]> git.saurik.com Git - wxWidgets.git/blobdiff - src/gtk/dnd.cpp
added WXMAC default font sizes
[wxWidgets.git] / src / gtk / dnd.cpp
index 723995103ec5d2d2d0d2f2fa88bda40c749842e4..f1b6bf43e616fbdc12ddc583e0cd1d7e74dc9763 100644 (file)
 #include "wx/intl.h"
 #include "wx/utils.h"
 
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
-#include "gdk/gdkprivate.h"
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkprivate.h>
 
-#include "gtk/gtkdnd.h"
-#include "gtk/gtkselection.h"
+#include <gtk/gtkdnd.h>
+#include <gtk/gtkselection.h>
 
 //-----------------------------------------------------------------------------
 // idle system
@@ -54,47 +54,6 @@ extern bool g_blockEventsOnDrag;
 // 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 */
@@ -188,8 +147,11 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
        this is only valid for the duration of this call */
     drop_target->SetDragContext( context );
 
-    /* TODO: what should be the default behaviour? Copy or move? */
-    wxDragResult result = wxDragMove;
+    wxDragResult result;
+    if ( context->suggested_action == GDK_ACTION_COPY )
+        result = wxDragCopy;
+    else
+        result = wxDragMove;
 
     if (drop_target->m_firstMotion)
     {
@@ -202,12 +164,17 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
         result = drop_target->OnDragOver( x, y, result );
     }
 
-    /* we don't yet handle which "actions" (i.e. copy or move)
-       the target accepts. so far we simply accept the
-       suggested action. TODO. */
-    bool ret = result != wxDragNone;
+    bool ret = wxIsDragResultOk( result );
     if (ret)
-        gdk_drag_status( context, context->suggested_action, time );
+    {
+        GdkDragAction action;
+        if (result == wxDragCopy)
+            action = GDK_ACTION_COPY;
+        else
+            action = GDK_ACTION_MOVE;
+
+        gdk_drag_status( context, action, time );
+    }
 
     /* after this, invalidate the drop_target's GdkDragContext */
     drop_target->SetDragContext( (GdkDragContext*) NULL );
@@ -254,12 +221,17 @@ static gboolean target_drag_drop( GtkWidget *widget,
        this is only valid for the duration of this call */
     drop_target->SetDragTime( time );
 
+/*
+    wxDragResult result = wxDragMove;
+    if (context->suggested_action == GDK_ACTION_COPY) result = wxDragCopy;
+*/
+
     bool ret = drop_target->OnDrop( x, y );
 
     if (!ret)
     {
-        wxLogDebug( wxT( "Drop target: OnDrop returned TRUE") );
-       
+        wxLogDebug( wxT( "Drop target: OnDrop returned FALSE") );
+
         /* cancel the whole thing */
         gtk_drag_finish( context,
                           FALSE,        /* no success */
@@ -269,15 +241,20 @@ static gboolean target_drag_drop( GtkWidget *widget,
     else
     {
         wxLogDebug( wxT( "Drop target: OnDrop returned TRUE") );
-       
+
 #if wxUSE_THREADS
         /* disable GUI threads */
         wxapp_uninstall_thread_wakeup();
 #endif
 
         GdkAtom format = drop_target->GetMatchingPair();
-       wxASSERT( format );
-       
+        wxASSERT( format );
+
+/*
+        GdkDragAction action = GDK_ACTION_MOVE;
+        if (result == wxDragCopy) action == GDK_ACTION_COPY;
+        context->action = action;
+*/
         /* this should trigger an "drag_data_received" event */
         gtk_drag_get_data( widget,
                            context,
@@ -320,7 +297,6 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
     /* Owen Taylor: "call gtk_drag_finish() with
        success == TRUE" */
 
-
     if ((data->length <= 0) || (data->format != 8))
     {
         /* negative data length and non 8-bit data format
@@ -331,22 +307,28 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
     }
 
     wxLogDebug( 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 );
 
-    if (drop_target->OnData( x, y ))
+    wxDragResult result;
+    if ( context->suggested_action == GDK_ACTION_COPY )
+        result = wxDragCopy;
+    else
+        result = wxDragMove;
+
+    if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) )
     {
         wxLogDebug( wxT( "Drop target: OnData returned TRUE") );
-       
+
         /* tell GTK that data transfer was successfull */
         gtk_drag_finish( context, TRUE, FALSE, time );
     }
     else
     {
         wxLogDebug( wxT( "Drop target: OnData returned FALSE") );
-       
+
         /* tell GTK that data transfer was not successfull */
         gtk_drag_finish( context, FALSE, FALSE, time );
     }
@@ -359,8 +341,8 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
 // wxDropTarget
 //----------------------------------------------------------------------------
 
-wxDropTarget::wxDropTarget( wxDataObject *data ) 
-  : wxDropTargetBase( data )
+wxDropTarget::wxDropTarget( wxDataObject *data )
+            : wxDropTargetBase( data )
 {
     m_firstMotion = TRUE;
     m_dragContext = (GdkDragContext*) NULL;
@@ -373,9 +355,14 @@ wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
                                        wxCoord WXUNUSED(y),
                                        wxDragResult def )
 {
-    if (!m_dataObject)
-        return FALSE;
-       
+    // GetMatchingPair() checks for m_dataObject too, no need to do it here
+
+    // disable the debug message from GetMatchingPair() - there are too many
+    // of them otherwise
+#ifdef __WXDEBUG__
+    wxLogNull noLog;
+#endif // Debug
+
     return (GetMatchingPair() != (GdkAtom) 0) ? def : wxDragNone;
 }
 
@@ -383,41 +370,42 @@ bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
 {
     if (!m_dataObject)
         return FALSE;
-       
+
     return (GetMatchingPair() != (GdkAtom) 0);
 }
 
-bool wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
+wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
+                                   wxDragResult def )
 {
     if (!m_dataObject)
-        return FALSE;
-       
+        return wxDragNone;
+
     if (GetMatchingPair() == (GdkAtom) 0)
-        return FALSE;
-       
-    return GetData();
+        return wxDragNone;
+
+    return GetData() ? def : wxDragNone;
 }
 
 GdkAtom wxDropTarget::GetMatchingPair()
 {
-    if (!m_dataObject) 
+    if (!m_dataObject)
         return (GdkAtom) 0;
 
-    if (!m_dragContext) 
+    if (!m_dragContext)
         return (GdkAtom) 0;
 
     GList *child = m_dragContext->targets;
     while (child)
     {
         GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data);
-       wxDataFormat format( formatAtom );
+        wxDataFormat format( formatAtom );
 
 #ifdef __WXDEBUG__
-        char *name = gdk_atom_name( formatAtom );
-        if (name) wxLogDebug( "Drop target: drag has format: %s", name );
-#endif
+        wxLogDebug( wxT("Drop target: drag has format: %s"), format.GetId().c_str() );
+#endif // Debug
+
         if (m_dataObject->IsSupportedFormat( format ))
-           return formatAtom;
+            return formatAtom;
 
         child = child->next;
     }
@@ -427,31 +415,17 @@ GdkAtom wxDropTarget::GetMatchingPair()
 
 bool wxDropTarget::GetData()
 {
-    if (!m_dragData) 
+    if (!m_dragData)
         return FALSE;
 
-    if (!m_dataObject) 
+    if (!m_dataObject)
         return FALSE;
 
     wxDataFormat dragFormat( m_dragData->target );
-    
+
     if (!m_dataObject->IsSupportedFormat( dragFormat ))
         return FALSE;
 
-    if (dragFormat.GetType() == wxDF_TEXT)
-    {
-        wxTextDataObject *text_object = (wxTextDataObject*)m_dataObject;
-        text_object->SetText( (const char*)m_dragData->data );
-       return TRUE;
-    }
-
-    if (dragFormat.GetType() == wxDF_FILENAME)
-    {
-        wxFileDataObject *file_object = (wxFileDataObject*)m_dataObject;
-        file_object->SetData( 0, (const char*)m_dragData->data );
-       return TRUE;
-    }
-
     m_dataObject->SetData( dragFormat, (size_t)m_dragData->length, (const void*)m_dragData->data );
 
     return TRUE;
@@ -509,48 +483,13 @@ void wxDropTarget::RegisterWidget( GtkWidget *widget )
                       GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
 }
 
-// ----------------------------------------------------------------------------
-// wxTextDropTarget
-// ----------------------------------------------------------------------------
-
-wxTextDropTarget::wxTextDropTarget()
-                : wxDropTarget(new wxTextDataObject)
-{
-}
-
-bool wxTextDropTarget::OnData(wxCoord x, wxCoord y)
-{
-    if ( !GetData() )
-        return FALSE;
-
-    return OnDropText(x, y, ((wxTextDataObject *)m_dataObject)->GetText());
-}
-
-// ----------------------------------------------------------------------------
-// wxFileDropTarget
-// ----------------------------------------------------------------------------
-
-wxFileDropTarget::wxFileDropTarget()
-                : wxDropTarget(new wxFileDataObject)
-{
-}
-
-bool wxFileDropTarget::OnData(wxCoord x, wxCoord y)
-{
-    if ( !GetData() )
-        return FALSE;
-
-    return OnDropFiles(x, y,
-                       ((wxFileDataObject *)m_dataObject)->GetFilenames());
-}
-
 //----------------------------------------------------------------------------
 // "drag_data_get"
 //----------------------------------------------------------------------------
 
 static void
 source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
-                       GdkDragContext     *context,
+                       GdkDragContext     *WXUNUSED(context),
                        GtkSelectionData   *selection_data,
                        guint               WXUNUSED(info),
                        guint               WXUNUSED(time),
@@ -559,41 +498,41 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
     if (g_isIdle) wxapp_install_idle_handler();
 
     wxDataFormat format( selection_data->target );
-    
-    wxLogDebug( wxT("Drop source: format requested: %s"), format.GetId().c_str() );
 
-    drop_source->m_retValue = wxDragCancel;
+    wxLogDebug( wxT("Drop source: format requested: %s"), format.GetId().c_str() );
     
+    drop_source->m_retValue = wxDragCancel;
+
     wxDataObject *data = drop_source->GetDataObject();
     
     if (!data)
     {
         wxLogDebug( wxT("Drop source: no data object") );
-       return;
+        return;
     }
 
     if (!data->IsSupportedFormat(format))
     {
         wxLogDebug( wxT("Drop source: unsupported format") );
-       return;
+        return;
     }
 
     if (data->GetDataSize(format) == 0)
     {
         wxLogDebug( wxT("Drop source: empty data") );
-       return;
+        return;
     }
-    
+
     size_t size = data->GetDataSize(format);
 
 //  printf( "data size: %d.\n", (int)data_size );
 
     guchar *d = new guchar[size];
-    
+
     if (!data->GetDataHere( format, (void*)d ))
     {
         delete[] d;
-       return;
+        return;
     }
 
 #if wxUSE_THREADS
@@ -613,9 +552,6 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
 #endif
 
     delete[] d;
-    
-    /* so far only copy, no moves. TODO. */
-    drop_source->m_retValue = wxDragCopy;
 }
 
 //----------------------------------------------------------------------------
@@ -624,13 +560,12 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
 
 static void source_drag_data_delete( GtkWidget          *WXUNUSED(widget),
                                      GdkDragContext     *WXUNUSED(context),
-                                     wxDropSource       *drop_source )
+                                     wxDropSource       *WXUNUSED(drop_source) )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
+    if (g_isIdle) 
+        wxapp_install_idle_handler();
 
-//  printf( "Delete the data!\n" );
-
-    drop_source->m_retValue = wxDragMove;
+    // printf( "Drag source: drag_data_delete\n" );
 }
 
 //----------------------------------------------------------------------------
@@ -641,9 +576,10 @@ static void source_drag_begin( GtkWidget          *WXUNUSED(widget),
                                GdkDragContext     *WXUNUSED(context),
                                wxDropSource       *WXUNUSED(drop_source) )
 {
-    if (g_isIdle) wxapp_install_idle_handler();
+    if (g_isIdle) 
+        wxapp_install_idle_handler();
 
-//  printf( "drag_begin.\n" );
+    // printf( "Drag source: drag_begin.\n" );
 }
 
 //----------------------------------------------------------------------------
@@ -656,71 +592,116 @@ static void source_drag_end( GtkWidget          *WXUNUSED(widget),
 {
     if (g_isIdle) wxapp_install_idle_handler();
 
-//  printf( "drag_end.\n" );
+    // printf( "Drag source: drag_end.\n" );
 
     drop_source->m_waiting = FALSE;
 }
 
+//-----------------------------------------------------------------------------
+// "configure_event" from m_iconWindow
+//-----------------------------------------------------------------------------
+
+static gint
+gtk_dnd_window_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDropSource *source )
+{
+    if (g_isIdle)
+        wxapp_install_idle_handler();
+
+    wxDragResult action = wxDragNone;
+    if (source->m_dragContext->action == GDK_ACTION_COPY) action = wxDragCopy;
+    if (source->m_dragContext->action == GDK_ACTION_MOVE) action = wxDragMove;
+
+    source->GiveFeedback( action );
+
+    return 0;
+}
+
 //---------------------------------------------------------------------------
 // wxDropSource
 //---------------------------------------------------------------------------
 
-wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop )
+wxDropSource::wxDropSource( wxWindow *win, const wxIcon &icon )
 {
-    g_blockEventsOnDrag = TRUE;
     m_waiting = TRUE;
 
+    m_iconWindow = (GtkWidget*) NULL;
+
     m_window = win;
     m_widget = win->m_widget;
     if (win->m_wxwindow) m_widget = win->m_wxwindow;
 
     m_retValue = wxDragCancel;
 
-    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 );
+    m_icon = icon;
+    if (wxNullIcon == icon) m_icon = wxIcon( page_xpm );
 }
 
-wxDropSource::wxDropSource( wxDataObject& data, wxWindow *win,
-                            const wxIcon &go, const wxIcon &stop )
+wxDropSource::wxDropSource( wxDataObject& data, wxWindow *win, const wxIcon &icon )
 {
     m_waiting = TRUE;
-    
+
     SetData( data );
 
+    m_iconWindow = (GtkWidget*) NULL;
+
     m_window = win;
     m_widget = win->m_widget;
     if (win->m_wxwindow) m_widget = win->m_wxwindow;
-    m_retValue = wxDragCancel;
 
-    m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
-    m_goaheadCursor = wxCursor( wxCURSOR_HAND );
+    m_retValue = wxDragCancel;
 
-    m_goIcon = go;
-    if (wxNullIcon == go) m_goIcon = wxIcon( page_xpm );
-    m_stopIcon = stop;
-    if (wxNullIcon == stop) m_stopIcon = wxIcon( gv_xpm );
+    m_icon = icon;
+    if (wxNullIcon == icon) m_icon = wxIcon( page_xpm );
 }
 
 wxDropSource::~wxDropSource()
 {
-    g_blockEventsOnDrag = FALSE;
 }
 
-wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
+void wxDropSource::PrepareIcon( int hot_x, int hot_y, GdkDragContext *context )
+{
+    GdkBitmap *mask = (GdkBitmap *) NULL;
+    if (m_icon.GetMask()) mask = m_icon.GetMask()->GetBitmap();
+    GdkPixmap *pixmap = m_icon.GetPixmap();
+
+    gint width,height;
+    gdk_window_get_size (pixmap, &width, &height);
+
+    GdkColormap *colormap = gtk_widget_get_colormap( m_widget );
+    gtk_widget_push_visual (gdk_colormap_get_visual (colormap));
+    gtk_widget_push_colormap (colormap);
+
+    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 (GTK_WIDGET (m_iconWindow), TRUE);
+
+    gtk_widget_pop_visual ();
+    gtk_widget_pop_colormap ();
+
+    gtk_widget_set_usize (m_iconWindow, width, height);
+    gtk_widget_realize (m_iconWindow);
+
+    gtk_signal_connect( GTK_OBJECT(m_iconWindow), "configure_event",
+        GTK_SIGNAL_FUNC(gtk_dnd_window_configure_callback), (gpointer)this );
+
+    gdk_window_set_back_pixmap (m_iconWindow->window, pixmap, FALSE);
+
+    if (mask)
+        gtk_widget_shape_combine_mask (m_iconWindow, mask, 0, 0);
+
+    gtk_drag_set_icon_widget( context, m_iconWindow, hot_x, hot_y );
+}
+
+wxDragResult wxDropSource::DoDragDrop( bool allowMove )
 {
-    wxASSERT_MSG( m_data, wxT("wxDragSource: no data") );
+    wxASSERT_MSG( m_data, wxT("Drop source: no data") );
 
-    if (!m_data) 
+    if (!m_data)
         return (wxDragResult) wxDragNone;
 
-    if (m_data->GetFormatCount() == 0) 
+    if (m_data->GetFormatCount() == 0)
         return (wxDragResult) wxDragNone;
-       
+
     g_blockEventsOnDrag = TRUE;
 
     RegisterWindow();
@@ -728,13 +709,13 @@ wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
     m_waiting = TRUE;
 
     GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 );
-    
+
     wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
     m_data->GetAllFormats( array );
     for (size_t i = 0; i < m_data->GetFormatCount(); i++)
     {
         GdkAtom atom = array[i];
-       wxLogDebug( wxT("Supported atom %s"), gdk_atom_name( atom ) );
+        wxLogDebug( wxT("Drop source: Supported atom %s"), gdk_atom_name( atom ) );
         gtk_target_list_add( target_list, atom, 0, 0 );
     }
     delete[] array;
@@ -748,7 +729,7 @@ wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
     event.x = x;
     event.y = y;
     event.state = state;
-    event.time = GDK_CURRENT_TIME;
+    event.time = (guint32)GDK_CURRENT_TIME;
 
     /* GTK wants to know which button was pressed which caused the dragging */
     int button_number = 0;
@@ -764,25 +745,24 @@ wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
     /* don't start dragging if no button is down */
     if (button_number)
     {
+        GdkDragAction action = GDK_ACTION_COPY;
+       if (allowMove) action = (GdkDragAction)(GDK_ACTION_MOVE|GDK_ACTION_COPY);
         GdkDragContext *context = gtk_drag_begin( m_widget,
                                               target_list,
-                                              GDK_ACTION_COPY,
+                                             action,
                                               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();
+        m_dragContext = context;
 
-        gtk_drag_set_icon_pixmap( context,
-                                  gtk_widget_get_colormap( m_widget ),
-                                  pm,
-                                  bm,
-                                  0,
-                                  0 );
+        PrepareIcon( 0, 0, context );
 
-        while (m_waiting) gtk_main_iteration();;
+        while (m_waiting) gtk_main_iteration();
+       
+       if (context->action == GDK_ACTION_COPY)
+            m_retValue = wxDragCopy;
+       if (context->action == GDK_ACTION_MOVE)
+            m_retValue = wxDragMove;
     }
 
 #if wxUSE_THREADS
@@ -800,7 +780,7 @@ wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
 void wxDropSource::RegisterWindow()
 {
     if (!m_widget) return;
-
+    
     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",
@@ -827,5 +807,4 @@ void wxDropSource::UnregisterWindow()
 }
 
 #endif
-
       // wxUSE_DRAG_AND_DROP