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InsertMenu

  • Article

This function inserts a new menu item into a menu, moving other items down the menu.

BOOL InsertMenu(
  HMENU hMenu, 
  UINT uPosition, 
  UINT uFlags, 
  UINT uIDNewItem, 
  LPCTSTR lpNewItem 
);

Parameters

  • hMenu
    [in] Handle to the menu to be changed.
  • uPosition
    [in] Specifies the menu item before which the new menu item is to be inserted, as determined by the uFlags parameter.
  • uFlags
    [in] Specifies flags that control the interpretation of the uPosition parameter and the content, appearance, and behavior of the new menu item. This parameter must be a combination of one of the following required values and at least one of the values listed in the following Remarks section.
    Value Description
    MF_BYCOMMAND Indicates that the uPosition parameter gives the identifier of the menu item. The MF_BYCOMMAND flag is the default if neither the MF_BYCOMMAND nor MF_BYPOSITION flag is specified.
    MF_BYPOSITION Indicates that the uPosition parameter gives the zero-based relative position of the new menu item. If uPosition is 0xFFFFFFFF, the new menu item is appended to the end of the menu.
  • uIDNewItem
    [in] Specifies either the identifier of the new menu item or, if the uFlags parameter has the MF_POPUP flag set, the handle to the drop-down menu or submenu.
  • lpNewItem
    [in] Long pointer to the content of the new menu item. The interpretation of lpNewItem depends on whether the uFlags parameter includes the MF_OWNERDRAW or MF_STRING flag, as follows.
    Value Description
    MF_OWNERDRAW Contains a 32-bit value supplied by the application that can be used to maintain additional data related to the menu item. The value 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.
    MF_STRING Contains a pointer to a null-terminated string (the default).

Return Values

Nonzero indicates success. Zero indicates failure. To get extended error information, call GetLastError.

Remarks

The application must call the DrawMenuBar function whenever a menu changes, whether or not the menu is in a displayed window.

The following list describes the flags that can be set in the uFlags parameter:

  • MF_CHECKED
    Places a check mark next to the menu item.

  • MF_ENABLED
    Enables the menu item so that it can be selected and restores it from its grayed state.

  • MF_GRAYED
    Disables the menu item and grays it so it cannot be selected.

  • 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.

    Windows CE versions 1.0 and 1.01 do not support this flag.

  • 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.

    Windows CE versions 1.0 and 1.01 do not support this flag.

  • MF_OWNERDRAW
    Specifies that the item is an owner-drawn item. 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 whenever the appearance of the menu item must be updated.

  • MF_POPUP
    Specifies that the menu item opens a drop-down menu or submenu. The uIDNewItem parameter specifies the handle to the drop-down menu or submenu. This flag 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 versions 1.0 and 1.01 do not support this flag.

  • MF_SEPARATOR
    Draws a horizontal dividing line. This flag is used only in a drop-down menu, submenu, or shortcut menu. The line cannot be grayed, disabled, or highlighted. The lpNewItem and uIDNewItem parameters are ignored.

  • MF_STRING
    Specifies that the menu item is a text string; the lpNewItem parameter points to the string.

  • MF_UNCHECKED
    Does not place a check mark next to the menu item (default).

The following groups of flags cannot be used together:

  • MF_BYCOMMAND and MF_BYPOSITION
  • MF_ENABLED and MF_GRAYED
  • MF_STRING, MF_OWNERDRAW, and MF_SEPARATOR
  • MF_MENUBARBREAK and MF_MENUBREAK
  • MF_CHECKED and MF_UNCHECKED

Menu items cannot be disabled without being grayed. To disable a menu item, use the MF_GRAYED flag.

Windows CE versions 1.0 and 1.01 do not support cascading menus. If you are using Windows CE 1.0 or 1.01, you cannot insert an MF_POPUP menu into another pop-up menu. If using Windows CE 2.0 or later, you can.

Requirements

OS Versions: Windows CE 1.0 and later.
Header: Winuser.h.
Link Library: Menu.lib.

See Also

AppendMenu | CreateMenu | DeleteMenu | RemoveMenu | WM_DRAWITEM | WM_MEASUREITEM | Menu Functions

Last updated on Wednesday, April 13, 2005

© 2005 Microsoft Corporation. All rights reserved.