Contains the control type. The values for control types are as follows:
ODT_COMBOBOX Owner-draw combo box
ODT_LISTBOX Owner-draw list box
ODT_MENU Owner-draw menu
Contains the control ID for a combo box, list box, or button. This member is not used for a menu.
Contains the menu-item ID for a menu or the list-box-item ID for a variable-height combo box or list box. This member is not used for a fixed-height combo box or list box, or for a button.
Specifies the width of a menu item. The owner of the owner-draw menu item must fill this member before it returns from the message.
Specifies the height of an individual item in a list box or a menu. Before it returns from the message, the owner of the owner-draw combo box, list box, or menu item must fill out this member. The maximum height of a list box item is 255.
For a combo box or list box, this member contains the value that was passed to the list box by one of the following: