UINT BCGM_PROPERTY_MENU_ITEM_SELECTED |
The BCGM_PROPERTY_MENU_ITEM_SELECTED is sent to the owner of Property List Control when user selects a custom context menu item.
wParam | contains the zero-based index of selected context menu item in the list of custom menu items specified in CBCGPPropList::SetCustomMenuItems. |
lParam | points to a CBCGPPropList. |