BCGCBPRODLLEXPORT UINT BCGM_ON_CLICK_WINUI_NAV_BACK_BUTTON

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

Parameters

wParam	contains the control ID of the WinUI Tiles.
lParam	this parameter is ignored.

Returns

The return value is ignored.

The framework doesn't send BCGM_ON_CLICK_WINUI_NAV_BACK_BUTTON message if WinUI tile has an active view. In this case the view is automatically closed upon clicking the navigation "Back" button and control returns to initial ("Start") page.