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

Specifies the style value. You can use standard Windows styles and the styles specified in L_BITMAPCLASS Windows Styles.

SUCCESS

Function was successful.

< 0

An error occurred. Refer to Return Codes.