UINT BCGM_ON_BEFORE_SHOW_RIBBON_ITEM_MENU

Sent to Ribbon's parent before popup menu has been displayed.

Parameters

wParam	This parameter is not used.
lParam	A pointer to CBCGPBaseRibbonElement.

Returns

The return value is ignored.

The framework sends BCGM_ON_BEFORE_SHOW_RIBBON_ITEM_MENU registered message to the Ribbon's parent before popup menu has been displayed.

You can process this message and modify popup menus on the fly.