WM_PALETTECHANGED
The
WM_PALETTECHANGED message is sent to all top-level and overlapped windows after
the window with the keyboard focus has realized its logical palette, thereby
changing the system palette. This message enables a window that uses a color
palette but does not have the keyboard focus to realize its logical palette and
update its client area.
WM_PALETTECHANGED
hwndPalChg = (HWND) wParam; // handle of window that
changed palette
Parameters
hwndPalChg
Value of wParam.
Identifies the window that caused the system palette to change.
Remarks
This message
must be sent to all top-level and overlapped windows, including the one that
changed the system palette. If any child windows use a color palette, this
message must be passed on to them as well.
To avoid
creating an infinite loop, a window that receives this message must not realize
its palette, unless it determines that wParam does not contain its own
window handle.
See Also