Menus Constants
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4/8/2010
The following table shows the menu constants, with a description of the purpose of each.
Note
Menu items cannot be disabled without being grayed. To disable a menu item, use the MF_GRAYED constant.
| Programming element | Description |
|---|---|
MF_BYCOMMAND |
Identifies menu item position by command. MF_BYCOMMAND is the default if neither the MF_BYCOMMAND nor MF_BYPOSITION constant is specified. MF_BYCOMMAND cannot be used with the MF_BYPOSITION constant. |
MF_BYPOSITION |
Identifies menu item position by zero-based relative position. MF_BYPOSITION cannot be used with the MF_BYCOMMAND constant. |
MF_CHECKED |
Places a check mark next to the menu item. MF_CHECKED cannot be used with the MF_UNCHECKED constant. |
MF_ENABLED |
Enables the menu item so that it can be selected and restores it from its grayed state. MF_ENABLED cannot be used with the MF_GRAYED constant. |
MF_GRAYED |
Disables the menu item and grays it so it cannot be selected. MF_GRAYED cannot be used with the MF_ENABLED constant. |
MF_HILITE |
Highlights the menu item. MF_HILITE cannot be used with the MF_UNHILITE constant. |
MF_MENUBARBREAK |
Functions the same as the MF_MENUBREAK flag for a menu bar. For a drop-down menu, submenu, or shortcut menu, the new column is separated from the old column by a vertical line. MF_MENUBARBREAK cannot be used with the MF_MENUBREAK constant. Windows CE 1.0 and 1.01 do not support this constant. |
MF_MENUBREAK |
Places the item on a new line (for menu bars) or in a new column (for a drop-down menu, submenu, or shortcut menu) without separating columns. MF_MENUBREAK cannot be used with the MF_MENUBARBREAK constant. Windows CE 1.0 and 1.01 do not support this constant. |
MF_OWNERDRAW |
Specifies that the item is an owner-drawn item. The value for this constant is in the itemData member of the structure pointed to by the lparam parameter of the WM_MEASUREITEM or WM_DRAWITEM message sent when the menu item is created or its appearance is updated. Before the menu is displayed for the first time, the window that owns the menu receives a WM_MEASUREITEM message to retrieve the width and height of the menu item. The WM_DRAWITEM message is then sent to the window procedure of the owner window when the appearance of the menu item must be updated. MF_OWNERDRAW cannot be used with the MF_STRING and MF_SEPARATOR constants. |
MF_POPUP |
Specifies that the menu item opens a drop-down menu or submenu, depending on the value passed for the new item. This constant is used to add a menu name to a menu bar or a menu item that opens a submenu to a drop-down menu, submenu, or shortcut menu. Windows CE 1.0 and 1.01 do not support this constant. |
MF_SEPARATOR |
Draws a horizontal dividing line. This constant is used only in a drop-down menu, submenu, or shortcut menu. The line cannot be grayed, disabled, or highlighted. MF_SEPARATOR cannot be used with the MF_OWNERDRAW and MF_STRING constants. |
MF_STRING |
Specifies that the menu item is a text string. MF_STRING cannot be used with the MF_OWNERDRAW and MF_SEPARATOR constants. |
MF_UNCHECKED |
Does not place a check mark next to the menu item (default). MF_UNCHECKED cannot be used with the MF_CHECKED constant. |
MF_UNHILITE |
Removes highlighting from the menu item. MF_UNHILITE cannot be used with the MF_HILITE constant. |