UINT BCGM_ON_BEFORE_SHOW_PALETTE_CONTEXTMENU

Sent to Ribbon's parent before a palette context menu is displayed.

Parameters

wParam	A handle to context menu
lParam	A pointer to CBCGPBaseRibbonElement that is clicked.

Returns

Returns FALSE to display the context menu. Returns TRUE to prevent the context menu from being displayed.

The framework sends the BCGM_ON_BEFORE_SHOW_PALETTE_CONTEXTMENU message when the user clicks right mouse button on a palette item and a context menu is about to be displayed.

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