Splits the command buffers into common commands...

tests/common/win/testing_common.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 91 matching lines @@
   ::SetUnhandledExceptionFilter(LocalUnhandledExceptionFilter);
 
   std::string error;
   if (!o3d::RendererInstallCheck(&error)) {
     return false;
   }
   WNDCLASSEX wc = {0};
 
   wc.lpszClassName = L"MY_WINDOWS_CLASS";
   wc.cbSize = sizeof(WNDCLASSEX);
-  wc.style = CS_HREDRAW | CS_VREDRAW;
+  wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
   wc.lpfnWndProc = ::WindowProc;
   wc.cbClsExtra = 0;
   wc.cbWndExtra = 0;
   wc.hInstance = instance;
   wc.hIcon = ::LoadIcon(instance, IDI_APPLICATION);
   wc.hIconSm = NULL;
   wc.hCursor = ::LoadCursor(instance, IDC_ARROW);
   wc.hbrBackground = static_cast<HBRUSH>(::GetStockObject(BLACK_BRUSH));
   wc.lpszMenuName = NULL;
 
@@ skipping 115 matching lines @@
   delete g_renderer;
   g_renderer = NULL;
 
   delete display_window;
   g_display_window = NULL;
   g_program_path = NULL;
   g_program_name = NULL;
 
   return ret;
 }