- From Axel: On a Windows dual core machine, the WaitPrimitive call returns   immediately. The reason is that the histogram is not drawn yet completely    when WaitPrimitive is entered, so "oldlast" and "obj" are immediately    different. Adding the line:      gSystem->ProcessEvents();   before:      TObject *oldlast = gPad->GetListOfPrimitives()->Last();   makes sure the list of primitives has been completed..
- From Axel: On a Windows dual core machine, the WaitPrimitive call returns
  immediately. The reason is that the histogram is not drawn yet completely 
  when WaitPrimitive is entered, so "oldlast" and "obj" are immediately 
  different. Adding the line:
     gSystem->ProcessEvents();
  before:
     TObject *oldlast = gPad->GetListOfPrimitives()->Last();
  makes sure the list of primitives has been completed..


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@22269 27541ba8-7e3a-0410-8455-c3a389f83636

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