BCGControlBar Pro for MFC
void CBCGPToolbarMenuButton::SetMenuOnly ( BOOL  bMenuOnly)
inline

Enables or disables "menu only" mode.

When the toolbar menu button is in "menu only" mode it can display only left arrow and can't be placed on a toolbar. By default this mode is turned off.

Parameters
bMenuOnlyTurns "menu only" mode on and off.