C# Signature:
// ms-help://MS.VSCC.v80/MS.MSDN.v80/MS.WIN32COM.v10.en/dllproc/base/createdesktop.htm
[DllImport("user32.dll", EntryPoint="CreateDesktop", CharSet=CharSet.Unicode, SetLastError=true)]
public static extern IntPtr CreateDesktop(
[MarshalAs(UnmanagedType.LPWStr)] string desktopName,
[MarshalAs(UnmanagedType.LPWStr)] string device, // must be null.
[MarshalAs(UnmanagedType.LPWStr)] string deviceMode, // must be null,
[MarshalAs(UnmanagedType.U4)] int flags, // use 0
[MarshalAs(UnmanagedType.U4)] DESKTOP_ACCESS_MASK accessMask,
[MarshalAs(UnmanagedType.LPStruct)] SecurityAttributes attributes);
// ms-help://MS.VSCC.v80/MS.MSDN.v80/MS.WIN32COM.v10.en/dllproc/base/closedesktop.htm
[DllImport("user32.dll", EntryPoint="CloseDesktop", CharSet = CharSet.Unicode, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool CloseDesktop(IntPtr handle);
User-Defined Types:
None.
Notes:
None.
Tips & Tricks:
DesktopClass on dotnet-snippets.de
Sample Code:
public class SafeDesktopHandle : BaseSafeHandle
{
public SafeDesktopHandle(IntPtr handle, bool ownsHandle)
: base(handle, ownsHandle)
{ }
protected override bool CloseNativeHandle(IntPtr handle)
{
return WindowStationAndDesktop.CloseDesktop(handle);
}
}
[Flags]
internal enum DESKTOP_ACCESS_MASK : uint
{
DESKTOP_NONE = 0,
DESKTOP_READOBJECTS = 0x0001,
DESKTOP_CREATEWINDOW = 0x0002,
DESKTOP_CREATEMENU = 0x0004,
DESKTOP_HOOKCONTROL = 0x0008,
DESKTOP_JOURNALRECORD = 0x0010,
DESKTOP_JOURNALPLAYBACK = 0x0020,
DESKTOP_ENUMERATE = 0x0040,
DESKTOP_WRITEOBJECTS = 0x0080,
DESKTOP_SWITCHDESKTOP = 0x0100,
GENERIC_ALL = ( DESKTOP_READOBJECTS | DESKTOP_CREATEWINDOW | DESKTOP_CREATEMENU |
DESKTOP_HOOKCONTROL | DESKTOP_JOURNALRECORD | DESKTOP_JOURNALPLAYBACK |
DESKTOP_ENUMERATE | DESKTOP_WRITEOBJECTS | DESKTOP_SWITCHDESKTOP |
STANDARD_ACCESS.STANDARD_RIGHTS_REQUIRED),
}
Alternative Managed API:
Do you know one? Please contribute it!
DesktopClass on dotnet-snippets.de
