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GetPixel function returns CLR_INVALID
Hi, I am trying to use GDI GetPixel function. I first get the DC using hdc = GetDC(hWnd); then call GetPixel(hdc,x,y); function. However GetPixel returns -1 which obviously shows that GetPixel cannot read from the dc. I found that I should use GetDeviceCaps to check whether the dc is capable of...- smoothie1248
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- Forum: Microsoft: Visual C++
