This is a discussion on GetPixel Problem within the Windows Programming forums, part of the Platform Specific Boards category; PHP Code: HDC bitmapDC ; HBITMAP bitmapHandle ; COLORREF bmpSample ; bitmapHandle =( HBITMAP ) LoadImage ( 0 , "e:\mytestsample.bmp" , IMAGE_BITMAP ...
I get a 9 digit value for bmpSample lol.PHP Code:HDC bitmapDC;
HBITMAP bitmapHandle;
COLORREF bmpSample;
bitmapHandle=(HBITMAP)LoadImage(0,"e:\\mytestsample.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
bitmapDC = GetDC((HWND)bitmapHandle);
bmpSample = GetPixel(bitmapDC, 23, 31);
cout << "aaa " << bmpSample << '\n';
this question belongs on the windows board...
// bitmapDC = GetDC((HWND)bitmapHandle);
first of all, why are you casting an HBITMAP to HWND? their completely incompatible types. you need to create a compatible device context with the one you'll be drawing to (in this case, the screen), then select the bitmap into it.
Code:HDC sdc = GetDC(NULL); // ie: the screen HDC cdc = CreateCompatibleDC(sdc); SelectObject(cdc, bmp);
Code:int main(void){srand(time(0));for(double l=rand(),l0=0,l00=0;;l0+=0.1){for(double l000=0;l000 <1;l000+=.001,l+=((double)rand()/RAND_MAX)/0x64,l00+=((sin(l*0x8*atan(l0)*l000-(l0*0x8*atan (l)))*0.5)+0.5)){l00-=floor(l00);for(size_t l0000=0,l00000=(size_t)(0x50*(l00));l0000<l00000;++l0000 )putchar(0x20);putchar(0x61+(int)((double)rand()/RAND_MAX*0x1a));putchar('\n');}}return 0;}
Moved to the Windows board.
Maybe if you can put bitmapHandle in a static control..you can use correctly GetPixel
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