Add Qt3 development HEAD version

1 files changed, 1859 insertions, 0 deletions

diff --git a/src/kernel/qdnd_x11.cpp b/src/kernel/qdnd_x11.cpp
new file mode 100644
index 0000000..607a358
--- /dev/null
+++ b/src/kernel/qdnd_x11.cpp
@@ -0,0 +1,1859 @@
+/****************************************************************************
+**
+** XDND implementation for Qt.  See http://www.cco.caltech.edu/~jafl/xdnd/
+**
+** Created : 980320
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the kernel module of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.QPL
+** included in the packaging of this file.  Licensees holding valid Qt
+** Commercial licenses may use this file in accordance with the Qt
+** Commercial License Agreement provided with the Software.
+**
+** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
+** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "qplatformdefs.h"
+
+#include "qapplication.h"
+
+#ifndef QT_NO_DRAGANDDROP
+
+#include "qwidget.h"
+#include "qintdict.h"
+#include "qdatetime.h"
+#include "qdict.h"
+#include "qguardedptr.h"
+#include "qdragobject.h"
+#include "qobjectlist.h"
+#include "qcursor.h"
+#include "qbitmap.h"
+#include "qpainter.h"
+
+#include "qt_x11_p.h"
+
+// conflict resolution
+
+const int XKeyPress = KeyPress;
+const int XKeyRelease = KeyRelease;
+#undef KeyPress
+#undef KeyRelease
+
+// this stuff is copied from qapp_x11.cpp
+
+extern void qt_x11_intern_atom( const char *, Atom * );
+
+#if defined(Q_C_CALLBACKS)
+extern "C" {
+#endif
+
+extern void qt_ignore_badwindow();
+extern bool qt_badwindow();
+extern void qt_enter_modal( QWidget *widget );
+extern void qt_leave_modal( QWidget *widget );
+
+#if defined(Q_C_CALLBACKS)
+}
+#endif
+
+extern Window qt_x11_findClientWindow( Window, Atom, bool );
+extern Atom qt_wm_state;
+extern Time qt_x_time;
+extern Time qt_x_user_time;
+
+// this stuff is copied from qclb_x11.cpp
+
+extern bool qt_xclb_wait_for_event( Display *dpy, Window win, int type,
+				    XEvent *event, int timeout );
+extern bool qt_xclb_read_property( Display *dpy, Window win, Atom property,
+				   bool deleteProperty,
+				   QByteArray *buffer, int *size, Atom *type,
+				   int *format, bool nullterm );
+extern QByteArray qt_xclb_read_incremental_property( Display *dpy, Window win,
+						     Atom property,
+						     int nbytes, bool nullterm );
+// and all this stuff is copied -into- qapp_x11.cpp
+
+void qt_xdnd_setup();
+void qt_handle_xdnd_enter( QWidget *, const XEvent *, bool );
+void qt_handle_xdnd_position( QWidget *, const XEvent *, bool );
+void qt_handle_xdnd_status( QWidget *, const XEvent *, bool );
+void qt_handle_xdnd_leave( QWidget *, const XEvent *, bool );
+void qt_handle_xdnd_drop( QWidget *, const XEvent *, bool );
+void qt_handle_xdnd_finished( QWidget *, const XEvent *, bool );
+void qt_xdnd_handle_selection_request( const XSelectionRequestEvent * );
+bool qt_xdnd_handle_badwindow();
+// client messages
+Atom qt_xdnd_enter;
+Atom qt_xdnd_position;
+Atom qt_xdnd_status;
+Atom qt_xdnd_leave;
+Atom qt_xdnd_drop;
+Atom qt_xdnd_finished;
+Atom qt_xdnd_type_list;
+const int qt_xdnd_version = 4;
+
+extern int qt_x11_translateButtonState( int s );
+
+// Actions
+//
+// The Xdnd spec allows for user-defined actions. This could be implemented
+// with a registration process in Qt. WE SHOULD do that later.
+//
+Atom qt_xdnd_action_copy;
+Atom qt_xdnd_action_link;
+Atom qt_xdnd_action_move;
+Atom qt_xdnd_action_private;
+static
+QDropEvent::Action xdndaction_to_qtaction(Atom atom)
+{
+    if ( atom == qt_xdnd_action_copy || atom == 0 )
+	return QDropEvent::Copy;
+    if ( atom == qt_xdnd_action_link )
+	return QDropEvent::Link;
+    if ( atom == qt_xdnd_action_move )
+	return QDropEvent::Move;
+    return QDropEvent::Private;
+}
+static
+int qtaction_to_xdndaction(QDropEvent::Action a)
+{
+    switch ( a ) {
+      case QDropEvent::Copy:
+	return qt_xdnd_action_copy;
+      case QDropEvent::Link:
+	return qt_xdnd_action_link;
+      case QDropEvent::Move:
+	return qt_xdnd_action_move;
+      case QDropEvent::Private:
+	return qt_xdnd_action_private;
+      default:
+	return qt_xdnd_action_copy;
+    }
+}
+
+// clean up the stuff used.
+static void qt_xdnd_cleanup();
+
+static void qt_xdnd_send_leave();
+
+// XDND selection
+Atom qt_xdnd_selection;
+// other selection
+static Atom qt_selection_property;
+// INCR
+static Atom qt_incr_atom;
+
+// properties for XDND drop sites
+Atom qt_xdnd_aware;
+Atom qt_xdnd_proxy;
+
+// real variables:
+// xid of current drag source
+static Atom qt_xdnd_dragsource_xid = 0;
+
+// the types in this drop. 100 is no good, but at least it's big.
+const int qt_xdnd_max_type = 100;
+static Atom qt_xdnd_types[qt_xdnd_max_type];
+
+static QIntDict<QCString> * qt_xdnd_drag_types = 0;
+static QDict<Atom> * qt_xdnd_atom_numbers = 0;
+
+// timer used when target wants "continuous" move messages (eg. scroll)
+static int heartbeat = -1;
+// rectangle in which the answer will be the same
+static QRect qt_xdnd_source_sameanswer;
+//static QRect qt_xdnd_target_sameanswer;
+static bool qt_xdnd_target_answerwas;
+// top-level window we sent position to last.
+static Window qt_xdnd_current_target;
+// window to send events to (always valid if qt_xdnd_current_target)
+static Window qt_xdnd_current_proxy_target;
+// widget we forwarded position to last, and local position
+static QGuardedPtr<QWidget> qt_xdnd_current_widget;
+static QPoint qt_xdnd_current_position;
+// time of this drop, as type Atom to save on casts
+static Atom qt_xdnd_source_current_time;
+// timestamp from the XdndPosition and XdndDrop
+static Time qt_xdnd_target_current_time;
+// screen number containing the pointer... -1 means default
+static int qt_xdnd_current_screen = -1;
+// state of dragging... true if dragging, false if not
+bool qt_xdnd_dragging = FALSE;
+// need to check state of keyboard modifiers
+static bool need_modifiers_check = FALSE;
+
+// dict of payload data, sorted by type atom
+static QIntDict<QByteArray> * qt_xdnd_target_data = 0;
+
+// first drag object, or 0
+static QDragObject * qt_xdnd_source_object = 0;
+
+// Motif dnd
+extern void qt_motifdnd_enable( QWidget *, bool );
+extern QByteArray qt_motifdnd_obtain_data( const char *format );
+extern const char *qt_motifdnd_format( int n );
+
+bool qt_motifdnd_active = FALSE;
+static bool dndCancelled = FALSE;
+
+// Shift/Ctrl handling, and final drop status
+static QDragObject::DragMode drag_mode;
+static QDropEvent::Action global_requested_action = QDropEvent::Copy;
+static QDropEvent::Action global_accepted_action = QDropEvent::Copy;
+
+// for embedding only
+static QWidget* current_embedding_widget  = 0;
+static XEvent last_enter_event;
+
+// cursors
+static QCursor *noDropCursor = 0;
+static QCursor *moveCursor = 0;
+static QCursor *copyCursor = 0;
+static QCursor *linkCursor = 0;
+
+static QPixmap *defaultPm = 0;
+
+static const int default_pm_hotx = -2;
+static const int default_pm_hoty = -16;
+static const char* const default_pm[] = {
+"13 9 3 1",
+".      c None",
+"       c #000000",
+"X      c #FFFFFF",
+"X X X X X X X",
+" X X X X X X ",
+"X ......... X",
+" X.........X ",
+"X ......... X",
+" X.........X ",
+"X ......... X",
+" X X X X X X ",
+"X X X X X X X"
+};
+
+class QShapedPixmapWidget : public QWidget {
+
+public:
+    QShapedPixmapWidget(int screen = -1) :
+	QWidget(QApplication::desktop()->screen( screen ),
+		0, WStyle_Customize | WStyle_Tool | WStyle_NoBorder | WX11BypassWM ), oldpmser( 0 ), oldbmser( 0 )
+    {
+    x11SetWindowType( X11WindowTypeDND );
+    }
+
+    void setPixmap(QPixmap pm, QPoint hot)
+    {
+	int bmser = pm.mask() ? pm.mask()->serialNumber() : 0;
+	if( oldpmser == pm.serialNumber() && oldbmser == bmser
+	    && oldhot == hot )
+	    return;
+	oldpmser = pm.serialNumber();
+	oldbmser = bmser;
+	oldhot = hot;
+	bool hotspot_in = !(hot.x() < 0 || hot.y() < 0 || hot.x() >= pm.width() || hot.y() >= pm.height());
+// if the pixmap has hotspot in its area, make a "hole" in it at that position
+// this will allow XTranslateCoordinates() to find directly the window below the cursor instead
+// of finding this pixmap, and therefore there won't be needed any (slow) search for the window
+// using findRealWindow()
+	if( hotspot_in ) {
+	    QBitmap mask = pm.mask() ? *pm.mask() : QBitmap( pm.width(), pm.height());
+	    if( !pm.mask())
+		mask.fill( Qt::color1 );
+	    QPainter p( &mask );
+	    p.setPen( Qt::color0 );
+	    p.drawPoint( hot.x(), hot.y());
+	    p.end();
+    	    pm.setMask( mask );
+    	    setMask( mask );
+	} else if ( pm.mask() ) {
+	    setMask( *pm.mask() );
+	} else {
+	    clearMask();
+	}
+	resize(pm.width(),pm.height());
+	setErasePixmap(pm);
+	erase();
+    }
+private:
+    int oldpmser;
+    int oldbmser;
+    QPoint oldhot;
+};
+
+static QShapedPixmapWidget * qt_xdnd_deco = 0;
+
+static QWidget* desktop_proxy = 0;
+
+class QExtraWidget : public QWidget
+{
+public:
+    QWExtra* extraData() { return QWidget::extraData(); }
+    QTLWExtra* topData() { return QWidget::topData(); }
+};
+
+
+static bool qt_xdnd_enable( QWidget* w, bool on )
+{
+    if ( on ) {
+	QWidget * xdnd_widget = 0;
+	if ( w->isDesktop() ) {
+	    if ( desktop_proxy ) // *WE* already have one.
+		return FALSE;
+
+	    // As per Xdnd4, use XdndProxy
+	    XGrabServer( w->x11Display() );
+	    Atom type = None;
+	    int f;
+	    unsigned long n, a;
+	    WId *proxy_id_ptr;
+	    XGetWindowProperty( w->x11Display(), w->winId(),
+		qt_xdnd_proxy, 0, 1, False,
+		XA_WINDOW, &type, &f,&n,&a,(uchar**)&proxy_id_ptr );
+	    WId proxy_id = 0;
+	    if ( type == XA_WINDOW && proxy_id_ptr ) {
+		proxy_id = *proxy_id_ptr;
+		XFree(proxy_id_ptr);
+		proxy_id_ptr = 0;
+		// Already exists. Real?
+		qt_ignore_badwindow();
+		XGetWindowProperty( w->x11Display(), proxy_id,
+		    qt_xdnd_proxy, 0, 1, False,
+		    XA_WINDOW, &type, &f,&n,&a,(uchar**)&proxy_id_ptr );
+		if ( qt_badwindow() || type != XA_WINDOW || !proxy_id_ptr || *proxy_id_ptr != proxy_id ) {
+		    // Bogus - we will overwrite.
+		    proxy_id = 0;
+		}
+	    }
+	    if ( proxy_id_ptr )
+		XFree(proxy_id_ptr);
+
+	    if ( !proxy_id ) {
+		xdnd_widget = desktop_proxy = new QWidget;
+		proxy_id = desktop_proxy->winId();
+		XChangeProperty ( w->x11Display(),
+		    w->winId(), qt_xdnd_proxy,
+		    XA_WINDOW, 32, PropModeReplace,
+		    (unsigned char *)&proxy_id, 1 );
+		XChangeProperty ( w->x11Display(),
+		    proxy_id, qt_xdnd_proxy,
+		    XA_WINDOW, 32, PropModeReplace,
+		    (unsigned char *)&proxy_id, 1 );
+	    }
+
+	    XUngrabServer( w->x11Display() );
+	} else {
+	    xdnd_widget = w->topLevelWidget();
+	}
+	if ( xdnd_widget ) {
+	    Atom atm = (Atom)qt_xdnd_version;
+	    XChangeProperty ( xdnd_widget->x11Display(), xdnd_widget->winId(),
+			      qt_xdnd_aware, XA_ATOM, 32, PropModeReplace,
+			      (unsigned char *)&atm, 1 );
+	    return TRUE;
+	} else {
+	    return FALSE;
+	}
+    } else {
+	if ( w->isDesktop() ) {
+	    XDeleteProperty( w->x11Display(), w->winId(),
+			     qt_xdnd_proxy );
+	    delete desktop_proxy;
+	    desktop_proxy = 0;
+	}
+	return TRUE;
+    }
+}
+
+const char* qt_xdnd_atom_to_str( Atom a )
+{
+    if ( !a ) return 0;
+
+    if ( a == XA_STRING )
+	return "text/plain"; // some Xdnd clients are dumb
+
+    if ( !qt_xdnd_drag_types ) {
+	qt_xdnd_drag_types = new QIntDict<QCString>( 17 );
+	qt_xdnd_drag_types->setAutoDelete( TRUE );
+    }
+    QCString* result;
+    if ( !(result=qt_xdnd_drag_types->find( a )) ) {
+	const char* mimeType = XGetAtomName( QPaintDevice::x11AppDisplay(), a );
+	if ( !mimeType )
+	    return 0; // only happens on protocol error
+	result = new QCString( mimeType );
+	qt_xdnd_drag_types->insert( (long)a, result );
+	XFree((void*)mimeType);
+    }
+    return *result;
+}
+
+Atom* qt_xdnd_str_to_atom( const char *mimeType )
+{
+    if ( !mimeType || !*mimeType )
+	return 0;
+    if ( !qt_xdnd_atom_numbers ) {
+	qt_xdnd_atom_numbers = new QDict<Atom>( 17 );
+	qt_xdnd_atom_numbers->setAutoDelete( TRUE );
+    }
+
+    Atom * result;
+    if ( (result = qt_xdnd_atom_numbers->find( mimeType )) )
+	return result;
+
+    result = new Atom;
+    *result = 0;
+    qt_x11_intern_atom( mimeType, result );
+    qt_xdnd_atom_numbers->insert( mimeType, result );
+    qt_xdnd_atom_to_str( *result );
+
+    return result;
+}
+
+
+void qt_xdnd_setup() {
+    // set up protocol atoms
+    qt_x11_intern_atom( "XdndEnter", &qt_xdnd_enter );
+    qt_x11_intern_atom( "XdndPosition", &qt_xdnd_position );
+    qt_x11_intern_atom( "XdndStatus", &qt_xdnd_status );
+    qt_x11_intern_atom( "XdndLeave", &qt_xdnd_leave );
+    qt_x11_intern_atom( "XdndDrop", &qt_xdnd_drop );
+    qt_x11_intern_atom( "XdndFinished", &qt_xdnd_finished );
+    qt_x11_intern_atom( "XdndTypeList", &qt_xdnd_type_list );
+
+    qt_x11_intern_atom( "XdndSelection", &qt_xdnd_selection );
+
+    qt_x11_intern_atom( "XdndAware", &qt_xdnd_aware );
+    qt_x11_intern_atom( "XdndProxy", &qt_xdnd_proxy );
+
+
+    qt_x11_intern_atom( "XdndActionCopy", &qt_xdnd_action_copy );
+    qt_x11_intern_atom( "XdndActionLink", &qt_xdnd_action_link );
+    qt_x11_intern_atom( "XdndActionMove", &qt_xdnd_action_move );
+    qt_x11_intern_atom( "XdndActionPrivate", &qt_xdnd_action_private );
+
+    qt_x11_intern_atom( "QT_SELECTION", &qt_selection_property );
+    qt_x11_intern_atom( "INCR", &qt_incr_atom );
+
+    qAddPostRoutine( qt_xdnd_cleanup );
+}
+
+
+void qt_xdnd_cleanup()
+{
+    delete qt_xdnd_drag_types;
+    qt_xdnd_drag_types = 0;
+    delete qt_xdnd_atom_numbers;
+    qt_xdnd_atom_numbers = 0;
+    delete qt_xdnd_target_data;
+    qt_xdnd_target_data = 0;
+    delete noDropCursor;
+    noDropCursor = 0;
+    delete copyCursor;
+    copyCursor = 0;
+    delete moveCursor;
+    moveCursor = 0;
+    delete linkCursor;
+    linkCursor = 0;
+    delete defaultPm;
+    defaultPm = 0;
+    delete desktop_proxy;
+    desktop_proxy = 0;
+}
+
+
+static QWidget * find_child( QWidget * tlw, QPoint & p )
+{
+    QWidget * w = tlw;
+
+    p = w->mapFromGlobal( p );
+    bool done = FALSE;
+    while ( !done ) {
+	done = TRUE;
+	if ( ((QExtraWidget*)w)->extraData() &&
+	     ((QExtraWidget*)w)->extraData()->xDndProxy != 0 )
+	    break; // stop searching for widgets under the mouse cursor if found widget is a proxy.
+	if ( w->children() ) {
+	    QObjectListIt it( *w->children() );
+	    it.toLast();
+	    QObject * o;
+	    while( (o=it.current()) ) {
+		--it;
+		if ( o->isWidgetType() &&
+		     ((QWidget*)o)->isVisible() &&
+		     ((QWidget*)o)->geometry().contains( p ) &&
+		     !((QWidget*)o)->isTopLevel()) {
+		    w = (QWidget *)o;
+		    done = FALSE;
+		    p = w->mapFromParent( p );
+		    break;
+		}
+	    }
+	}
+    }
+    return w;
+}
+
+
+static bool checkEmbedded(QWidget* w, const XEvent* xe)
+{
+    if (!w)
+	return FALSE;
+
+    if (current_embedding_widget != 0 && current_embedding_widget != w) {
+	qt_xdnd_current_target = ((QExtraWidget*)current_embedding_widget)->extraData()->xDndProxy;
+	qt_xdnd_current_proxy_target = qt_xdnd_current_target;
+	qt_xdnd_send_leave();
+	qt_xdnd_current_target = 0;
+	qt_xdnd_current_proxy_target = 0;
+	current_embedding_widget = 0;
+    }
+
+    QWExtra* extra = ((QExtraWidget*)w)->extraData();
+    if ( extra && extra->xDndProxy != 0 ) {
+
+	if (current_embedding_widget != w) {
+
+	    last_enter_event.xany.window = extra->xDndProxy;
+	    XSendEvent( QPaintDevice::x11AppDisplay(), extra->xDndProxy, False, NoEventMask,
+			&last_enter_event );
+	    current_embedding_widget = w;
+	}
+
+	((XEvent*)xe)->xany.window = extra->xDndProxy;
+	XSendEvent( QPaintDevice::x11AppDisplay(), extra->xDndProxy, False, NoEventMask,
+		    (XEvent*)xe );
+	qt_xdnd_current_widget = w;
+	return TRUE;
+    }
+    current_embedding_widget = 0;
+    return FALSE;
+}
+
+void qt_handle_xdnd_enter( QWidget *, const XEvent * xe, bool /*passive*/ )
+{
+    //if ( !w->neveHadAChildWithDropEventsOn() )
+	//return; // haven't been set up for dnd
+
+    qt_motifdnd_active = FALSE;
+
+    last_enter_event.xclient = xe->xclient;
+
+    qt_xdnd_target_answerwas = FALSE;
+
+    const long *l = xe->xclient.data.l;
+    int version = (int)(((unsigned long)(l[1])) >> 24);
+
+    if ( version > qt_xdnd_version )
+	return;
+
+    qt_xdnd_dragsource_xid = l[0];
+
+    int j = 0;
+    if ( l[1] & 1 ) {
+	// get the types from XdndTypeList
+	Atom   type = None;
+	int f;
+	unsigned long n, a;
+	Atom *data;
+	XGetWindowProperty( QPaintDevice::x11AppDisplay(), qt_xdnd_dragsource_xid,
+		    qt_xdnd_type_list, 0,
+		    qt_xdnd_max_type, False, XA_ATOM, &type, &f,&n,&a,(uchar**)&data );
+	for ( ; j<qt_xdnd_max_type && j < (int)n; j++ ) {
+	    qt_xdnd_types[j] = data[j];
+	}
+	if ( data )
+	    XFree( (uchar*)data );
+    } else {
+	// get the types from the message
+	int i;
+	for( i=2; i < 5; i++ ) {
+	    qt_xdnd_types[j++] = l[i];
+	}
+    }
+    qt_xdnd_types[j] = 0;
+}
+
+
+
+void qt_handle_xdnd_position( QWidget *w, const XEvent * xe, bool passive )
+{
+    const unsigned long *l = (const unsigned long *)xe->xclient.data.l;
+
+    QPoint p( (l[2] & 0xffff0000) >> 16, l[2] & 0x0000ffff );
+    QWidget * c = find_child( w, p ); // changes p to to c-local coordinates
+
+    if (!passive && checkEmbedded(c, xe))
+	return;
+
+    if ( !c || !c->acceptDrops() && c->isDesktop() ) {
+	return;
+    }
+
+    if ( l[0] != qt_xdnd_dragsource_xid ) {
+	//qDebug( "xdnd drag position from unexpected source (%08lx not %08lx)",
+	//     l[0], qt_xdnd_dragsource_xid );
+	return;
+    }
+
+    if (l[3] != 0) {
+        // timestamp from the source
+        qt_xdnd_target_current_time = qt_x_user_time = l[3];
+    }
+
+    XClientMessageEvent response;
+    response.type = ClientMessage;
+    response.window = qt_xdnd_dragsource_xid;
+    response.format = 32;
+    response.message_type = qt_xdnd_status;
+    response.data.l[0] = w->winId();
+    response.data.l[1] = 0; // flags
+    response.data.l[2] = 0; // x, y
+    response.data.l[3] = 0; // w, h
+    response.data.l[4] = 0; // action
+
+    if ( !passive ) { // otherwise just reject
+	while ( c && !c->acceptDrops() && !c->isTopLevel() ) {
+	    p = c->mapToParent( p );
+	    c = c->parentWidget();
+	}
+
+	QRect answerRect( c->mapToGlobal( p ), QSize( 1,1 ) );
+
+	QDragMoveEvent me( p );
+	QDropEvent::Action accepted_action = xdndaction_to_qtaction(l[4]);
+	me.setAction(accepted_action);
+
+	if ( c != qt_xdnd_current_widget ) {
+	    qt_xdnd_target_answerwas = FALSE;
+	    if ( qt_xdnd_current_widget ) {
+		QDragLeaveEvent e;
+		QApplication::sendEvent( qt_xdnd_current_widget, &e );
+	    }
+	    if ( c->acceptDrops() ) {
+		qt_xdnd_current_widget = c;
+		qt_xdnd_current_position = p;
+
+		QDragEnterEvent de( p );
+		de.setAction(accepted_action);
+		QApplication::sendEvent( c, &de );
+		if ( de.isAccepted() ) {
+		    me.accept( de.answerRect() );
+		    if ( !de.isActionAccepted() ) // only as a copy (move if we del)
+			accepted_action = QDropEvent::Copy;
+		    else
+			me.acceptAction(TRUE);
+		} else {
+		    me.ignore( de.answerRect() );
+		}
+	    }
+	} else {
+	    if ( qt_xdnd_target_answerwas ) {
+		me.accept();
+		me.acceptAction(global_requested_action == global_accepted_action);
+	    }
+	}
+
+	if ( !c->acceptDrops() ) {
+	    qt_xdnd_current_widget = 0;
+	    answerRect = QRect( p, QSize( 1, 1 ) );
+	} else if ( xdndaction_to_qtaction(l[4]) < QDropEvent::Private ) {
+	    qt_xdnd_current_widget = c;
+	    qt_xdnd_current_position = p;
+
+	    QApplication::sendEvent( c, &me );
+	    qt_xdnd_target_answerwas = me.isAccepted();
+	    if ( me.isAccepted() ) {
+		response.data.l[1] = 1; // yes
+		if ( !me.isActionAccepted() ) // only as a copy (move if we del)
+		    accepted_action = QDropEvent::Copy;
+	    } else {
+		response.data.l[0] = 0;
+	    }
+	    answerRect = me.answerRect().intersect( c->rect() );
+	} else {
+	    response.data.l[0] = 0;
+	    answerRect = QRect( p, QSize( 1, 1 ) );
+	}
+	answerRect = QRect( c->mapToGlobal( answerRect.topLeft() ),
+			    answerRect.size() );
+
+	if ( answerRect.left() < 0 )
+	    answerRect.setLeft( 0 );
+	if ( answerRect.right() > 4096 )
+	    answerRect.setRight( 4096 );
+	if ( answerRect.top() < 0 )
+	    answerRect.setTop( 0 );
+	if ( answerRect.bottom() > 4096 )
+	    answerRect.setBottom( 4096 );
+	if ( answerRect.width() < 0 )
+	    answerRect.setWidth( 0 );
+	if ( answerRect.height() < 0 )
+	    answerRect.setHeight( 0 );
+
+	response.data.l[2] = (answerRect.x() << 16) + answerRect.y();
+	response.data.l[3] = (answerRect.width() << 16) + answerRect.height();
+	response.data.l[4] = qtaction_to_xdndaction(accepted_action);
+	global_accepted_action = accepted_action;
+    }
+
+    // reset
+    qt_xdnd_target_current_time = CurrentTime;
+
+    QWidget * source = QWidget::find( qt_xdnd_dragsource_xid );
+
+    if ( source && source->isDesktop() && !source->acceptDrops() )
+	source = 0;
+
+    if ( source )
+	qt_handle_xdnd_status( source, (const XEvent *)&response, passive );
+    else
+	XSendEvent( QPaintDevice::x11AppDisplay(), qt_xdnd_dragsource_xid, False,
+		    NoEventMask, (XEvent*)&response );
+}
+
+
+void qt_handle_xdnd_status( QWidget * w, const XEvent * xe, bool /*passive*/ )
+{
+    const unsigned long *l = (const unsigned long *)xe->xclient.data.l;
+    // Messy:  QDragResponseEvent is just a call to QDragManager function
+    global_accepted_action = xdndaction_to_qtaction(l[4]);
+    QDragResponseEvent e( (int)(l[1] & 1) );
+    QApplication::sendEvent( w, &e );
+
+    if ( (int)(l[1] & 2) == 0 ) {
+	QPoint p( (l[2] & 0xffff0000) >> 16, l[2] & 0x0000ffff );
+	QSize s( (l[3] & 0xffff0000) >> 16, l[3] & 0x0000ffff );
+	qt_xdnd_source_sameanswer = QRect( p, s );
+	if ( qt_xdnd_source_sameanswer.isNull() ) {
+	    // Application wants "coninutous" move events
+	}
+    } else {
+	qt_xdnd_source_sameanswer = QRect();
+    }
+}
+
+
+void qt_handle_xdnd_leave( QWidget *w, const XEvent * xe, bool /*passive*/ )
+{
+    //qDebug( "xdnd leave" );
+    if ( !qt_xdnd_current_widget ||
+	 w->topLevelWidget() != qt_xdnd_current_widget->topLevelWidget() ) {
+	return; // sanity
+    }
+
+    if (checkEmbedded(current_embedding_widget, xe)) {
+	current_embedding_widget = 0;
+	qt_xdnd_current_widget = 0;
+	return;
+    }
+
+    const unsigned long *l = (const unsigned long *)xe->xclient.data.l;
+
+    QDragLeaveEvent e;
+    QApplication::sendEvent( qt_xdnd_current_widget, &e );
+
+    if ( l[0] != qt_xdnd_dragsource_xid ) {
+	// This often happens - leave other-process window quickly
+	//qDebug( "xdnd drag leave from unexpected source (%08lx not %08lx",
+	       //l[0], qt_xdnd_dragsource_xid );
+	qt_xdnd_current_widget = 0;
+	return;
+    }
+
+    qt_xdnd_dragsource_xid = 0;
+    qt_xdnd_types[0] = 0;
+    qt_xdnd_current_widget = 0;
+}
+
+
+void qt_xdnd_send_leave()
+{
+    if ( !qt_xdnd_current_target )
+	return;
+
+    XClientMessageEvent leave;
+    leave.type = ClientMessage;
+    leave.window = qt_xdnd_current_target;
+    leave.format = 32;
+    leave.message_type = qt_xdnd_leave;
+    leave.data.l[0] = qt_xdnd_dragsource_xid;
+    leave.data.l[1] = 0; // flags
+    leave.data.l[2] = 0; // x, y
+    leave.data.l[3] = 0; // w, h
+    leave.data.l[4] = 0; // just null
+
+    QWidget * w = QWidget::find( qt_xdnd_current_proxy_target );
+
+    if ( w && w->isDesktop() && !w->acceptDrops() )
+	w = 0;
+
+    if ( w )
+	qt_handle_xdnd_leave( w, (const XEvent *)&leave, FALSE );
+    else
+	XSendEvent( QPaintDevice::x11AppDisplay(), qt_xdnd_current_proxy_target, False,
+		    NoEventMask, (XEvent*)&leave );
+    qt_xdnd_current_target = 0;
+    qt_xdnd_current_proxy_target = 0;
+}
+
+
+
+void qt_handle_xdnd_drop( QWidget *, const XEvent * xe, bool passive )
+{
+    if ( !qt_xdnd_current_widget ) {
+	qt_xdnd_dragsource_xid = 0;
+	return; // sanity
+    }
+
+    if (!passive && checkEmbedded(qt_xdnd_current_widget, xe)){
+	current_embedding_widget = 0;
+	qt_xdnd_dragsource_xid = 0;
+	qt_xdnd_current_widget = 0;
+	return;
+    }
+    const unsigned long *l = (const unsigned long *)xe->xclient.data.l;
+
+    //qDebug( "xdnd drop" );
+
+    if ( l[0] != qt_xdnd_dragsource_xid ) {
+	//qDebug( "xdnd drop from unexpected source (%08lx not %08lx",
+	//       l[0], qt_xdnd_dragsource_xid );
+	return;
+    }
+
+    if (l[2] != 0) {
+        // update the "user time" from the timestamp in the event.
+        qt_xdnd_target_current_time = qt_x_user_time = l[2];
+    }
+
+    if ( qt_xdnd_source_object )
+	qt_xdnd_source_object->setTarget( qt_xdnd_current_widget );
+
+    if ( !passive ) {
+	QDropEvent de( qt_xdnd_current_position );
+	de.setAction( global_accepted_action );
+	QApplication::sendEvent( qt_xdnd_current_widget, &de );
+	if ( !de.isAccepted() ) {
+	    // Ignore a failed drag
+	    global_accepted_action = QDropEvent::Copy;
+	    dndCancelled = TRUE;
+	}
+	XClientMessageEvent finished;
+	finished.type = ClientMessage;
+	finished.window = qt_xdnd_dragsource_xid;
+	finished.format = 32;
+	finished.message_type = qt_xdnd_finished;
+	finished.data.l[0] = qt_xdnd_current_widget?qt_xdnd_current_widget->topLevelWidget()->winId():0;
+	finished.data.l[1] = 0; // flags
+	XSendEvent( QPaintDevice::x11AppDisplay(), qt_xdnd_dragsource_xid, False,
+		    NoEventMask, (XEvent*)&finished );
+    } else {
+	QDragLeaveEvent e;
+	QApplication::sendEvent( qt_xdnd_current_widget, &e );
+    }
+    qt_xdnd_dragsource_xid = 0;
+    qt_xdnd_current_widget = 0;
+
+    // reset
+    qt_xdnd_target_current_time = CurrentTime;
+}
+
+
+void qt_handle_xdnd_finished( QWidget *, const XEvent * xe, bool passive )
+{
+    const unsigned long *l = (const unsigned long *)xe->xclient.data.l;
+
+    if ( l[0] && (l[0] == qt_xdnd_current_target
+	    || l[0] == qt_xdnd_current_proxy_target) ) {
+	//
+	if ( !passive )
+	    (void ) checkEmbedded( qt_xdnd_current_widget, xe);
+	current_embedding_widget = 0;
+	qt_xdnd_current_target = 0;
+	qt_xdnd_current_proxy_target = 0;
+	delete qt_xdnd_source_object;
+	qt_xdnd_source_object = 0;
+    }
+}
+
+
+void QDragManager::timerEvent( QTimerEvent* e )
+{
+    if ( e->timerId() == heartbeat ) {
+        if( need_modifiers_check ) {
+            Window root, child;
+            int root_x, root_y, win_x, win_y;
+            unsigned int mask;
+            XQueryPointer( qt_xdisplay(), qt_xrootwin( qt_xdnd_current_screen ),
+                &root, &child, &root_x, &root_y, &win_x, &win_y, &mask );
+            if( updateMode( (ButtonState)qt_x11_translateButtonState( mask )))
+                qt_xdnd_source_sameanswer = QRect(); // force move
+        }
+        need_modifiers_check = TRUE;
+        if( qt_xdnd_source_sameanswer.isNull() )
+	    move( QCursor::pos() );
+    }
+}
+
+static bool qt_xdnd_was_move = false;
+static bool qt_xdnd_found = false;
+// check whole incoming X queue for move events
+// checking whole queue is done by always returning False in the predicate
+// if there's another move event in the queue, and there's not a mouse button
+// or keyboard or ClientMessage event before it, the current move event
+// may be safely discarded
+// this helps avoiding being overloaded by being flooded from many events
+// from the XServer
+static
+Bool qt_xdnd_predicate( Display*, XEvent* ev, XPointer )
+{
+    if( qt_xdnd_found )
+	return False;
+    if( ev->type == MotionNotify )
+    {
+	qt_xdnd_was_move = true;
+	qt_xdnd_found = true;
+    }
+    if( ev->type == ButtonPress || ev->type == ButtonRelease
+	|| ev->type == XKeyPress || ev->type == XKeyRelease
+	|| ev->type == ClientMessage )
+    {
+	qt_xdnd_was_move = false;
+	qt_xdnd_found = true;
+    }
+    return False;
+}
+
+static
+bool qt_xdnd_another_movement()
+{
+    qt_xdnd_was_move = false;
+    qt_xdnd_found = false;
+    XEvent dummy;
+    XCheckIfEvent( qt_xdisplay(), &dummy, qt_xdnd_predicate, NULL );
+    return qt_xdnd_was_move;
+}
+
+bool QDragManager::eventFilter( QObject * o, QEvent * e)
+{
+    if ( beingCancelled ) {
+	if ( e->type() == QEvent::KeyRelease &&
+	     ((QKeyEvent*)e)->key() == Key_Escape ) {
+	    qApp->removeEventFilter( this );
+	    object = 0;
+	    dragSource = 0;
+	    beingCancelled = FALSE;
+	    qApp->exit_loop();
+	    return TRUE; // block the key release
+	}
+	return FALSE;
+    }
+
+    Q_ASSERT( object != 0 );
+
+    if ( !o->isWidgetType() )
+	return FALSE;
+
+    if ( e->type() == QEvent::MouseMove ) {
+	QMouseEvent* me = (QMouseEvent *)e;
+	if( !qt_xdnd_another_movement()) {
+	    updateMode(me->stateAfter());
+	    move( me->globalPos() );
+	}
+        need_modifiers_check = FALSE;
+	return TRUE;
+    } else if ( e->type() == QEvent::MouseButtonRelease ) {
+	qApp->removeEventFilter( this );
+	if ( willDrop )
+	    drop();
+	else
+	    cancel();
+	object = 0;
+	dragSource = 0;
+	beingCancelled = FALSE;
+	qApp->exit_loop();
+	return TRUE;
+    } else if ( e->type() == QEvent::DragResponse ) {
+	if ( ((QDragResponseEvent *)e)->dragAccepted() ) {
+	    if ( !willDrop ) {
+		willDrop = TRUE;
+	    }
+	} else {
+	    if ( willDrop ) {
+		willDrop = FALSE;
+	    }
+	}
+	updateCursor();
+	return TRUE;
+    }
+
+    if ( e->type() == QEvent::KeyPress
+      || e->type() == QEvent::KeyRelease )
+    {
+	QKeyEvent *ke = ((QKeyEvent*)e);
+	if ( ke->key() == Key_Escape && e->type() == QEvent::KeyPress ) {
+	    cancel();
+	    qApp->removeEventFilter( this );
+	    object = 0;
+	    dragSource = 0;
+	    beingCancelled = FALSE;
+	    qApp->exit_loop();
+	} else {
+	    if( updateMode(ke->stateAfter())) {
+	        qt_xdnd_source_sameanswer = QRect(); // force move
+	        move( QCursor::pos() );
+            }
+            need_modifiers_check = FALSE;
+	}
+	return TRUE; // Eat all key events
+    }
+
+    // ### We bind modality to widgets, so we have to do this
+    // ###  "manually".
+    // DnD is modal - eat all other interactive events
+    switch ( e->type() ) {
+      case QEvent::MouseButtonPress:
+      case QEvent::MouseButtonRelease:
+      case QEvent::MouseButtonDblClick:
+      case QEvent::MouseMove:
+      case QEvent::KeyPress:
+      case QEvent::KeyRelease:
+      case QEvent::Wheel:
+      case QEvent::Accel:
+      case QEvent::AccelAvailable:
+      case QEvent::AccelOverride:
+	return TRUE;
+      default:
+	return FALSE;
+    }
+}
+
+
+static Qt::ButtonState oldstate;
+bool QDragManager::updateMode( ButtonState newstate )
+{
+    if ( newstate == oldstate )
+	return false;
+    const int both = ShiftButton|ControlButton;
+    if ( (newstate & both) == both ) {
+	global_requested_action = QDropEvent::Link;
+    } else {
+	bool local = qt_xdnd_source_object != 0;
+	if ( drag_mode == QDragObject::DragMove )
+	    global_requested_action = QDropEvent::Move;
+	else if ( drag_mode == QDragObject::DragCopy )
+	    global_requested_action = QDropEvent::Copy;
+	else if ( drag_mode == QDragObject::DragLink )
+	    global_requested_action = QDropEvent::Link;
+	else {
+	    if ( drag_mode == QDragObject::DragDefault && local )
+		global_requested_action = QDropEvent::Move;
+	    else
+		global_requested_action = QDropEvent::Copy;
+	    if ( newstate & ShiftButton )
+		global_requested_action = QDropEvent::Move;
+	    else if ( newstate & ControlButton )
+		global_requested_action = QDropEvent::Copy;
+	}
+    }
+    oldstate = newstate;
+    return true;
+}
+
+
+void QDragManager::createCursors()
+{
+    if ( !noDropCursor ) {
+	noDropCursor = new QCursor( ForbiddenCursor );
+	if ( !pm_cursor[0].isNull() )
+	    moveCursor = new QCursor(pm_cursor[0], 0,0);
+	if ( !pm_cursor[1].isNull() )
+	    copyCursor = new QCursor(pm_cursor[1], 0,0);
+	if ( !pm_cursor[2].isNull() )
+	    linkCursor = new QCursor(pm_cursor[2], 0,0);
+    }
+}
+
+void QDragManager::updateCursor()
+{
+    QCursor *c;
+    if ( willDrop ) {
+	if ( global_accepted_action == QDropEvent::Copy ) {
+	    if ( global_requested_action == QDropEvent::Move )
+		c = moveCursor; // (source can delete)
+	    else
+		c = copyCursor;
+	} else if ( global_accepted_action == QDropEvent::Link ) {
+	    c = linkCursor;
+	} else {
+	    c = moveCursor;
+	}
+	if ( qt_xdnd_deco ) {
+	    qt_xdnd_deco->show();
+	    qt_xdnd_deco->raise();
+	}
+    } else {
+	c = noDropCursor;
+	//if ( qt_xdnd_deco )
+	//    qt_xdnd_deco->hide();
+    }
+#ifndef QT_NO_CURSOR
+    if ( c )
+	qApp->setOverrideCursor( *c, TRUE );
+#endif
+}
+
+
+void QDragManager::cancel( bool deleteSource )
+{
+    killTimer( heartbeat );
+    heartbeat = -1;
+    if ( object ) {
+	beingCancelled = TRUE;
+	object = 0;
+    }
+
+    if ( qt_xdnd_current_target ) {
+	qt_xdnd_send_leave();
+    }
+
+#ifndef QT_NO_CURSOR
+    if ( restoreCursor ) {
+	QApplication::restoreOverrideCursor();
+	restoreCursor = FALSE;
+    }
+#endif
+
+    if ( deleteSource )
+	delete qt_xdnd_source_object;
+    qt_xdnd_source_object = 0;
+    delete qt_xdnd_deco;
+    qt_xdnd_deco = 0;
+
+    dndCancelled = TRUE;
+}
+
+static
+Window findRealWindow( const QPoint & pos, Window w, int md )
+{
+    if ( qt_xdnd_deco && w == qt_xdnd_deco->winId() )
+	return 0;
+
+    if ( md ) {
+        qt_ignore_badwindow();
+	XWindowAttributes attr;
+	XGetWindowAttributes( QPaintDevice::x11AppDisplay(), w, &attr );
+        if (qt_badwindow())
+            return 0;
+
+	if ( attr.map_state == IsViewable
+	    && QRect(attr.x,attr.y,attr.width,attr.height)
+             .contains(pos) )
+        {
+	    {
+		Atom   type = None;
+		int f;
+		unsigned long n, a;
+		unsigned char *data;
+
+		XGetWindowProperty( QPaintDevice::x11AppDisplay(), w, qt_xdnd_aware, 0,
+		    0, False, AnyPropertyType, &type, &f,&n,&a,&data );
+		if ( data ) XFree(data);
+		if ( type ) return w;
+	    }
+
+	    Window r, p;
+	    Window* c;
+	    uint nc;
+	    if ( XQueryTree( QPaintDevice::x11AppDisplay(), w, &r, &p, &c, &nc ) ) {
+		r=0;
+		for (uint i=nc; !r && i--; ) {
+		    r = findRealWindow( pos-QPoint(attr.x,attr.y),
+					c[i], md-1 );
+		}
+		XFree(c);
+		if ( r )
+		    return r;
+
+		// We didn't find a client window!  Just use the
+		// innermost window.
+	    }
+
+	    // No children!
+	    return w;
+	}
+    }
+    return 0;
+}
+
+void QDragManager::move( const QPoint & globalPos )
+{
+    if (!object) {
+        // perhaps the target crashed?
+        return;
+    }
+
+    int screen = QCursor::x11Screen();
+    if ( ( qt_xdnd_current_screen == -1 && screen != QPaintDevice::x11AppScreen() ) ||
+	 ( screen != qt_xdnd_current_screen ) ) {
+	// recreate the pixmap on the new screen...
+	delete qt_xdnd_deco;
+	qt_xdnd_deco = new QShapedPixmapWidget( screen );
+        qt_xdnd_deco->x11SetWindowTransient( dragSource->topLevelWidget());
+	if (!QWidget::mouseGrabber()) {
+	    updatePixmap();
+	    qt_xdnd_deco->grabMouse();
+	}
+    }
+    updatePixmap( globalPos );
+
+    if ( qt_xdnd_source_sameanswer.contains( globalPos ) &&
+	 qt_xdnd_source_sameanswer.isValid() ) {
+	return;
+    }
+
+    qt_xdnd_current_screen = screen;
+    Window rootwin = QPaintDevice::x11AppRootWindow( qt_xdnd_current_screen );
+    Window target = 0;
+    int lx = 0, ly = 0;
+    if ( !XTranslateCoordinates( QPaintDevice::x11AppDisplay(), rootwin, rootwin,
+				 globalPos.x(), globalPos.y(),
+				 &lx, &ly, &target) )
+	// some wierd error...
+	return;
+
+    if ( target == rootwin ) {
+	// Ok.
+    } else if ( target ) {
+	//me
+        Window src = rootwin;
+        while (target != 0) {
+            int lx2, ly2;
+            Window t;
+            // translate coordinates
+            if (!XTranslateCoordinates(QPaintDevice::x11AppDisplay(), src, target,
+                                       lx, ly, &lx2, &ly2, &t)) {
+                target = 0;
+                break;
+            }
+            lx = lx2;
+            ly = ly2;
+            src = target;
+
+	    // check if it has XdndAware
+	    Atom type = None;
+	    int f;
+	    unsigned long n, a;
+	    unsigned char *data = 0;
+	    XGetWindowProperty(QPaintDevice::x11AppDisplay(), target, qt_xdnd_aware, 0, 0, False,
+                               AnyPropertyType, &type, &f,&n,&a,&data);
+	    if (data)
+                XFree(data);
+	    if (type)
+                break;
+
+            // find child at the coordinates
+            if (!XTranslateCoordinates( QPaintDevice::x11AppDisplay(), src, src,
+                                        lx, ly, &lx2, &ly2, &target)) {
+                target = 0;
+                break;
+            }
+        }
+	if ( qt_xdnd_deco && (!target || target == qt_xdnd_deco->winId()) ) {
+	    target = findRealWindow(globalPos,rootwin,6);
+	}
+    }
+
+    QWidget* w;
+    if ( target ) {
+	w = QWidget::find( (WId)target );
+	if ( w && w->isDesktop() && !w->acceptDrops() )
+	    w = 0;
+    } else {
+	w = 0;
+	target = rootwin;
+    }
+
+    WId proxy_target = target;
+    int target_version = 1;
+
+    {
+	Atom   type = None;
+	int r, f;
+	unsigned long n, a;
+	WId *proxy_id;
+	qt_ignore_badwindow();
+	r = XGetWindowProperty( qt_xdisplay(), target, qt_xdnd_proxy, 0,
+				1, False, XA_WINDOW, &type, &f,&n,&a,(uchar**)&proxy_id );
+	if ( ( r != Success ) || qt_badwindow() ) {
+	    proxy_target = target = 0;
+	} else if ( type == XA_WINDOW && proxy_id ) {
+	    proxy_target = *proxy_id;
+	    XFree(proxy_id);
+	    proxy_id = 0;
+	    r = XGetWindowProperty( qt_xdisplay(), proxy_target, qt_xdnd_proxy, 0,
+				    1, False, XA_WINDOW, &type, &f,&n,&a,(uchar**)&proxy_id );
+	    if ( ( r != Success ) || qt_badwindow() || !type || !proxy_id || *proxy_id != proxy_target ) {
+		// Bogus
+		proxy_target = 0;
+		target = 0;
+	    }
+	    if ( proxy_id )
+		XFree(proxy_id);
+	}
+	if ( proxy_target ) {
+	    int *tv;
+	    qt_ignore_badwindow();
+	    r = XGetWindowProperty( qt_xdisplay(), proxy_target, qt_xdnd_aware, 0,
+				    1, False, AnyPropertyType, &type, &f,&n,&a,(uchar**)&tv );
+	    if ( r != Success ) {
+		target = 0;
+	    } else {
+		target_version = QMIN(qt_xdnd_version,tv ? *tv : 1);
+		if ( tv )
+		    XFree( tv );
+		if (!(!qt_badwindow() && type))
+		    target = 0;
+	    }
+	}
+    }
+
+    if ( target != qt_xdnd_current_target ) {
+	if ( qt_xdnd_current_target )
+	    qt_xdnd_send_leave();
+
+	qt_xdnd_current_target = target;
+	qt_xdnd_current_proxy_target = proxy_target;
+	if ( target ) {
+	    QMemArray<Atom> type;
+	    int flags = target_version << 24;
+	    const char* fmt;
+	    int nfmt=0;
+	    for (nfmt=0; (fmt=object->format(nfmt)); nfmt++) {
+		type.resize(nfmt+1);
+		type[nfmt] = *qt_xdnd_str_to_atom( fmt );
+	    }
+	    if ( nfmt >= 3 ) {
+		XChangeProperty( QPaintDevice::x11AppDisplay(),
+				 object->source()->winId(), qt_xdnd_type_list,
+				 XA_ATOM, 32, PropModeReplace,
+				 (unsigned char *)type.data(),
+				 type.size() );
+		flags |= 0x0001;
+	    }
+	    XClientMessageEvent enter;
+	    enter.type = ClientMessage;
+	    enter.window = target;
+	    enter.format = 32;
+	    enter.message_type = qt_xdnd_enter;
+	    enter.data.l[0] = object->source()->winId();
+	    enter.data.l[1] = flags;
+	    enter.data.l[2] = type.size()>0 ? type[0] : 0;
+	    enter.data.l[3] = type.size()>1 ? type[1] : 0;
+	    enter.data.l[4] = type.size()>2 ? type[2] : 0;
+	    // provisionally set the rectangle to 5x5 pixels...
+	    qt_xdnd_source_sameanswer = QRect( globalPos.x() - 2,
+					       globalPos.y() -2 , 5, 5 );
+
+	    if ( w ) {
+		qt_handle_xdnd_enter( w, (const XEvent *)&enter, FALSE );
+	    } else if ( target ) {
+		XSendEvent( QPaintDevice::x11AppDisplay(), proxy_target, False, NoEventMask,
+			    (XEvent*)&enter );
+	    }
+	}
+    }
+
+    if ( target ) {
+	XClientMessageEvent move;
+	move.type = ClientMessage;
+	move.window = target;
+	move.format = 32;
+	move.message_type = qt_xdnd_position;
+	move.window = target;
+	move.data.l[0] = object->source()->winId();
+	move.data.l[1] = 0; // flags
+	move.data.l[2] = (globalPos.x() << 16) + globalPos.y();
+	move.data.l[3] = qt_x_time;
+	move.data.l[4] = qtaction_to_xdndaction( global_requested_action );
+
+	if ( w )
+	    qt_handle_xdnd_position( w, (const XEvent *)&move, FALSE );
+	else
+	    XSendEvent( QPaintDevice::x11AppDisplay(), proxy_target, False, NoEventMask,
+			(XEvent*)&move );
+    } else {
+	if ( willDrop ) {
+	    willDrop = FALSE;
+	    updateCursor();
+	}
+    }
+}
+
+
+void QDragManager::drop()
+{
+    killTimer( heartbeat );
+    heartbeat = -1;
+    if ( !qt_xdnd_current_target )
+	return;
+
+    delete qt_xdnd_deco;
+    qt_xdnd_deco = 0;
+
+    XClientMessageEvent drop;
+    drop.type = ClientMessage;
+    drop.window = qt_xdnd_current_target;
+    drop.format = 32;
+    drop.message_type = qt_xdnd_drop;
+    drop.data.l[0] = object->source()->winId();
+    drop.data.l[1] = 0; // flags
+    drop.data.l[2] = qt_x_time;
+    drop.data.l[3] = 0;
+    drop.data.l[4] = 0;
+
+    QWidget * w = QWidget::find( qt_xdnd_current_proxy_target );
+
+    if ( w && w->isDesktop() && !w->acceptDrops() )
+	w = 0;
+
+    if ( w )
+	qt_handle_xdnd_drop( w, (const XEvent *)&drop, FALSE );
+    else
+	XSendEvent( QPaintDevice::x11AppDisplay(), qt_xdnd_current_proxy_target, False,
+		    NoEventMask, (XEvent*)&drop );
+
+#ifndef QT_NO_CURSOR
+    if ( restoreCursor ) {
+	QApplication::restoreOverrideCursor();
+	restoreCursor = FALSE;
+    }
+#endif
+}
+
+
+
+bool qt_xdnd_handle_badwindow()
+{
+    if ( qt_xdnd_source_object && qt_xdnd_current_target ) {
+	qt_xdnd_current_target = 0;
+	qt_xdnd_current_proxy_target = 0;
+	delete qt_xdnd_source_object;
+	qt_xdnd_source_object = 0;
+	delete qt_xdnd_deco;
+	qt_xdnd_deco = 0;
+	return TRUE;
+    }
+    if ( qt_xdnd_dragsource_xid ) {
+	qt_xdnd_dragsource_xid = 0;
+	if ( qt_xdnd_current_widget ) {
+	    QDragLeaveEvent e;
+	    QApplication::sendEvent( qt_xdnd_current_widget, &e );
+	    qt_xdnd_current_widget = 0;
+	}
+	return TRUE;
+    }
+    return FALSE;
+}
+
+
+/*!
+    \class QDragMoveEvent qevent.h
+    \ingroup events
+    \ingroup draganddrop
+    \brief The QDragMoveEvent class provides an event which is sent while a drag and drop is in progress.
+
+    When a widget \link QWidget::setAcceptDrops() accepts drop
+    events\endlink, it will receive this event repeatedly while the
+    drag is within the widget's boundaries. The widget should examine
+    the event to see what data it \link QDragMoveEvent::provides()
+    provides\endlink, and accept() the drop if appropriate.
+
+    Note that this class inherits most of its functionality from
+    QDropEvent.
+*/
+
+
+/*!
+    Returns TRUE if this event provides format \a mimeType; otherwise
+    returns FALSE.
+
+    \sa data()
+*/
+
+bool QDropEvent::provides( const char *mimeType ) const
+{
+    if ( qt_motifdnd_active && qstrnicmp( mimeType, "text/", 5 ) == 0 )
+	return TRUE;
+
+    int n=0;
+    const char* f;
+    do {
+	f = format( n );
+	if ( !f )
+	    return FALSE;
+	n++;
+    } while( qstricmp( mimeType, f ) );
+    return TRUE;
+}
+
+void qt_xdnd_handle_selection_request( const XSelectionRequestEvent * req )
+{
+    if ( !req )
+	return;
+    XEvent evt;
+    evt.xselection.type = SelectionNotify;
+    evt.xselection.display = req->display;
+    evt.xselection.requestor = req->requestor;
+    evt.xselection.selection = req->selection;
+    evt.xselection.target = req->target;
+    evt.xselection.property = None;
+    evt.xselection.time = req->time;
+    const char* format = qt_xdnd_atom_to_str( req->target );
+    if ( format && qt_xdnd_source_object &&
+	 qt_xdnd_source_object->provides( format ) ) {
+	QByteArray a = qt_xdnd_source_object->encodedData(format);
+	XChangeProperty ( QPaintDevice::x11AppDisplay(), req->requestor, req->property,
+			  req->target, 8, PropModeReplace,
+			  (unsigned char *)a.data(), a.size() );
+	evt.xselection.property = req->property;
+    }
+    // ### this can die if req->requestor crashes at the wrong
+    // ### moment
+    XSendEvent( QPaintDevice::x11AppDisplay(), req->requestor, False, 0, &evt );
+}
+
+/*
+	XChangeProperty ( QPaintDevice::x11AppDisplay(), req->requestor, req->property,
+			  XA_STRING, 8,
+			  PropModeReplace,
+			  (uchar *)d->text(), strlen(d->text()) );
+	evt.xselection.property = req->property;
+*/
+
+static QByteArray qt_xdnd_obtain_data( const char *format )
+{
+    QByteArray result;
+
+    QWidget* w;
+    if ( qt_xdnd_dragsource_xid && qt_xdnd_source_object &&
+	 (w=QWidget::find( qt_xdnd_dragsource_xid ))
+	   && (!w->isDesktop() || w->acceptDrops()) )
+    {
+	QDragObject * o = qt_xdnd_source_object;
+	if ( o->provides( format ) )
+	    result = o->encodedData(format);
+	return result;
+    }
+
+    Atom * a = qt_xdnd_str_to_atom( format );
+    if ( !a || !*a )
+	return result;
+
+    if ( !qt_xdnd_target_data )
+	qt_xdnd_target_data = new QIntDict<QByteArray>( 17 );
+
+    if ( qt_xdnd_target_data->find( (int)*a ) ) {
+	result = *(qt_xdnd_target_data->find( (int)*a ));
+    } else {
+	if ( XGetSelectionOwner( QPaintDevice::x11AppDisplay(),
+				 qt_xdnd_selection ) == None )
+	    return result; // should never happen?
+
+	QWidget* tw = qt_xdnd_current_widget;
+	if ( !qt_xdnd_current_widget ||
+	     qt_xdnd_current_widget->isDesktop() ) {
+	    tw = new QWidget;
+	}
+	XConvertSelection( QPaintDevice::x11AppDisplay(),
+			   qt_xdnd_selection,
+                           *a,
+			   qt_xdnd_selection,
+			   tw->winId(),
+                           qt_xdnd_target_current_time );
+	XFlush( QPaintDevice::x11AppDisplay() );
+
+	XEvent xevent;
+	bool got=qt_xclb_wait_for_event( QPaintDevice::x11AppDisplay(),
+				      tw->winId(),
+				      SelectionNotify, &xevent, 5000);
+	if ( got ) {
+	    Atom type;
+
+	    if ( qt_xclb_read_property( QPaintDevice::x11AppDisplay(),
+					tw->winId(),
+					qt_xdnd_selection, TRUE,
+					&result, 0, &type, 0, FALSE ) ) {
+		if ( type == qt_incr_atom ) {
+		    int nbytes = result.size() >= 4 ? *((int*)result.data()) : 0;
+		    result = qt_xclb_read_incremental_property( QPaintDevice::x11AppDisplay(),
+								tw->winId(),
+								qt_xdnd_selection,
+								nbytes, FALSE );
+		} else if ( type != *a ) {
+		    // (includes None) qDebug( "Qt clipboard: unknown atom %ld", type);
+		}
+#if 0
+		// this needs to be matched by a qt_xdnd_target_data->clear()
+		// when each drag is finished. for 2.0, we do the safe thing
+		// and disable the entire caching.
+		if ( type != None )
+		    qt_xdnd_target_data->insert( (int)((long)a), new QByteArray(result) );
+#endif
+	    }
+	}
+	if ( !qt_xdnd_current_widget ||
+	     qt_xdnd_current_widget->isDesktop() ) {
+	    delete tw;
+	}
+    }
+
+    return result;
+}
+
+
+/*
+  Enable drag and drop for widget w by installing the proper
+  properties on w's toplevel widget.
+*/
+bool qt_dnd_enable( QWidget* w, bool on )
+{
+    w = w->topLevelWidget();
+
+    if ( on ) {
+	if ( ( (QExtraWidget*)w)->topData()->dnd )
+	    return TRUE; // been there, done that
+	((QExtraWidget*)w)->topData()->dnd  = 1;
+    }
+
+    qt_motifdnd_enable( w, on );
+    return qt_xdnd_enable( w, on );
+}
+
+
+/*!
+    \class QDropEvent qevent.h
+    \ingroup events
+    \ingroup draganddrop
+
+    \brief The QDropEvent class provides an event which is sent when a drag and drop is completed.
+
+    When a widget \link QWidget::setAcceptDrops() accepts drop
+    events\endlink, it will receive this event if it has accepted the
+    most recent QDragEnterEvent or QDragMoveEvent sent to it.
+
+    The widget should use data() to extract the data in an appropriate
+    format.
+*/
+
+
+/*!
+    \fn QDropEvent::QDropEvent (const QPoint & pos, Type typ)
+
+    Constructs a drop event that drops a drop of type \a typ on point
+    \a pos.
+*/ // ### pos is in which coordinate system?
+
+
+/*!
+    Returns a byte array containing the drag's data, in \a format.
+
+    data() normally needs to get the data from the drag source, which
+    is potentially very slow, so it's advisable to call this function
+    only if you're sure that you will need the data in \a format.
+
+    The resulting data will have a size of 0 if the format was not
+    available.
+
+    \sa format() QByteArray::size()
+*/
+
+QByteArray QDropEvent::encodedData( const char *format ) const
+{
+    if ( qt_motifdnd_active )
+	return qt_motifdnd_obtain_data( format );
+    return qt_xdnd_obtain_data( format );
+}
+
+/*!
+    Returns a string describing one of the available data types for
+    this drag. Common examples are "text/plain" and "image/gif". If \a
+    n is less than zero or greater than the number of available data
+    types, format() returns 0.
+
+    This function is provided mainly for debugging. Most drop targets
+    will use provides().
+
+    \sa data() provides()
+*/
+
+const char* QDropEvent::format( int n ) const
+{
+    if ( qt_motifdnd_active )
+	return qt_motifdnd_format( n );
+
+    int i = 0;
+    while( i<n && qt_xdnd_types[i] )
+	i++;
+    if ( i < n )
+	return 0;
+
+    const char* name = qt_xdnd_atom_to_str( qt_xdnd_types[i] );
+    if ( !name )
+	return 0; // should never happen
+
+    return name;
+}
+
+bool QDragManager::drag( QDragObject * o, QDragObject::DragMode mode )
+{
+    if ( object == o || !o || !o->parent() )
+	return FALSE;
+
+    if ( object ) {
+	cancel();
+	qApp->removeEventFilter( this );
+	beingCancelled = FALSE;
+    }
+
+    if ( qt_xdnd_source_object ) {
+	// the last drag and drop operation hasn't finished, so we are going to wait
+	// for one second to see if it does... if the finish message comes after this,
+	// then we could still have problems, but this is highly unlikely
+	QApplication::flushX();
+
+	QTime started = QTime::currentTime();
+	QTime now = started;
+	do {
+	    XEvent event;
+	    if ( XCheckTypedEvent( QPaintDevice::x11AppDisplay(),
+				   ClientMessage, &event ) )
+		qApp->x11ProcessEvent( &event );
+
+	    now = QTime::currentTime();
+	    if ( started > now ) // crossed midnight
+		started = now;
+
+	    // sleep 50ms, so we don't use up CPU cycles all the time.
+	    struct timeval usleep_tv;
+	    usleep_tv.tv_sec = 0;
+	    usleep_tv.tv_usec = 50000;
+	    select(0, 0, 0, 0, &usleep_tv);
+	} while ( qt_xdnd_source_object && started.msecsTo(now) < 1000 );
+    }
+
+    qt_xdnd_source_object = o;
+    qt_xdnd_source_object->setTarget( 0 );
+    qt_xdnd_deco = new QShapedPixmapWidget();
+
+    willDrop = FALSE;
+
+    object = o;
+    updatePixmap();
+
+    dragSource = (QWidget *)(object->parent());
+
+    qt_xdnd_deco->x11SetWindowTransient( dragSource->topLevelWidget());
+    qApp->installEventFilter( this );
+    qt_xdnd_source_current_time = qt_x_time;
+    XSetSelectionOwner( QPaintDevice::x11AppDisplay(), qt_xdnd_selection,
+			dragSource->topLevelWidget()->winId(),
+			qt_xdnd_source_current_time );
+    oldstate = ButtonState(-1); // #### Should use state that caused the drag
+    drag_mode = mode;
+    global_accepted_action = QDropEvent::Copy;
+    updateMode(ButtonState(0));
+    qt_xdnd_source_sameanswer = QRect();
+    move(QCursor::pos());
+    heartbeat = startTimer(200);
+    need_modifiers_check = FALSE;
+
+#ifndef QT_NO_CURSOR
+    qApp->setOverrideCursor( arrowCursor );
+    restoreCursor = TRUE;
+    updateCursor();
+#endif
+
+    dndCancelled = FALSE;
+    qt_xdnd_dragging = TRUE;
+
+    if (!QWidget::mouseGrabber())
+	qt_xdnd_deco->grabMouse();
+
+    qApp->enter_loop(); // Do the DND.
+
+#ifndef QT_NO_CURSOR
+    qApp->restoreOverrideCursor();
+#endif
+
+    delete qt_xdnd_deco;
+    qt_xdnd_deco = 0;
+    killTimer( heartbeat );
+    heartbeat = -1;
+    qt_xdnd_current_screen = -1;
+    qt_xdnd_dragging = FALSE;
+
+    return ((! dndCancelled) && // source del?
+	    (global_accepted_action == QDropEvent::Copy &&
+	     global_requested_action == QDropEvent::Move));
+
+    // qt_xdnd_source_object persists until we get an xdnd_finish message
+}
+
+void QDragManager::updatePixmap( const QPoint& cursorPos )
+{
+    if ( qt_xdnd_deco ) {
+	QPixmap pm;
+	QPoint pm_hot(default_pm_hotx,default_pm_hoty);
+	if ( object ) {
+	    pm = object->pixmap();
+	    if ( !pm.isNull() )
+		pm_hot = object->pixmapHotSpot();
+	}
+	if ( pm.isNull() ) {
+	    if ( !defaultPm )
+		defaultPm = new QPixmap(default_pm);
+	    pm = *defaultPm;
+	}
+	qt_xdnd_deco->setPixmap(pm, pm_hot);
+	qt_xdnd_deco->move(cursorPos-pm_hot);
+	    //if ( willDrop ) {
+	    qt_xdnd_deco->show();
+	    //} else {
+	    //    qt_xdnd_deco->hide();
+	    //}
+    }
+}
+
+void QDragManager::updatePixmap()
+{
+    updatePixmap( QCursor::pos());
+}
+
+#endif // QT_NO_DRAGANDDROP