UINT BCGM_PROPERTY_GET_MENU_ITEM_STATE |
The BCGM_PROPERTY_GET_MENU_ITEM_STATE is sent to the owner of Property List Control when user shows a context menu with custom item(s).
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. |