BCGControlBar Pro for MFC
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
wParamcontains the control ID of the WinUI Tiles.
lParama pointer to a clicked caption button (CBCGPWinUITilesCaptionButton).
Returns
The return value is ignored.