BM_SETSTATE
An
application sends a BM_SETSTATE message to change the highlight state of a
button. The highlight state indicates whether the button is highlighted as if
the user had pushed it.
BM_SETSTATE
wParam = (WPARAM) fState; // highlight state
lParam = 0;
// not used; must be
zero
Parameters
fState
Value of wParam.
Specifies whether the button is to be highlighted. A value of TRUE highlights
the button. A value of FALSE removes any highlighting.
Return Values
This message
always returns zero.
Remarks
Highlighting
only affects the appearance of a button. It has no effect on the check state of
a radio button or check box.
A button is
automatically highlighted when the user positions the cursor over it and
presses and holds the left mouse button. The highlighting is removed when the
user releases the mouse button.
See Also