Enabling the use of masks for wxGTK in some of the demos

wxWindow.GetHandle returns the X-Window instead of the GtkWidget
pointer so the X-Window can be given to other Python modules such as
VTK.

wxPython.lib.vtk updated to get the window handle at widget creation
instead of in the constructor.

other updates


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5147 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/wxPython/demo/wxVTKRenderWindow.py

@@ -10,7 +10,8 @@ except ImportError:
 
 def runTest(frame, nb, log):
     if haveVTK:
-        win = vtk.wxVTKRenderWindow(nb, -1)
+        f = wxFrame(frame, -1, "wxVTKRenderWindow", size=(450, 300))
+        win = vtk.wxVTKRenderWindow(f, -1)
 
         # Get the render window
         renWin = win.GetRenderWindow()
@@ -38,7 +39,9 @@ def runTest(frame, nb, log):
         scalarBar.SetHeight(0.17)
         ren.AddActor2D(scalarBar)
 
-        return win
+        f.Show(true)
+        frame.otherWin = f
+        return None
 
 
     else: