From Valeri Fine: - Force painting of the  TCanvas background    for the embedded object at the time of    the Qt GUI instantiation to avoid the annoying    "black widget" 
From Valeri Fine:
- Force painting of the  TCanvas background 
  for the embedded object at the time of 
  the Qt GUI instantiation to avoid the annoying 
  "black widget" 

- Remove the redundant Qt 3.x CPP flag.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@26999 27541ba8-7e3a-0410-8455-c3a389f83636

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