X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/07e497070e5666bf25e0f3616b853399b8b86c48..6890c56e85899e50e18cdb6a4ed0905eddb396cc:/src/gtk/toplevel.cpp

diff --git a/src/gtk/toplevel.cpp b/src/gtk/toplevel.cpp
index 508e7d5ee6..bf4cec07be 100644
--- a/src/gtk/toplevel.cpp
+++ b/src/gtk/toplevel.cpp
@@ -1325,7 +1325,7 @@ static Window wxGetTopmostWindowX11(Display *dpy, Window child)
 
 bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
 {
-    if (!m_widget || !m_widget->window || !CanSetTransparent())
+    if (!m_widget || !m_widget->window)
         return false;
 
     Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
@@ -1349,8 +1349,22 @@ bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
 
 bool wxTopLevelWindowGTK::CanSetTransparent()
 {
+#if GTK_CHECK_VERSION(2,10,0)
+    if (!gtk_check_version(2,10,0))
+    {
+        if (gtk_widget_is_composited (m_widget))
+            return true;
+    }
+    else
+#endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
+    {
+        return false;
+    }
+
+#if 0 // Don't be optimistic here for the sake of wxAUI
     int opcode, event, error;
     // Check for the existence of a RGBA visual instead?
     return XQueryExtension(gdk_x11_get_default_xdisplay (),
                            "Composite", &opcode, &event, &error);
+#endif
 }