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Adding Palette Message Handlers
The following example illustrates simple message handlers for the WM_PALETTECHANGED and WM_QUERYNEWPALETTE messages. The example uses the DrawDibRealize function to process the WM_QUERYNEWPALETTE message.
Your application should respond to the WM_QUERYNEWPALETTE message by
invalidating the destination window to let the DrawDibDraw function redraw an image. You should respond to the WM_PALETTECHANGED message
by using the DrawDibRealize function to realize the palette.
case WM_PALETTECHANGED:
if ((HWND)wParam == hwnd)
break;
case WM_QUERYNEWPALETTE:
hdc = GetDC(hwnd);
f = DrawDibRealize(hdd, hdc, FALSE) > 0;
ReleaseDC(hwnd, hdc);
if (f)
InvalidateRect(hwnd, NULL, TRUE);
break;
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