C#:
[DllImport("user32", SetLastError = true, CharSet = CharSet.Auto)]
static extern bool InsertMenu(IntPtr hmenu, uint position, uint flags,
uint item_id, [MarshalAs(UnmanagedType.LPTStr)]string item_text);
VB
<DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
Friend Shared Function InsertMenu(ByVal hMenu As IntPtr, ByVal uPosition As Integer,
ByVal uFlags As Integer, ByVal uIDNewItem As Integer,
<MarshalAs(UnmanagedType.LPTStr)> ByVal lpNewItem As String) As Boolean
End Function
User-Defined Types:
None.
Notes:
Be sure to always set SetLastError in your Win32 imports. The sample code below shows how you can make use of it.
Tips & Tricks:
Without the CharSet attribute flag, the WinAPI may not know which underlying InsertMenu to call (the A version or the W version).
Sample Code:
C#:
if (!InsertMenu(hmenu, position++,
(uint)(MF.BYPOSITION | MF.SEPARATOR), id++, "Menu Item"))
throw new Win32Exception(Marshal.GetLastWin32Error());
Example Usages/Links:
Add System Menu Items to WPF Window using Win32 API:
http://pietschsoft.com/post/2008/03/27/Add-System-Menu-Items-to-WPF-Window-using-Win32-API.aspx
Add System Menu Items to a Form using Windows API:
http://pietschsoft.com/post/2008/03/04/Add-System-Menu-Items-to-a-Form-using-Windows-API.aspx
Alternative Managed API:
None.
