Как развернуть и свернуть форму???

void __fastcall TForm1::FormDblClick(TObject *Sender)
{
 ShowWindow(Form1->Handle,SW_MAXIMIZE);
}

ShowWindow(Form1->Handle,SW_SHOWNORMAL);

//---------------------------------------------------------------------------
 
#include <vcl.h>
#pragma hdrstop
 
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
bool Window = true;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
 
 
 
void __fastcall TForm1::FormDblClick(TObject *Sender)
{
if (Window == true)
{
   ShowWindow(Form1->Handle,SW_MAXIMIZE);
   Window = false;
}
else if (Window == false)
{
  ShowWindow(Form1->Handle,SW_SHOWNORMAL);
  Window = true;
}
 
}
//---------------------------------------------------------------------------

bool Window = true;