L_BM_GRAYSCALE
Send this message to change an L_BITMAPCLASS window's bitmap to grayscale.
|
Parameter |
Meaning |
|
wParam |
Specifies whether the window should be redrawn to reflect the image changes. Use 1 to redraw the window, or 0 not to redraw it. |
|
lParam |
Reserved. Set to NULL. |
Returns
|
SUCCESS |
Function was successful. |
|
< 0 |
An error occurred. Refer to Return Codes. |