L_BM_INTENSITYDETECT
Send this message to filter an L_BITMAPCLASS window's bitmap to detect colors in a specified intensity range.
Intensity levels range from 0 to 255 for each color plane (red, green, and blue). This function processes each plane separately. If a value falls within the range, it is raised to 255, and if it falls outside the range, it is lowered to 0.
Parameter |
Description |
wParam |
Contains the wParam parameter of the WM_COMMAND message and specifies the child-window ID. |
lParam |
The low order of lParam should specify the lowest intensity to detect. The high order word should specify the highest intensity to detect. |