Add doc for wxGraphicsContext.Create(), which is a lightweight context with no target...
[wxWidgets.git] / src / gtk / dnd.cpp
index d8ba14eba0b47555ecc3543b3065db5dff0f3ea3..4679fd0bbd055932c9a1755695e5b796ab633b4b 100644 (file)
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        dnd.cpp
+// Name:        src/gtk/dnd.cpp
 // Purpose:     wxDropTarget class
 // Author:      Robert Roebling
 // Id:          $Id$
@@ -7,42 +7,26 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "dnd.h"
-#endif
-
-#include "wx/dnd.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
 
 #if wxUSE_DRAG_AND_DROP
 
-#include "wx/window.h"
-#include "wx/app.h"
-#include "wx/gdicmn.h"
-#include "wx/intl.h"
-#include "wx/utils.h"
-
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
-#include "gdk/gdkprivate.h"
-
-#include "gtk/gtkdnd.h"
-#include "gtk/gtkselection.h"
-
-//-----------------------------------------------------------------------------
-// idle system
-//-----------------------------------------------------------------------------
+#include "wx/dnd.h"
 
-extern void wxapp_install_idle_handler();
-extern bool g_isIdle;
+#ifndef WX_PRECOMP
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/utils.h"
+    #include "wx/window.h"
+    #include "wx/gdicmn.h"
+#endif
 
-//-----------------------------------------------------------------------------
-// thread system
-//-----------------------------------------------------------------------------
+#include "wx/scopeguard.h"
 
-#if wxUSE_THREADS
-extern void wxapp_install_thread_wakeup();
-extern void wxapp_uninstall_thread_wakeup();
-#endif
+#include <gtk/gtk.h>
+#include "wx/gtk/private/gtk2-compat.h"
 
 //----------------------------------------------------------------------------
 // global data
@@ -50,127 +34,156 @@ extern void wxapp_uninstall_thread_wakeup();
 
 extern bool g_blockEventsOnDrag;
 
+// the flags used for the last DoDragDrop()
+static long gs_flagsForDrag = 0;
+
+// the trace mask we use with wxLogTrace() - call
+// wxLog::AddTraceMask(TRACE_DND) to enable the trace messages from here
+// (there are quite a few of them, so don't enable this by default)
+#define TRACE_DND "dnd"
+
+// global variables because GTK+ DnD want to have the
+// mouse event that caused it
+extern GdkEvent *g_lastMouseEvent;
+extern int       g_lastButtonNumber;
+
 //----------------------------------------------------------------------------
 // standard icons
 //----------------------------------------------------------------------------
 
-/* XPM */
-static char * gv_xpm[] = {
-"40 34 3 1",
-"         s None c None",
-".        c black",
-"X        c white",
-"                                        ",
-"                                        ",
-"                  ......                ",
-"                ..XXXXXX..              ",
-"               .XXXXXXXXXX.             ",
-"              .XXXXXXXXXXXX.            ",
-"              .XXXXXXXXXXXX.            ",
-"             .XXXXXXXXXXXXXX.           ",
-"             .XXX..XXXX..XXX.           ",
-"          ....XX....XX....XX.           ",
-"         .XXX.XXX..XXXX..XXX....        ",
-"        .XXXXXXXXXXXXXXXXXXX.XXX.       ",
-"        .XXXXXXXXXXXXXXXXXXXXXXXX.      ",
-"        .XXXXXXXXXXXXXXXXXXXXXXXX.      ",
-"         ..XXXXXXXXXXXXXXXXXXXXXX.      ",
-"           .XXXXXXXXXXXXXXXXXX...       ",
-"           ..XXXXXXXXXXXXXXXX.          ",
-"            .XXXXXXXXXXXXXXXX.          ",
-"            .XXXXXXXXXXXXXXXX.          ",
-"            .XXXXXXXXXXXXXXXXX.         ",
-"            .XXXXXXXXXXXXXXXXX.         ",
-"            .XXXXXXXXXXXXXXXXXX.        ",
-"            .XXXXXXXXXXXXXXXXXXX.       ",
-"           .XXXXXXXXXXXXXXXXXXXXX.      ",
-"           .XXXXXXXXXXXXXX.XXXXXXX.     ",
-"          .XXXXXXX.XXXXXXX.XXXXXXX.     ",
-"         .XXXXXXXX.XXXXXXX.XXXXXXX.     ",
-"         .XXXXXXX...XXXXX...XXXXX.      ",
-"         .XXXXXXX.  .....   .....       ",
-"         ..XXXX..                       ",
-"           ....                         ",
-"                                        ",
-"                                        ",
-"                                        "};
-
-/* XPM */
-static char * page_xpm[] = {
-/* width height ncolors chars_per_pixel */
-"32 32 5 1",
-/* colors */
-"         s None        c None",
-".        c black",
-"X        c wheat",
-"o        c tan",
-"O        c #6699FF",
+/* Copyright (c) Julian Smart */
+static const char * page_xpm[] = {
+/* columns rows colors chars-per-pixel */
+"32 32 37 1",
+"5 c #7198D9",
+", c #769CDA",
+"2 c #DCE6F6",
+"i c #FFFFFF",
+"e c #779DDB",
+": c #9AB6E4",
+"9 c #EAF0FA",
+"- c #B1C7EB",
+"$ c #6992D7",
+"y c #F7F9FD",
+"= c #BED0EE",
+"q c #F0F5FC",
+"; c #A8C0E8",
+"@ c #366BC2",
+"  c None",
+"u c #FDFEFF",
+"8 c #5987D3",
+"* c #C4D5F0",
+"7 c #7CA0DC",
+"O c #487BCE",
+"< c #6B94D7",
+"& c #CCDAF2",
+"> c #89A9DF",
+"3 c #5584D1",
+"w c #82A5DE",
+"1 c #3F74CB",
+"+ c #3A70CA",
+". c #3569BF",
+"% c #D2DFF4",
+"# c #3366BB",
+"r c #F5F8FD",
+"0 c #FAFCFE",
+"4 c #DFE8F7",
+"X c #5E8AD4",
+"o c #5282D0",
+"t c #B8CCEC",
+"6 c #E5EDF9",
 /* pixels */
-"    ...................         ",
-"    .XXXXXXXXXXXXXXXXX..        ",
-"    .XXXXXXXXXXXXXXXXX.o.       ",
-"    .XXXXXXXXXXXXXXXXX.oo.      ",
-"    .XXXXXXXXXXXXXXXXX.ooo.     ",
-"    .XXXXXXXXXXXXXXXXX.oooo.    ",
-"    .XXXXXXXXXXXXXXXXX.......   ",
-"    .XXXXXOOOOOOOOOOXXXooooo.   ",
-"    .XXXXXXXXXXXXXXXXXXooooo.   ",
-"    .XXXXXOOOOOOOOOOXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXOOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXOOOOOOOOOOXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXOOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXOOOOOOOOOOXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXOOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXOOOOOOOXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .........................   "};
+"                                ",
+"                                ",
+"                                ",
+"                                ",
+"                                ",
+"       .XXXooOO++@#             ",
+"       $%&*=-;::>,<1            ",
+"       $2%&*=-;::><:3           ",
+"       $42%&*=-;::<&:3          ",
+"       56477<<<<8<<9&:X         ",
+"       59642%&*=-;<09&:5        ",
+"       5q9642%&*=-<<<<<#        ",
+"       5qqw777<<<<<88:>+        ",
+"       erqq9642%&*=t;::+        ",
+"       eyrqq9642%&*=t;:O        ",
+"       eyywwww777<<<<t;O        ",
+"       e0yyrqq9642%&*=to        ",
+"       e00yyrqq9642%&*=o        ",
+"       eu0wwwwwww777<&*X        ",
+"       euu00yyrqq9642%&X        ",
+"       eiuu00yyrqq9642%X        ",
+"       eiiwwwwwwwwww742$        ",
+"       eiiiuu00yyrqq964$        ",
+"       eiiiiuu00yyrqq96$        ",
+"       eiiiiiuu00yyrqq95        ",
+"       eiiiiiiuu00yyrqq5        ",
+"       eeeeeeeeeeeeee55e        ",
+"                                ",
+"                                ",
+"                                ",
+"                                ",
+"                                "
+};
+
+
+// ============================================================================
+// private functions
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// convert between GTK+ and wxWidgets DND constants
+// ----------------------------------------------------------------------------
+
+static wxDragResult ConvertFromGTK(long action)
+{
+    switch ( action )
+    {
+        case GDK_ACTION_COPY:
+            return wxDragCopy;
+
+        case GDK_ACTION_LINK:
+            return wxDragLink;
 
+        case GDK_ACTION_MOVE:
+            return wxDragMove;
+    }
 
+    return wxDragNone;
+}
 
 // ----------------------------------------------------------------------------
 // "drag_leave"
 // ----------------------------------------------------------------------------
 
+extern "C" {
 static void target_drag_leave( GtkWidget *WXUNUSED(widget),
                                GdkDragContext *context,
                                guint WXUNUSED(time),
                                wxDropTarget *drop_target )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
-
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
-    drop_target->SetDragContext( context );
+    drop_target->GTKSetDragContext( context );
 
     /* we don't need return values. this event is just for
        information */
     drop_target->OnLeave();
 
     /* this has to be done because GDK has no "drag_enter" event */
-    drop_target->m_firstMotion = TRUE;
+    drop_target->m_firstMotion = true;
 
     /* after this, invalidate the drop_target's GdkDragContext */
-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    drop_target->GTKSetDragContext( NULL );
+}
 }
 
 // ----------------------------------------------------------------------------
 // "drag_motion"
 // ----------------------------------------------------------------------------
 
+extern "C" {
 static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
                                     GdkDragContext *context,
                                     gint x,
@@ -178,44 +191,76 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
                                     guint time,
                                     wxDropTarget *drop_target )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
-
     /* Owen Taylor: "if the coordinates not in a drop zone,
        return FALSE, otherwise call gtk_drag_status() and
        return TRUE" */
 
-    /* inform the wxDropTarget about the current GdkDragContext.
-       this is only valid for the duration of this call */
-    drop_target->SetDragContext( context );
+#if 0
+    wxPrintf( "motion\n" );
+    GList *tmp_list;
+    for (tmp_list = context->targets; tmp_list; tmp_list = tmp_list->next)
+    {
+        wxString atom = wxString::FromAscii( gdk_atom_name (GDK_POINTER_TO_ATOM (tmp_list->data)) );
+        wxPrintf( "Atom: %s\n", atom );
+    }
+#endif
+
+    // Inform the wxDropTarget about the current GdkDragContext.
+    // This is only valid for the duration of this call.
+    drop_target->GTKSetDragContext( context );
+
+    // Does the source actually accept the data type?
+    if (drop_target->GTKGetMatchingPair() == (GdkAtom) 0)
+    {
+        drop_target->GTKSetDragContext( NULL );
+        return FALSE;
+    }
+
+    wxDragResult suggested_action = drop_target->GTKFigureOutSuggestedAction();
+
+    wxDragResult result = wxDragNone;
 
     if (drop_target->m_firstMotion)
     {
-        /* the first "drag_motion" event substitutes a "drag_enter" event */
-        drop_target->OnEnter();
+        // the first "drag_motion" event substitutes a "drag_enter" event
+        result = drop_target->OnEnter( x, y, suggested_action );
+    }
+    else
+    {
+        // give program a chance to react (i.e. to say no by returning FALSE)
+        result = drop_target->OnDragOver( x, y, suggested_action );
     }
 
-    /* give program a chance to react (i.e. to say no by returning FALSE) */
-    bool ret = drop_target->OnMove( x, y );
+    GdkDragAction result_action = GDK_ACTION_DEFAULT;
+    if (result == wxDragCopy)
+        result_action = GDK_ACTION_COPY;
+    else if (result == wxDragLink)
+        result_action = GDK_ACTION_LINK;
+    else
+        result_action = GDK_ACTION_MOVE;
+
+    // is result action actually supported
+    bool ret = (result_action != GDK_ACTION_DEFAULT) &&
+               (gdk_drag_context_get_actions(context) & result_action);
 
-    /* we don't yet handle which "actions" (i.e. copy or move)
-       the target accepts. so far we simply accept the
-       suggested action. TODO. */
     if (ret)
-        gdk_drag_status( context, context->suggested_action, time );
+        gdk_drag_status( context, result_action, time );
 
-    /* after this, invalidate the drop_target's GdkDragContext */
-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    // after this, invalidate the drop_target's GdkDragContext
+    drop_target->GTKSetDragContext( NULL );
 
-    /* this has to be done because GDK has no "drag_enter" event */
-    drop_target->m_firstMotion = FALSE;
+    // this has to be done because GDK has no "drag_enter" event
+    drop_target->m_firstMotion = false;
 
     return ret;
 }
+}
 
 // ----------------------------------------------------------------------------
 // "drag_drop"
 // ----------------------------------------------------------------------------
 
+extern "C" {
 static gboolean target_drag_drop( GtkWidget *widget,
                                   GdkDragContext *context,
                                   gint x,
@@ -223,58 +268,90 @@ static gboolean target_drag_drop( GtkWidget *widget,
                                   guint time,
                                   wxDropTarget *drop_target )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
-
     /* Owen Taylor: "if the drop is not in a drop zone,
        return FALSE, otherwise, if you aren't accepting
        the drop, call gtk_drag_finish() with success == FALSE
        otherwise call gtk_drag_data_get()" */
 
-//    printf( "drop.\n" );
-
-    /* this seems to make a difference between not accepting
-       due to wrong target area and due to wrong format. let
-       us hope that this is not required.. */
-
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
-    drop_target->SetDragContext( context );
+    drop_target->GTKSetDragContext( context );
+
+    // Does the source actually accept the data type?
+    if (drop_target->GTKGetMatchingPair() == (GdkAtom) 0)
+    {
+        // cancel the whole thing
+        gtk_drag_finish( context,
+                          FALSE,        // no success
+                          FALSE,        // don't delete data on dropping side
+                          time );
+
+        drop_target->GTKSetDragContext( NULL );
+
+        drop_target->m_firstMotion = true;
+
+        return FALSE;
+    }
 
     /* inform the wxDropTarget about the current drag widget.
        this is only valid for the duration of this call */
-    drop_target->SetDragWidget( widget );
+    drop_target->GTKSetDragWidget( widget );
 
     /* inform the wxDropTarget about the current drag time.
        this is only valid for the duration of this call */
-    drop_target->SetDragTime( time );
+    drop_target->GTKSetDragTime( time );
+
+    /* reset the block here as someone might very well
+       show a dialog as a reaction to a drop and this
+       wouldn't work without events */
+    g_blockEventsOnDrag = false;
 
     bool ret = drop_target->OnDrop( x, y );
 
     if (!ret)
     {
+        wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") );
+
         /* cancel the whole thing */
         gtk_drag_finish( context,
                           FALSE,        /* no success */
                           FALSE,        /* don't delete data on dropping side */
                           time );
     }
+    else
+    {
+        wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned true") );
+
+        GdkAtom format = drop_target->GTKGetMatchingPair();
+
+        // this does happen somehow, see bug 555111
+        wxCHECK_MSG( format, FALSE, wxT("no matching GdkAtom for format?") );
+
+        /* this should trigger an "drag_data_received" event */
+        gtk_drag_get_data( widget,
+                           context,
+                           format,
+                           time );
+    }
 
     /* after this, invalidate the drop_target's GdkDragContext */
-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    drop_target->GTKSetDragContext( NULL );
 
     /* after this, invalidate the drop_target's drag widget */
-    drop_target->SetDragWidget( (GtkWidget*) NULL );
+    drop_target->GTKSetDragWidget( NULL );
 
     /* this has to be done because GDK has no "drag_enter" event */
-    drop_target->m_firstMotion = TRUE;
+    drop_target->m_firstMotion = true;
 
     return ret;
 }
+}
 
 // ----------------------------------------------------------------------------
 // "drag_data_received"
 // ----------------------------------------------------------------------------
 
+extern "C" {
 static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
                                        GdkDragContext *context,
                                        gint x,
@@ -284,13 +361,10 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
                                        guint time,
                                        wxDropTarget *drop_target )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
-
     /* Owen Taylor: "call gtk_drag_finish() with
        success == TRUE" */
 
-
-    if ((data->length <= 0) || (data->format != 8))
+    if (gtk_selection_data_get_length(data) <= 0 || gtk_selection_data_get_format(data) != 8)
     {
         /* negative data length and non 8-bit data format
            qualifies for junk */
@@ -299,184 +373,197 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
         return;
     }
 
-    wxLogDebug( wxT( "Drop target: data received") );
-    
+    wxLogTrace(TRACE_DND, wxT( "Drop target: data received event") );
+
     /* inform the wxDropTarget about the current GtkSelectionData.
        this is only valid for the duration of this call */
-    drop_target->SetDragData( data );
+    drop_target->GTKSetDragData( data );
 
-    if (drop_target->OnData( x, y ))
+    wxDragResult result = ConvertFromGTK(gdk_drag_context_get_selected_action(context));
+
+    if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) )
     {
-        /* tell GTK that data transfer was successfull */
+        wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned true") );
+
+        /* tell GTK that data transfer was successful */
         gtk_drag_finish( context, TRUE, FALSE, time );
     }
     else
     {
-        /* tell GTK that data transfer was not successfull */
+        wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") );
+
+        /* tell GTK that data transfer was not successful */
         gtk_drag_finish( context, FALSE, FALSE, time );
     }
 
     /* after this, invalidate the drop_target's drag data */
-    drop_target->SetDragData( (GtkSelectionData*) NULL );
+    drop_target->GTKSetDragData( NULL );
+}
 }
 
 //----------------------------------------------------------------------------
 // wxDropTarget
 //----------------------------------------------------------------------------
 
-wxDropTarget::wxDropTarget()
+wxDropTarget::wxDropTarget( wxDataObject *data )
+            : wxDropTargetBase( data )
 {
-    m_firstMotion = TRUE;
-    m_dragContext = (GdkDragContext*) NULL;
-    m_dragWidget = (GtkWidget*) NULL;
-    m_dragData = (GtkSelectionData*) NULL;
+    m_firstMotion = true;
+    m_dragContext = NULL;
+    m_dragWidget = NULL;
+    m_dragData = NULL;
     m_dragTime = 0;
 }
 
-wxDropTarget::~wxDropTarget()
+wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
+                                       wxCoord WXUNUSED(y),
+                                       wxDragResult def )
 {
+    return def;
 }
 
-void wxDropTarget::OnEnter()
+bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
 {
+    return true;
 }
 
-void wxDropTarget::OnLeave()
+wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
+                                   wxDragResult def )
 {
+    return GetData() ? def : wxDragNone;
 }
 
-bool wxDropTarget::OnMove( long WXUNUSED(x), long WXUNUSED(y) )
+wxDragResult wxDropTarget::GTKFigureOutSuggestedAction()
 {
-    if (GetFormatCount() == 0)
-        return FALSE;
-       
-    for (size_t i = 0; i < GetFormatCount(); i++)
+    if (!m_dragContext)
+        return wxDragError;
+
+    // GTK+ always supposes that we want to copy the data by default while we
+    // might want to move it, so examine not only suggested_action - which is
+    // only good if we don't have our own preferences - but also the actions
+    // field
+    wxDragResult suggested_action = wxDragNone;
+    const GdkDragAction actions = gdk_drag_context_get_actions(m_dragContext);
+    if (GetDefaultAction() == wxDragNone)
     {
-        if (IsSupported( GetFormat(i) ))
-           return TRUE;
+        // use default action set by wxDropSource::DoDragDrop()
+        if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove &&
+            (actions & GDK_ACTION_MOVE))
+        {
+            // move is requested by the program and allowed by GTK+ - do it, even
+            // though suggested_action may be currently wxDragCopy
+            suggested_action = wxDragMove;
+        }
+        else // use whatever GTK+ says we should
+        {
+            suggested_action = ConvertFromGTK(gdk_drag_context_get_suggested_action(m_dragContext));
+
+#if 0
+            // RR: I don't understand the code below: if the drag comes from
+            //     a different app, the gs_flagsForDrag is invalid; if it
+            //     comes from the same wx app, then GTK+ hopefully won't
+            //     suggest something we didn't allow in the frist place
+            //     in DoDrop()
+            if ( (suggested_action == wxDragMove) && !(gs_flagsForDrag & wxDrag_AllowMove) )
+            {
+                // we're requested to move but we can't
+                suggested_action = wxDragCopy;
+            }
+#endif
+        }
     }
-    
-    return FALSE;
-}
+    else if (GetDefaultAction() == wxDragMove &&
+            (actions & GDK_ACTION_MOVE))
+    {
 
-bool wxDropTarget::OnDrop( long WXUNUSED(x), long WXUNUSED(y) )
-{
-    if (GetFormatCount() == 0)
-        return FALSE;
-       
-    for (size_t i = 0; i < GetFormatCount(); i++)
+        suggested_action = wxDragMove;
+    }
+    else
     {
-        if (IsSupported( GetFormat(i) ))
-       {
-            RequestData( GetFormat(i) );
-           return TRUE;
-       }
+        if (actions & GDK_ACTION_COPY)
+            suggested_action = wxDragCopy;
+        else if (actions & GDK_ACTION_MOVE)
+            suggested_action = wxDragMove;
+        else if (actions & GDK_ACTION_LINK)
+            suggested_action = wxDragLink;
+        else
+            suggested_action = wxDragNone;
     }
-    
-    return FALSE;
-}
 
-bool wxDropTarget::OnData( long WXUNUSED(x), long WXUNUSED(y) )
-{
-    return FALSE;
+    return suggested_action;
 }
 
-bool wxDropTarget::RequestData( wxDataFormat format )
+wxDataFormat wxDropTarget::GetMatchingPair()
 {
-    if (!m_dragContext) return FALSE;
-    if (!m_dragWidget) return FALSE;
-
-/*
-    wxPrintf( wxT("format: %s.\n"), format.GetId().c_str() );
-    if (format.GetType() == wxDF_PRIVATE) wxPrintf( wxT("private data.\n") );
-    if (format.GetType() == wxDF_TEXT) wxPrintf( wxT("text data.\n") );
-*/
-
-#if wxUSE_THREADS
-    /* disable GUI threads */
-    wxapp_uninstall_thread_wakeup();
-#endif
-
-    /* this should trigger an "drag_data_received" event */
-    gtk_drag_get_data( m_dragWidget,
-                       m_dragContext,
-                       format,
-                       m_dragTime );
-
-#if wxUSE_THREADS
-    /* re-enable GUI threads */
-    wxapp_install_thread_wakeup();
-#endif
-
-    return TRUE;
+    return wxDataFormat( GTKGetMatchingPair() );
 }
 
-bool wxDropTarget::IsSupported( wxDataFormat format )
+GdkAtom wxDropTarget::GTKGetMatchingPair(bool quiet)
 {
-    if (!m_dragContext) return FALSE;
+    if (!m_dataObject)
+        return (GdkAtom) 0;
+
+    if (!m_dragContext)
+        return (GdkAtom) 0;
 
-    GList *child = m_dragContext->targets;
+    const GList* child = gdk_drag_context_list_targets(m_dragContext);
     while (child)
     {
-        GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data);
+        GdkAtom formatAtom = (GdkAtom)(child->data);
+        wxDataFormat format( formatAtom );
 
-#ifdef __WXDEBUG__
-        char *name = gdk_atom_name( formatAtom );
-        if (name) wxLogDebug( "Drop target: drag has format: %s", name );
-#endif
+        if ( !quiet )
+        {
+            wxLogTrace(TRACE_DND, wxT("Drop target: drag has format: %s"),
+                       format.GetId().c_str());
+        }
+
+        if (m_dataObject->IsSupportedFormat( format ))
+            return formatAtom;
 
-        if (formatAtom == format) return TRUE;
         child = child->next;
     }
 
-    return FALSE;
+    return (GdkAtom) 0;
 }
 
-bool wxDropTarget::GetData( wxDataObject *data_object )
+bool wxDropTarget::GetData()
 {
-    if (!m_dragData) return FALSE;
+    if (!m_dragData)
+        return false;
 
-    if (m_dragData->target !=  data_object->GetFormat()) return FALSE;
+    if (!m_dataObject)
+        return false;
 
-    if (data_object->GetFormat().GetType() == wxDF_TEXT)
-    {
-        wxTextDataObject *text_object = (wxTextDataObject*)data_object;
-        text_object->SetText( (const char*)m_dragData->data );
-    } else
+    wxDataFormat dragFormat(gtk_selection_data_get_target(m_dragData));
 
-    if (data_object->GetFormat().GetType() == wxDF_FILENAME)
-    {
-    } else
+    if (!m_dataObject->IsSupportedFormat( dragFormat ))
+        return false;
 
-    if (data_object->GetFormat().GetType() == wxDF_PRIVATE)
-    {
-        wxPrivateDataObject *priv_object = (wxPrivateDataObject*)data_object;
-        priv_object->SetData( (const char*)m_dragData->data, (size_t)m_dragData->length );
-    }
+    m_dataObject->SetData(dragFormat,
+        (size_t)gtk_selection_data_get_length(m_dragData),
+        (const void*)gtk_selection_data_get_data(m_dragData));
 
-    return TRUE;
+    return true;
 }
 
-void wxDropTarget::UnregisterWidget( GtkWidget *widget )
+void wxDropTarget::GtkUnregisterWidget( GtkWidget *widget )
 {
     wxCHECK_RET( widget != NULL, wxT("unregister widget is NULL") );
 
     gtk_drag_dest_unset( widget );
 
-    gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
-                      GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
-
-    gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
-                      GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
-
-    gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
-                      GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
-
-    gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
-                      GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
+    g_signal_handlers_disconnect_by_func (widget,
+                                          (gpointer) target_drag_leave, this);
+    g_signal_handlers_disconnect_by_func (widget,
+                                          (gpointer) target_drag_motion, this);
+    g_signal_handlers_disconnect_by_func (widget,
+                                          (gpointer) target_drag_drop, this);
+    g_signal_handlers_disconnect_by_func (widget,
+                                          (gpointer) target_drag_data_received, this);
 }
 
-void wxDropTarget::RegisterWidget( GtkWidget *widget )
+void wxDropTarget::GtkRegisterWidget( GtkWidget *widget )
 {
     wxCHECK_RET( widget != NULL, wxT("register widget is NULL") );
 
@@ -492,121 +579,28 @@ void wxDropTarget::RegisterWidget( GtkWidget *widget )
 
     gtk_drag_dest_set( widget,
                        (GtkDestDefaults) 0,         /* no default behaviour */
-                       (GtkTargetEntry*) NULL,      /* we don't supply any formats here */
+                       NULL,      /* we don't supply any formats here */
                        0,                           /* number of targets = 0 */
                        (GdkDragAction) 0 );         /* we don't supply any actions here */
 
-    gtk_signal_connect( GTK_OBJECT(widget), "drag_leave",
-                      GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
+    g_signal_connect (widget, "drag_leave",
+                      G_CALLBACK (target_drag_leave), this);
 
-    gtk_signal_connect( GTK_OBJECT(widget), "drag_motion",
-                      GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
+    g_signal_connect (widget, "drag_motion",
+                      G_CALLBACK (target_drag_motion), this);
 
-    gtk_signal_connect( GTK_OBJECT(widget), "drag_drop",
-                      GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
+    g_signal_connect (widget, "drag_drop",
+                      G_CALLBACK (target_drag_drop), this);
 
-    gtk_signal_connect( GTK_OBJECT(widget), "drag_data_received",
-                      GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
-}
-
-//-------------------------------------------------------------------------
-// wxTextDropTarget
-//-------------------------------------------------------------------------
-
-bool wxTextDropTarget::OnData( long x, long y )
-{
-    wxTextDataObject data;
-    if (!GetData( &data )) return FALSE;
-
-    OnDropText( x, y, data.GetText() );
-
-    return TRUE;
-}
-
-//-------------------------------------------------------------------------
-// wxPrivateDropTarget
-//-------------------------------------------------------------------------
-
-/*
-wxPrivateDropTarget::wxPrivateDropTarget()
-{
-    m_id = wxTheApp->GetAppName();
-}
-
-wxPrivateDropTarget::wxPrivateDropTarget( const wxString &id )
-{
-    m_id = id;
-}
-
-bool wxPrivateDropTarget::OnMove( long WXUNUSED(x), long WXUNUSED(y) )
-{
-    return IsSupported( m_id );
-}
-
-bool wxPrivateDropTarget::OnDrop( long WXUNUSED(x), long WXUNUSED(y) )
-{
-    if (!IsSupported( m_id ))
-    {
-        RequestData( m_id );
-        return FALSE;
-    }
-
-    return FALSE;
-}
-
-bool wxPrivateDropTarget::OnData( long x, long y )
-{
-    if (!IsSupported( m_id )) return FALSE;
-
-    wxPrivateDataObject data;
-    if (!GetData( &data )) return FALSE;
-
-    OnDropData( x, y, data.GetData(), data.GetSize() );
-
-    return TRUE;
-}
-*/
-
-//----------------------------------------------------------------------------
-// A drop target which accepts files (dragged from File Manager or Explorer)
-//----------------------------------------------------------------------------
-
-bool wxFileDropTarget::OnData( long x, long y )
-{
-    wxFileDataObject data;
-    if (!GetData( &data )) return FALSE;
-
-    // get number of substrings /root/mytext.txt/0/root/myothertext.txt/0/0
-    size_t number = 0;
-    size_t i;
-    size_t size = data.GetFiles().Length();
-    wxChar *text = WXSTRINGCAST data.GetFiles();
-    for ( i = 0; i < size; i++)
-        if (text[i] == 0) number++;
-
-    if (number == 0) return FALSE;
-
-    wxChar **files = new wxChar*[number];
-
-    text = WXSTRINGCAST data.GetFiles();
-    for (i = 0; i < number; i++)
-    {
-        files[i] = text;
-        int len = wxStrlen( text );
-        text += len+1;
-    }
-
-    OnDropFiles( x, y, number, files );
-
-    free( files );
-
-    return TRUE;
+    g_signal_connect (widget, "drag_data_received",
+                      G_CALLBACK (target_drag_data_received), this);
 }
 
 //----------------------------------------------------------------------------
 // "drag_data_get"
 //----------------------------------------------------------------------------
 
+extern "C" {
 static void
 source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
                        GdkDragContext     *context,
@@ -615,280 +609,312 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
                        guint               WXUNUSED(time),
                        wxDropSource       *drop_source )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
+    wxDataFormat format(gtk_selection_data_get_target(selection_data));
 
-#ifdef __WXDEBUG__
-    char *name = gdk_atom_name( selection_data->target );
-    if (name) wxLogDebug( wxT("Drop source: format requested: %s"), name );
-#endif
-
-    drop_source->m_retValue = wxDragCancel;
-    
-    wxDataObject *data = drop_source->m_data;
-    
-    if (!data)
-       return;
+    wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"),
+               format.GetId().c_str());
 
-    if (!data->IsSupportedFormat(selection_data->target))
-       return;
+    drop_source->m_retValue = wxDragError;
 
-    if (data->GetDataSize(selection_data->target) == 0)
-       return;
-    
-    size_t size = data->GetDataSize(selection_data->target);
+    wxDataObject *data = drop_source->GetDataObject();
 
-//  printf( "data size: %d.\n", (int)data_size );
+    if (!data)
+    {
+        wxLogTrace(TRACE_DND, wxT("Drop source: no data object") );
+        return;
+    }
 
-    guchar *d = new guchar[size];
-    
-    if (!data->GetDataHere( selection_data->target, (void*)d ))
+    if (!data->IsSupportedFormat(format))
     {
-        free( d );
-       return;
+        wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") );
+        return;
     }
 
-#if wxUSE_THREADS
-    /* disable GUI threads */
-    wxapp_uninstall_thread_wakeup();
-#endif
+    if (data->GetDataSize(format) == 0)
+    {
+        wxLogTrace(TRACE_DND, wxT("Drop source: empty data") );
+        return;
+    }
 
-                gtk_selection_data_set( selection_data,
-                                        selection_data->target,
-                                        8,   // 8-bit
-                                        d,
-                                        size );
+    size_t size = data->GetDataSize(format);
 
-#if wxUSE_THREADS
-    /* enable GUI threads */
-    wxapp_install_thread_wakeup();
-#endif
+//  printf( "data size: %d.\n", (int)data_size );
 
-    free( d );
-    
-    /* so far only copy, no moves. TODO. */
-    drop_source->m_retValue = wxDragCopy;
-}
+    guchar *d = new guchar[size];
 
-//----------------------------------------------------------------------------
-// "drag_data_delete"
-//----------------------------------------------------------------------------
+    if (!data->GetDataHere( format, (void*)d ))
+    {
+        delete[] d;
+        return;
+    }
 
-static void source_drag_data_delete( GtkWidget          *WXUNUSED(widget),
-                                     GdkDragContext     *WXUNUSED(context),
-                                     wxDropSource       *drop_source )
-{
-    if (g_isIdle) wxapp_install_idle_handler();
+    drop_source->m_retValue = ConvertFromGTK(gdk_drag_context_get_selected_action(context));
 
-//  printf( "Delete the data!\n" );
+    gtk_selection_data_set( selection_data,
+                            gtk_selection_data_get_target(selection_data),
+                            8,   // 8-bit
+                            d,
+                            size );
 
-    drop_source->m_retValue = wxDragMove;
+    delete[] d;
 }
-
-//----------------------------------------------------------------------------
-// "drag_begin"
-//----------------------------------------------------------------------------
-
-static void source_drag_begin( GtkWidget          *WXUNUSED(widget),
-                               GdkDragContext     *WXUNUSED(context),
-                               wxDropSource       *WXUNUSED(drop_source) )
-{
-    if (g_isIdle) wxapp_install_idle_handler();
-
-//  printf( "drag_begin.\n" );
 }
 
 //----------------------------------------------------------------------------
 // "drag_end"
 //----------------------------------------------------------------------------
 
+extern "C" {
 static void source_drag_end( GtkWidget          *WXUNUSED(widget),
                              GdkDragContext     *WXUNUSED(context),
                              wxDropSource       *drop_source )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
+    drop_source->m_waiting = false;
+}
+}
+
+//-----------------------------------------------------------------------------
+// "configure_event" from m_iconWindow
+//-----------------------------------------------------------------------------
 
-//  printf( "drag_end.\n" );
+extern "C" {
+static gint
+gtk_dnd_window_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDropSource *source )
+{
+    source->GiveFeedback(ConvertFromGTK(gdk_drag_context_get_selected_action(source->m_dragContext)));
 
-    drop_source->m_waiting = FALSE;
+    return 0;
+}
 }
 
 //---------------------------------------------------------------------------
 // wxDropSource
 //---------------------------------------------------------------------------
 
-wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop )
+wxDropSource::wxDropSource(wxWindow *win,
+                           const wxIcon &iconCopy,
+                           const wxIcon &iconMove,
+                           const wxIcon &iconNone)
 {
-    g_blockEventsOnDrag = TRUE;
-    m_waiting = TRUE;
+    m_waiting = true;
+
+    m_iconWindow = NULL;
 
     m_window = win;
     m_widget = win->m_widget;
     if (win->m_wxwindow) m_widget = win->m_wxwindow;
 
-    m_data = (wxDataObject*) NULL;
-    m_retValue = wxDragCancel;
-
-    m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
-    m_goaheadCursor = wxCursor( wxCURSOR_HAND );
+    m_retValue = wxDragNone;
 
-    m_goIcon = go;
-    if (wxNullIcon == go) m_goIcon = wxIcon( page_xpm );
-    m_stopIcon = stop;
-    if (wxNullIcon == stop) m_stopIcon = wxIcon( gv_xpm );
+    SetIcons(iconCopy, iconMove, iconNone);
 }
 
-wxDropSource::wxDropSource( wxDataObject& data, wxWindow *win,
-                            const wxIcon &go, const wxIcon &stop )
+wxDropSource::wxDropSource(wxDataObject& data,
+                           wxWindow *win,
+                           const wxIcon &iconCopy,
+                           const wxIcon &iconMove,
+                           const wxIcon &iconNone)
 {
-    m_waiting = TRUE;
+    m_waiting = true;
+
+    SetData( data );
+
+    m_iconWindow = NULL;
 
     m_window = win;
     m_widget = win->m_widget;
     if (win->m_wxwindow) m_widget = win->m_wxwindow;
-    m_retValue = wxDragCancel;
 
-    m_data = &data;
+    m_retValue = wxDragNone;
 
-    m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
-    m_goaheadCursor = wxCursor( wxCURSOR_HAND );
-
-    m_goIcon = go;
-    if (wxNullIcon == go) m_goIcon = wxIcon( page_xpm );
-    m_stopIcon = stop;
-    if (wxNullIcon == stop) m_stopIcon = wxIcon( gv_xpm );
+    SetIcons(iconCopy, iconMove, iconNone);
 }
 
-void wxDropSource::SetData( wxDataObject& data )
+void wxDropSource::SetIcons(const wxIcon &iconCopy,
+                            const wxIcon &iconMove,
+                            const wxIcon &iconNone)
 {
-    if (m_data)
-        delete m_data;
+    m_iconCopy = iconCopy;
+    m_iconMove = iconMove;
+    m_iconNone = iconNone;
 
-    m_data = &data;
+    if ( !m_iconCopy.IsOk() )
+        m_iconCopy = wxIcon(page_xpm);
+    if ( !m_iconMove.IsOk() )
+        m_iconMove = m_iconCopy;
+    if ( !m_iconNone.IsOk() )
+        m_iconNone = m_iconCopy;
 }
 
 wxDropSource::~wxDropSource()
 {
-    if (m_data) 
-//        delete m_data;
+}
+
+void wxDropSource::PrepareIcon( int action, GdkDragContext *context )
+{
+    // get the right icon to display
+    wxIcon *icon = NULL;
+    if ( action & GDK_ACTION_MOVE )
+        icon = &m_iconMove;
+    else if ( action & GDK_ACTION_COPY )
+        icon = &m_iconCopy;
+    else
+        icon = &m_iconNone;
 
-    g_blockEventsOnDrag = FALSE;
+#ifndef __WXGTK3__
+    GdkBitmap *mask;
+    if ( icon->GetMask() )
+        mask = *icon->GetMask();
+    else
+        mask = NULL;
+
+    GdkPixmap *pixmap = icon->GetPixmap();
+
+    GdkColormap *colormap = gtk_widget_get_colormap( m_widget );
+    gtk_widget_push_colormap (colormap);
+#endif
+
+    m_iconWindow = gtk_window_new (GTK_WINDOW_POPUP);
+    gtk_widget_set_events (m_iconWindow, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
+    gtk_widget_set_app_paintable (m_iconWindow, TRUE);
+
+#ifdef __WXGTK3__
+    gtk_widget_set_visual(m_iconWindow, gtk_widget_get_visual(m_widget));
+#else
+    gtk_widget_pop_colormap ();
+#endif
+
+    gtk_widget_set_size_request (m_iconWindow, icon->GetWidth(), icon->GetHeight());
+    gtk_widget_realize (m_iconWindow);
+
+    g_signal_connect (m_iconWindow, "configure_event",
+                      G_CALLBACK (gtk_dnd_window_configure_callback), this);
+
+#ifdef __WXGTK3__
+    cairo_t* cr = gdk_cairo_create(gtk_widget_get_window(m_iconWindow));
+    icon->SetSourceSurface(cr, 0, 0);
+    cairo_pattern_t* pattern = cairo_get_source(cr);
+    gdk_window_set_background_pattern(gtk_widget_get_window(m_iconWindow), pattern);
+    cairo_destroy(cr);
+    cairo_surface_t* mask = NULL;
+    if (icon->GetMask())
+        mask = *icon->GetMask();
+    if (mask)
+    {
+        cairo_region_t* region = gdk_cairo_region_create_from_surface(mask);
+        gtk_widget_shape_combine_region(m_iconWindow, region);
+        cairo_region_destroy(region);
+    }
+#else
+    gdk_window_set_back_pixmap(gtk_widget_get_window(m_iconWindow), pixmap, false);
+
+    if (mask)
+        gtk_widget_shape_combine_mask (m_iconWindow, mask, 0, 0);
+#endif
+
+    gtk_drag_set_icon_widget( context, m_iconWindow, 0, 0 );
 }
 
-wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
+wxDragResult wxDropSource::DoDragDrop(int flags)
 {
-    wxASSERT_MSG( m_data, wxT("wxDragSource: no data") );
+    wxCHECK_MSG( m_data && m_data->GetFormatCount(), wxDragNone,
+                 wxT("Drop source: no data") );
+
+    // still in drag
+    if (g_blockEventsOnDrag)
+        return wxDragNone;
 
-    if (!m_data) 
-        return (wxDragResult) wxDragNone;
+    // don't start dragging if no button is down
+    if (g_lastButtonNumber == 0)
+        return wxDragNone;
 
-    if (m_data->GetFormatCount() == 0) 
-        return (wxDragResult) wxDragNone;
-       
-    g_blockEventsOnDrag = TRUE;
+    // we can only start a drag after a mouse event
+    if (g_lastMouseEvent == NULL)
+        return wxDragNone;
 
-    RegisterWindow();
+    GTKConnectDragSignals();
+    wxON_BLOCK_EXIT_OBJ0(*this, wxDropSource::GTKDisconnectDragSignals);
 
-    m_waiting = TRUE;
+    m_waiting = true;
+
+    GtkTargetList *target_list = gtk_target_list_new( NULL, 0 );
 
-    GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 );
-    
     wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
-    m_data->GetAllFormats( array, TRUE );
-    for (size_t i = 0; i < m_data->GetFormatCount(); i++)
+    m_data->GetAllFormats( array );
+    size_t count = m_data->GetFormatCount();
+    for (size_t i = 0; i < count; i++)
     {
         GdkAtom atom = array[i];
-       wxLogDebug( wxT("Supported atom %s"), gdk_atom_name( atom ) );
+        wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"),
+                   gdk_atom_name( atom ));
         gtk_target_list_add( target_list, atom, 0, 0 );
     }
     delete[] array;
 
-    GdkEventMotion event;
-    event.window = m_widget->window;
-    int x = 0;
-    int y = 0;
-    GdkModifierType state;
-    gdk_window_get_pointer( event.window, &x, &y, &state );
-    event.x = x;
-    event.y = y;
-    event.state = state;
-    event.time = GDK_CURRENT_TIME;
-
-    /* GTK wants to know which button was pressed which caused the dragging */
-    int button_number = 0;
-    if (event.state & GDK_BUTTON1_MASK) button_number = 1;
-    else if (event.state & GDK_BUTTON2_MASK) button_number = 2;
-    else if (event.state & GDK_BUTTON3_MASK) button_number = 3;
-
-#if wxUSE_THREADS
-    /* disable GUI threads */
-    wxapp_uninstall_thread_wakeup();
-#endif
+    int allowed_actions = GDK_ACTION_COPY;
+    if ( flags & wxDrag_AllowMove )
+        allowed_actions |= GDK_ACTION_MOVE;
 
-    /* don't start dragging if no button is down */
-    if (button_number)
+    // VZ: as we already use g_blockEventsOnDrag it shouldn't be that bad
+    //     to use a global to pass the flags to the drop target but I'd
+    //     surely prefer a better way to do it
+    gs_flagsForDrag = flags;
+
+    m_retValue = wxDragCancel;
+
+    GdkDragContext *context = gtk_drag_begin( m_widget,
+                target_list,
+                (GdkDragAction)allowed_actions,
+                g_lastButtonNumber,  // number of mouse button which started drag
+                (GdkEvent*) g_lastMouseEvent );
+
+    if ( !context )
     {
-        GdkDragContext *context = gtk_drag_begin( m_widget,
-                                              target_list,
-                                              GDK_ACTION_COPY,
-                                              button_number,  /* number of mouse button which started drag */
-                                              (GdkEvent*) &event );
-
-        wxMask *mask = m_goIcon.GetMask();
-        GdkBitmap *bm = (GdkBitmap *) NULL;
-        if (mask) bm = mask->GetBitmap();
-        GdkPixmap *pm = m_goIcon.GetPixmap();
-
-        gtk_drag_set_icon_pixmap( context,
-                                  gtk_widget_get_colormap( m_widget ),
-                                  pm,
-                                  bm,
-                                  0,
-                                  0 );
-
-        while (m_waiting) gtk_main_iteration();;
+        // this can happen e.g. if gdk_pointer_grab() failed
+        return wxDragError;
     }
 
-#if wxUSE_THREADS
-    /* re-enable GUI threads */
-    wxapp_install_thread_wakeup();
-#endif
+    m_dragContext = context;
 
-    g_blockEventsOnDrag = FALSE;
+    PrepareIcon( allowed_actions, context );
 
-    UnregisterWindow();
+    while (m_waiting)
+        gtk_main_iteration();
+
+    g_signal_handlers_disconnect_by_func (m_iconWindow,
+                                          (gpointer) gtk_dnd_window_configure_callback, this);
 
     return m_retValue;
 }
 
-void wxDropSource::RegisterWindow()
+void wxDropSource::GTKConnectDragSignals()
 {
-    if (!m_widget) return;
+    if (!m_widget)
+        return;
+
+    g_blockEventsOnDrag = true;
 
-    gtk_signal_connect( GTK_OBJECT(m_widget), "drag_data_get",
-                      GTK_SIGNAL_FUNC (source_drag_data_get), (gpointer) this);
-    gtk_signal_connect (GTK_OBJECT(m_widget), "drag_data_delete",
-                      GTK_SIGNAL_FUNC (source_drag_data_delete),  (gpointer) this );
-    gtk_signal_connect (GTK_OBJECT(m_widget), "drag_begin",
-                      GTK_SIGNAL_FUNC (source_drag_begin),  (gpointer) this );
-    gtk_signal_connect (GTK_OBJECT(m_widget), "drag_end",
-                      GTK_SIGNAL_FUNC (source_drag_end),  (gpointer) this );
+    g_signal_connect (m_widget, "drag_data_get",
+                      G_CALLBACK (source_drag_data_get), this);
+    g_signal_connect (m_widget, "drag_end",
+                      G_CALLBACK (source_drag_end), this);
 
 }
 
-void wxDropSource::UnregisterWindow()
+void wxDropSource::GTKDisconnectDragSignals()
 {
-    if (!m_widget) return;
+    if (!m_widget)
+        return;
+
+    g_blockEventsOnDrag = false;
 
-    gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
-                      GTK_SIGNAL_FUNC(source_drag_data_get), (gpointer) this );
-    gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
-                      GTK_SIGNAL_FUNC(source_drag_data_delete), (gpointer) this );
-    gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
-                      GTK_SIGNAL_FUNC(source_drag_begin), (gpointer) this );
-    gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
-                      GTK_SIGNAL_FUNC(source_drag_end), (gpointer) this );
+    g_signal_handlers_disconnect_by_func (m_widget,
+                                          (gpointer) source_drag_data_get,
+                                          this);
+    g_signal_handlers_disconnect_by_func (m_widget,
+                                          (gpointer) source_drag_end,
+                                          this);
 }
 
 #endif
-
       // wxUSE_DRAG_AND_DROP