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...popup the system menu at a specified position?
Autor: Kingron
Homepage: http://kingron.myetang.com
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Tip Rating (5):  
     


{
  How to popup the windows system menu?
  Maybe you can use Keybd_event to eumlate ALT+SPACE
  Maybe you can use a TPopupmenu.
  But they always have some problem.
  The method below is a perfect solution!
  BTW: if your form has borderstyle = bsNone, Please do it like this:
  Set forms style = bsSingle; and use the code below to set form boder:
  SetWindowLong(Handle, GWL_STYLE,GetWindowLong(Handle, GWL_STYLE)
  and (not WS_CAPTION) or WS_DLGFRAME or WS_OVERLAPPED);
}

procedure TForm1.Button1Click(Sender: TObject);
const
  
{ Undocument message ID }
  
WM_POPUPSYSTEMMENU = $313;
begin
  
SendMessage(Handle, WM_POPUPSYSTEMMENU, 0,
    MakeLong(Mouse.CursorPos.X, Mouse.CursorPos.Y));
end;

 

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