UINT BCGM_ON_CLICK_WINUI_CAPTION_BUTTON

The message is sent to the owner of WinUI Tiles (CBCGPWinUITiles) when the user clicks a caption button.

Parameters

wParam	contains the control ID of the WinUI Tiles.
lParam	a pointer to a clicked caption button (CBCGPWinUITilesCaptionButton).

Returns

the return value is ignored.