Rosetta Code

Color of a screen pixel: Difference between revisions

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Color of a screen pixel (view source)

Revision as of 06:27, 2 July 2010

57 bytes added ,  13 years ago
m
→‎{{header|C}}: spaces instead of tabs
(added C)
m (→‎{{header|C}}: spaces instead of tabs)
Line 16:
{{works with|Windows}}
<lang c>COLORREF getColorAtCursor(void) {
POINT p;
COLORREF color;
HDC hDC;
BOOL b;
 
// Get the device context for the screen
hDC = GetDC(NULL);
if (hDC == NULL)
return CLR_INVALID;
 
// Get the current cursor position
b = GetCursorPos(&p);
if (!b)
return CLR_INVALID;
 
// Retrieve the color at that position
color = GetPixel(hDC, p.x, p.y);
 
// Release the device context again
ReleaseDC(GetDesktopWindow(), hDC);
 
return color;
}</lang>
 
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