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You are reading a General forum message. Possible Solution for TDx_Draw::Create Problem Author: Jeff Young Date Posted: 2004-03-09 08:38:11 My computer (running Windows 2000 and BCB6) seems to be one of the ones afflicted with the TDx_Draw::Create problem that is discussed in FAQ and elsewhere in this forum. I tried messing around with the component source a bit and I believe I may have found a workaround. I tried compiling Example 1and immediately hit the bug when the line Dx_Draw1->Create(NULL); is executed. After trying with some other example programs and thrashing around a bit, I tried modifying the component source in TDx_Draw.cpp with some alternate methods of creating and initializing the DirectDraw interface. The apporach that works is as follows: In TDx_Draw.CPP in the function TDx_Draw::Create replace: fErrorValue = DirectDrawCreateEx( pGuid, (LPVOID*) &fLPDIRECTDRAW7;, IID_IDirectDraw7, NULL); with CoInitialize(NULL); if (FAILED(CoCreateInstance(CLSID_DirectDraw, NULL, CLSCTX_ALL, IID_IDirectDraw7, (void **)&fLPDIRECTDRAW7;))) { ShowMessage("Failed to create DD7 Instance "); return false; } else { if (FAILED(IDirectDraw7_Initialize(fLPDIRECTDRAW7,NULL))) { ShowMessage("Failed to initialize DD7 instance"); return false; } } CoUninitialize(); I still want to clean up the error handling and get rid of the ShowMessages, but when I made this change and rebuilt TDx_Draw3D_Library I could now compile and run the example programs successfully . Woohoo! Hope this is useful for others having this problem. Jeff REPLY TO THIS MESSAGE? Top You can post a reply to this General message using the form below: |
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