The GetPixel function retrieves the red, green, blue (RGB) color value of the pixel at the specified coordinates.
COLORREF GetPixel(
| HDC hdc, | // handle of device context |
| int XPos, | // x-coordinate of pixel |
| int nYPos | // y-coordinate of pixel |
| ); |
Parameters
hdc
Identifies the device context.
nXPos
Specifies the logical x-coordinate of the pixel to be examined.
nYPos
Specifies the logical y-coordinate of the pixel to be examined.
Return Values
If the function succeeds, the return value is an RGB value. If the pixel is outside of the current clipping region, the return value is CLR_INVALID.
Remarks
The pixel must be within the boundaries of the current clipping region.
Not all devices support GetPixel. An application should call GetDeviceCaps to determine whether a specified device supports this function.
See Also