C # how to embed winform into the bottom layer of the desktop window

C # how to embed winform into the bottom layer of the desktop window 2010-03-26 from: csdnblog

• Abstract:This article introduces C # using Windows API functions: setparent, setwindowpos, and findwindow to embed winform into the bottom layer of the desktop window and provide detailed implementation.CodeFor reference.

This class always places the form at the bottom of the window.

First, call some winapi functions of user32.dll.

   Internal     Class  USER32
{
  Public     Const     Int Se_shutdown_privilege  =     0x13  ;

[Dllimport (  "  User32.dll  "  )]
  Public     Static     Extern  Intptr findwindow (  String  Lpclassname, String  Lpwindowname );

[Dllimport (  "  User32.dll  "  )]
  Public     Static     Extern  Intptr setparent (intptr hwndchild, intptr hwndnewparent );

[Dllimport (  "  User32.dll  "  )]
 Public     Static     Extern     Bool  Setwindowpos (intptr hwnd,  Int  Hwndinsertafter,  Int  X,  Int  Y,  Int  CX,
  Int Cy,  Uint  Uflags );
} 

Then, in winform:

   Public  Mainform ()
{
Initializecomponent ();

  Try  
{
  If  (Environment. osversion. version. Major  <     6  )
{
  Base . Sendtoback ();

Intptr hwndnewparent  =  User32.findwindow (  "  Progman  "  ,  Null  );
User32.setparent (  Base  . Handle, hwndnewparent );
}
  Else  
{
User32.setwindowpos (  Base . Handle,  1  ,  0  ,  0  ,  0  ,  0  , User32.se _ shutdown_privilege );
}
}
  Catch  (Applicationexception Exx)
{
MessageBox. Show (  This  , Exx. Message, "  PIN to desktop  "  );
}
}

  Private     Void  Mainform_activated (  Object  Sender, eventargs E)
{
  If  (Environment. osversion. version. Major  > =     6 )
{
User32.setwindowpos (  Base  . Handle,  1  ,  0  ,  0  ,  0  ,  0  , User32.se _ shutdown_privilege );
}
}

  Private     Void Mainform_paint (  Object  Sender, painteventargs E)
{
  If  (Environment. osversion. version. Major  > =     6  )
{
User32.setwindowpos (  Base  . Handle,  1  ,  0  ,  0 ,  0  ,  0  , User32.se _ shutdown_privilege );
}
} 

The above section describes how to embed winform into the bottom layer of the desktop window in C #, which is helpful to you.

Author: zfrong