Ok i made something,please comment it and why it won't work as it should..
Delphi-Quellcode:
var
Form2: TForm2;
handle1,taskBarWnd:hwnd;
implementation
uses Unit3;
{$R *.dfm}
procedure tform2.hide;
begin
taskBarWnd := FindWindow('Shell_TrayWnd', 0);
handle1:=FindWindowEx(taskBarWnd, 0, 'Button', 'Start');
closewindow(handle1);
end;