CheckMenuItem

The CheckMenuItem function sets the state of the specified menu item's check mark attribute to either checked or unchecked.

The CheckMenuItem function has been superseded by the SetMenuItemInfo function. You can still use CheckMenuItem, however, if you do not need any of the extended features of SetMenuItemInfo.

DWORD CheckMenuItem(
  HMENU hmenu,        // handle to menu
  UINT uIDCheckItem,  // menu item to check or uncheck
  UINT uCheck         // menu item flags
);
 

Parameters

hmenu

Handle to the menu of interest.

uIDCheckItem

Specifies the menu item whose check-mark attribute is to be set, as determined by the uCheck parameter.

uCheck

Specifies flags that control the interpretation of the uIDCheckItem parameter and the state of the menu item's check-mark attribute. This parameter can be a combination of either MF_BYCOMMAND, or MF_BYPOSITION and MF_CHECKED or MF_UNCHECKED.

Value	Meaning
MF_BYCOMMAND	Indicates that the uIDCheckItem 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 uIDCheckItem parameter gives the zero-based relative position of the menu item.
MF_CHECKED	Sets the check-mark attribute to the checked state.
MF_UNCHECKED	Sets the check-mark attribute to the unchecked state.

Return Values

The return value specifies the previous state of the menu item (either MF_CHECKED or MF_UNCHECKED). If the menu item does not exist, the return value is 0xFFFFFFFF.

Remarks

An item in a menu bar cannot have a check mark.

The uIDCheckItem parameter identifies a item that opens a submenu or a command item. For a item that opens a submenu, the uIDCheckItem parameter must specify the position of the item. For a command item, the uIDCheckItem parameter can specify either the item's position or its identifier.

See Also

Menus Overview, Menu Functions, EnableMenuItem, GetMenuItemID, SetMenuItemBitmaps, SetMenuItemInfo