Code:
MENUITEMINFO Structure
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The MENUITEMINFO structure contains information about a menu item.
Syntax
typedef struct tagMENUITEMINFO {
UINT cbSize;
UINT fMask;
UINT fType;
UINT fState;
UINT wID;
HMENU hSubMenu;
HBITMAP hbmpChecked;
HBITMAP hbmpUnchecked;
ULONG_PTR dwItemData;
LPTSTR dwTypeData;
UINT cch;
HBITMAP hbmpItem;
} MENUITEMINFO, *LPMENUITEMINFO;
Members
cbSize
Size of structure, in bytes. The caller must set this to sizeof(MENUITEMINFO).
fMask
Members to retrieve or set. This member can be one or more of these values.
MIIM_BITMAP
Microsoft® Windows® 98/Windows Millennium Edition (Windows Me), Windows 2000/Windows XP: Retrieves or sets the hbmpItem member.
MIIM_CHECKMARKS
Retrieves or sets the hbmpChecked and hbmpUnchecked members.
MIIM_DATA
Retrieves or sets the dwItemData member.
MIIM_FTYPE
Windows 98/Windows Me, Windows 2000/Windows XP: Retrieves or sets the fType member.
MIIM_ID
Retrieves or sets the wID member.
MIIM_STATE
Retrieves or sets the fState member.
MIIM_STRING
Windows 98/Windows Me, Windows 2000/Windows XP: Retrieves or sets the dwTypeData member.
MIIM_SUBMENU
Retrieves or sets the hSubMenu member.
MIIM_TYPE
Retrieves or sets the fType and dwTypeData members. Windows 98/Me, Windows 2000/XP: MIIM_TYPE is replaced by MIIM_BITMAP, MIIM_FTYPE, and MIIM_STRING.
fType
Menu item type. This member can be one or more of the following values.
The MFT_BITMAP, MFT_SEPARATOR, and MFT_STRING values cannot be combined with one another. Set fMask to MIIM_TYPE to use fType.
Windows 98/Me and Windows 2000/XP: fType is used only if fMask has a value of MIIM_FTYPE.
MFT_BITMAP
Displays the menu item using a bitmap. The low-order word of the dwTypeData member is the bitmap handle, and the cch member is ignored.
Windows 98/Me, Windows 2000/XP: MFT_BITMAP is replaced by MIIM_BITMAP and hbmpItem.
MFT_MENUBARBREAK
Places the menu item on a new line (for a menu bar) or in a new column (for a drop-down menu, submenu, or shortcut menu). For a drop-down menu, submenu, or shortcut menu, a vertical line separates the new column from the old.
MFT_MENUBREAK
Places the menu item on a new line (for a menu bar) or in a new column (for a drop-down menu, submenu, or shortcut menu). For a drop-down menu, submenu, or shortcut menu, the columns are not separated by a vertical line.
MFT_OWNERDRAW
Assigns responsibility for drawing the menu item to the window that owns the menu. The window receives a WM_MEASUREITEM message before the menu is displayed for the first time, and a WM_DRAWITEM message whenever the appearance of the menu item must be updated. If this value is specified, the dwTypeData member contains an application-defined value.
MFT_RADIOCHECK
Displays selected menu items using a radio-button mark instead of a check mark if the hbmpChecked member is NULL.
MFT_RIGHTJUSTIFY
Right-justifies the menu item and any subsequent items. This value is valid only if the menu item is in a menu bar.
MFT_RIGHTORDER
Windows 95/98/Me, Windows 2000/XP: Specifies that menus cascade right-to-left (the default is left-to-right). This is used to support right-to-left languages, such as Arabic and Hebrew.
MFT_SEPARATOR
Specifies that the menu item is a separator. A menu item separator appears as a horizontal dividing line. The dwTypeData and cch members are ignored. This value is valid only in a drop-down menu, submenu, or shortcut menu.
MFT_STRING
Displays the menu item using a text string. The dwTypeData member is the pointer to a null-terminated string, and the cch member is the length of the string.
Windows 98/Me, Windows 2000/XP: MFT_STRING is replaced by MIIM_STRING.
fState
Menu item state. This member can be one or more of these values. Set fMask to MIIM_STATE to use fState.
MFS_CHECKED
Checks the menu item. For more information about selected menu items, see the hbmpChecked member.
MFS_DEFAULT
Specifies that the menu item is the default. A menu can contain only one default menu item, which is displayed in bold.
MFS_DISABLED
Disables the menu item and grays it so that it cannot be selected. This is equivalent to MFS_GRAYED.
MFS_ENABLED
Enables the menu item so that it can be selected. This is the default state.
MFS_GRAYED
Disables the menu item and grays it so that it cannot be selected. This is equivalent to MFS_DISABLED.
MFS_HILITE
Highlights the menu item.
MFS_UNCHECKED
Unchecks the menu item. For more information about clear menu items, see the hbmpChecked member.
MFS_UNHILITE
Removes the highlight from the menu item. This is the default state.
wID
Application-defined 16-bit value that identifies the menu item. Set fMask to MIIM_ID to use wID.
hSubMenu
Handle to the drop-down menu or submenu associated with the menu item. If the menu item is not an item that opens a drop-down menu or submenu, this member is NULL. Set fMask to MIIM_SUBMENU to use hSubMenu.
hbmpChecked
Handle to the bitmap to display next to the item if it is selected. If this member is NULL, a default bitmap is used. If the MFT_RADIOCHECK type value is specified, the default bitmap is a bullet. Otherwise, it is a check mark. Set fMask to MIIM_CHECKMARKS to use hbmpChecked.
hbmpUnchecked
Handle to the bitmap to display next to the item if it is not selected. If this member is NULL, no bitmap is used. Set fMask to MIIM_CHECKMARKS to use hbmpUnchecked.
dwItemData
Application-defined value associated with the menu item. Set fMask to MIIM_DATA to use dwItemData.
dwTypeData
Content of the menu item. The meaning of this member depends on the value of fType and is used only if the MIIM_TYPE flag is set in the fMask member.
To retrieve a menu item of type MFT_STRING, first find the size of the string by setting the dwTypeData member of MENUITEMINFO to NULL and then calling GetMenuItemInfo. The value of cch+1 is the size needed. Then allocate a buffer of this size, place the pointer to the buffer in dwTypeData, increment cch, and call GetMenuItemInfo once again to fill the buffer with the string. If the retrieved menu item is of some other type, then GetMenuItemInfo sets the dwTypeData member to a value whose type is specified by the fType member.
When using with the SetMenuItemInfo function, this member should contain a value whose type is specified by the fType member.
Windows 98/Me and Windows 2000/XP: dwTypeData is used only if the MIIM_STRING flag is set in the fMask member.
cch
Length of the menu item text, in TCHARs, when information is received about a menu item of the MFT_STRING type. However, cch is used only if the MIIM_TYPE flag is set in the fMask member and is zero otherwise. Also, cch is ignored when the content of a menu item is set by calling SetMenuItemInfo.
Note that, before calling GetMenuItemInfo, the application must set cch to the length of the buffer pointed to by the dwTypeData member. If the retrieved menu item is of type MFT_STRING (as indicated by the fType member), then GetMenuItemInfo changes cch to the length of the menu item text. If the retrieved menu item is of some other type, GetMenuItemInfo sets the cch field to zero.
Windows 98/Me, Windows 2000/XP: The cch member is used when the MIIM_STRING flag is set in the fMask member.
hbmpItem
Windows 98/Me, Windows 2000/XP: Handle to the bitmap to be displayed, or it can be one of the values in the following table. It is used when the MIIM_BITMAP flag is set in the fMask member.
HBMMENU_CALLBACK
A bitmap that is drawn by the window that owns the menu. The application must process the WM_MEASUREITEM and WM_DRAWITEM messages.
HBMMENU_MBAR_CLOSE
Close button for the menu bar.
HBMMENU_MBAR_CLOSE_D
Disabled close button for the menu bar.
HBMMENU_MBAR_MINIMIZE
Minimize button for the menu bar.
HBMMENU_MBAR_MINIMIZE_D
Disabled minimize button for the menu bar.
HBMMENU_MBAR_RESTORE
Restore button for the menu bar.
HBMMENU_POPUP_CLOSE
Close button for the submenu.
HBMMENU_POPUP_MAXIMIZE
Maximize button for the submenu.
HBMMENU_POPUP_MINIMIZE
Minimize button for the submenu.
HBMMENU_POPUP_RESTORE
Restore button for the submenu.
HBMMENU_SYSTEM
Windows icon or the icon of the window specified in dwItemData.
Remarks
A menu can display items using text or bitmaps, but not both.
The MENUITEMINFO structure is used with the GetMenuItemInfo, InsertMenuItem, and SetMenuItemInfo functions.
Windows 98/Me and Windows 2000/XP: The menu can display items using text, bitmaps, or both.
Structure Information
Header Declared in Winuser.h, include Windows.h
Minimum operating systems Windows 95, Windows NT 4.0
Unicode Implemented as Unicode and ANSI versions on Windows NT, Windows 2000, Windows XP
See Also
Menus Overview, GetMenuItemInfo, InsertMenuItem, SetMenuItemInfo, WM_DRAWITEM, WM_MEASUREITEM
This is from the platform sdk. (code tags were used since it looked nasty otherwise)