![]() So to reach my goal to guarantee our customers a reliable reaction time measurement, regardless of the OS and the capabilities of the video adapter, choosing DirectX9 seemed to be the best solution. It took me nearly a whole day to figure out that the reason was the video card not supporting DirectX11. To compile and link a DirectDraw application, you need the DDRAW.DLL, DDRAW.H, and you need to create an import library from DDRAW.DLL with the IMPLIB.EXE utility. ![]() The SDK provides a descent help file, and excellent example programs. ![]() The middle of the screen worked flawlessly on my Windows7-PC but did not work on the Windows8 machine. This is currently available only on MSDN level II or above, and with MS Visual C++ 4.1. I considered the risk that an upcoming new Windows could suddenly no longer support DirectX9 and I honestly tried to use DirectX11 - but I made the experience that a simple sample program that draws an ordinary shaded triangle in
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