Win32: fix transparency on Win7 taskbar buttons

modules/gui/qt4/Modules.am

@@ -183,6 +183,10 @@ DEPS_res = \
 	pixmaps/types/type_node.png \
 	pixmaps/types/type_playlist.png \
 	pixmaps/types/type_unknown.xpm \
+	pixmaps/win7/win7thumbnail_prev.png \
+	pixmaps/win7/win7thumbnail_next.png \
+	pixmaps/win7/win7thumbnail_play.png \
+	pixmaps/win7/win7thumbnail_pause.png \
 	pixmaps/update.png \
 	pixmaps/lock.png
 

modules/gui/qt4/main_interface_win32.cpp

@@ -87,17 +87,17 @@ void MainInterface::createTaskBarButtons()
     {
         p_taskbl->vt->HrInit(p_taskbl);
 
-        if(himl = ImageList_Create( 15, //cx
-                        18, //cy
-                        ILC_COLOR,//flags
+        if(himl = ImageList_Create( 20, //cx
+                        20, //cy
+                        ILC_COLOR32,//flags
                         4,//initial nb of images
                         0//nb of images that can be added
                         ))
         {
-            QPixmap img   = QPixmap(":/toolbar/previous_b");
-            QPixmap img2  = QPixmap(":/toolbar/pause_b");
-            QPixmap img3  = QPixmap(":/toolbar/play_b");
-            QPixmap img4  = QPixmap(":/toolbar/next_b");
+            QPixmap img   = QPixmap(":/win7/prev");
+            QPixmap img2  = QPixmap(":/win7/pause");
+            QPixmap img3  = QPixmap(":/win7/play");
+            QPixmap img4  = QPixmap(":/win7/next");
             QBitmap mask  = img.createMaskFromColor(Qt::transparent);
             QBitmap mask2 = img2.createMaskFromColor(Qt::transparent);
             QBitmap mask3 = img3.createMaskFromColor(Qt::transparent);
@@ -156,7 +156,7 @@ bool MainInterface::winEvent ( MSG * msg, long * result )
 {
     if (msg->message == taskbar_wmsg)
     {
-        //We received the taskbarbuttoncreated, now we can really create th buttons
+        //We received the "taskbarbuttoncreated" message, now we can really create the buttons
         createTaskBarButtons();
     }
 

modules/gui/qt4/vlc.qrc

@@ -109,4 +109,10 @@
         <file alias="sout" >pixmaps/prefs/advprefs_sout.png</file>
         <file alias="video" >pixmaps/prefs/advprefs_video.png</file>
     </qresource>
+    <qresource prefix="/win7" >
+        <file alias="prev" >pixmaps/win7/win7thumbnail_prev.png</file>
+        <file alias="next" >pixmaps/win7/win7thumbnail_next.png</file>
+        <file alias="play" >pixmaps/win7/win7thumbnail_play.png</file>
+        <file alias="pause" >pixmaps/win7/win7thumbnail_pause.png</file>
+    </qresource>
 </RCC>