pinvoke.net: Edit: user32.EnableMenuItem

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Summary: The EnableMenuItem API

!!!!C# Signature:
 [DllImport("user32.dll")]
 static extern bool EnableMenuItem(IntPtr hMenu, uint uIDEnableItem,
   uint uEnable);
!!!!VB.NET Signature:
 <DllImport("user32.dll", CallingConvention:=CallingConvention.Cdecl)> _
 Public Function EnableMenuItem(ByVal hMenu As IntPtr, ByVal wIDEnableItem As UInteger, ByVal wEnable As UInteger) As IntPtr
 End Function;
!!!!User-Defined Types:
Constants used with Add/Check/EnableMenuItem:
	internal const UInt32 MF_INSERT           =0x00000000;
	internal const UInt32 MF_CHANGE           =0x00000080;
	internal const UInt32 MF_APPEND           =0x00000100;
	internal const UInt32 MF_DELETE           =0x00000200;
	internal const UInt32 MF_REMOVE           =0x00001000;
	
	internal const UInt32 MF_BYCOMMAND        =0x00000000;
	internal const UInt32 MF_BYPOSITION       =0x00000400;
	
	internal const UInt32 MF_SEPARATOR        =0x00000800;
	
	internal const UInt32 MF_ENABLED          =0x00000000;
	internal const UInt32 MF_GRAYED           =0x00000001;
	internal const UInt32 MF_DISABLED         =0x00000002;
	
	internal const UInt32 MF_UNCHECKED        =0x00000000;
	internal const UInt32 MF_CHECKED          =0x00000008;
	internal const UInt32 MF_USECHECKBITMAPS  =0x00000200;
	
	internal const UInt32 MF_STRING           =0x00000000;
	internal const UInt32 MF_BITMAP           =0x00000004;
	internal const UInt32 MF_OWNERDRAW        =0x00000100;
	
	internal const UInt32 MF_POPUP            =0x00000010;
	internal const UInt32 MF_MENUBARBREAK     =0x00000020;
	internal const UInt32 MF_MENUBREAK        =0x00000040;
	
	internal const UInt32 MF_UNHILITE         =0x00000000;
	internal const UInt32 MF_HILITE           =0x00000080;
		
	internal const UInt32 MF_DEFAULT          =0x00001000;
	internal const UInt32 MF_SYSMENU          =0x00002000;
	internal const UInt32 MF_HELP             =0x00004000;
	internal const UInt32 MF_RIGHTJUSTIFY     =0x00004000;
	
	internal const UInt32 MF_MOUSESELECT      =0x00008000;
	internal const UInt32 MF_END              =0x00000080;  /* Obsolete -- only used by old RES files */
		
	internal const UInt32 MFT_STRING          =MF_STRING;
	internal const UInt32 MFT_BITMAP          =MF_BITMAP;
	internal const UInt32 MFT_MENUBARBREAK    =MF_MENUBARBREAK;
	internal const UInt32 MFT_MENUBREAK       =MF_MENUBREAK;
	internal const UInt32 MFT_OWNERDRAW       =MF_OWNERDRAW;
	internal const UInt32 MFT_RADIOCHECK      =0x00000200;
	internal const UInt32 MFT_SEPARATOR       =MF_SEPARATOR;
	internal const UInt32 MFT_RIGHTORDER      =0x00002000;
	internal const UInt32 MFT_RIGHTJUSTIFY    =MF_RIGHTJUSTIFY;
	
	internal const UInt32 MFS_GRAYED          =0x00000003;
	internal const UInt32 MFS_DISABLED        =MFS_GRAYED;
	internal const UInt32 MFS_CHECKED         =MF_CHECKED;
	internal const UInt32 MFS_HILITE          =MF_HILITE;
	internal const UInt32 MFS_ENABLED         =MF_ENABLED;
	internal const UInt32 MFS_UNCHECKED       =MF_UNCHECKED;
	internal const UInt32 MFS_UNHILITE        =MF_UNHILITE;
	internal const UInt32 MFS_DEFAULT         =MF_DEFAULT;

!!!!Notes:
None.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:
 Public Class Form1
 
    Private Const SC_CLOSE As Integer = &HF060
    Private Const MF_GRAYED As Integer = &H1
 
    <DllImport("user32.dll", CallingConvention:=Runtime.InteropServices.CallingConvention.Cdecl)> _
    Private Shared Function GetSystemMenu(ByVal hWnd As IntPtr, ByVal bRevert As Boolean) As IntPtr
    End Function
 
    <DllImport("user32.dll", CallingConvention:=Runtime.InteropServices.CallingConvention.Cdecl)> _
    Private Shared Function EnableMenuItem(ByVal hMenu As IntPtr, ByVal wIDEnableItem As UInteger, ByVal wEnable As UInteger) As IntPtr
    End Function
 
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 
	'Disable the form's 'X' button. Note that this does not disable the Alt+F4 functionality.
        EnableMenuItem(GetSystemMenu(Me.Handle, False), SC_CLOSE, MF_GRAYED)
 
    End Sub
 
 End Class

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

Documentation: EnableMenuItem@msdn on MSDN