RAD Studio VCL Reference
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TCustomForm.Close Method

Closes the form.

Pascal
procedure Close;
C++
__fastcall Close();

Call Close to close a form. 

Attempts to close a form can be aborted by the CloseQuery event dispatcher or the OnCloseQuery event handler.

Note: When the main form of the application closes, the application terminates.
 

C++ Examples: 

 

/*
This example uses several forms. The first form has its
FormStyle property set to MDIForm. The others have their
FormStyle properties set to MDIChild and their Visible
properties set to true. Add a main menu component and name
one of the menu items CloseChildren. This is code for the
CloseChildrenClick handler.  When the user chooses the
CloseChildren command, all the MDI children of Form1 are
closed.
*/
void __fastcall TForm1::CloseChildrenClick(TObject *Sender)
{
  for(int i = MDIChildCount - 1; i >= 0; i--)
    MDIChildren[i]->Close();
}

void __fastcall TForm1::MyArrangeIconsClick(TObject *Sender)
{
  Form1->ArrangeIcons();
}

void __fastcall TForm1::MyCascadeClick(TObject *Sender)
{
  Form1->Cascade();
  }

 

Delphi Examples: 

{
This example uses several forms. The first form has its
FormStyle property set to MDIForm. The others have their
FormStyle properties set to MDIChild and their Visible
properties set to true. Add a main menu component and name
one of the menu items CloseChildren. This is code for the
CloseChildrenClick handler.  When the user chooses the
CloseChildren command, all the MDI children of Form1 are
closed.
} 
procedure TForm1.CloseChildrenClick(Sender: TObject);
var
  I: Integer;
begin
  with Form1 do
    for I := MDIChildCount-1 downto 0 do
      MDIChildren[I].Close;
end;

procedure TForm1.MyArrangeIconsClick(Sender: TObject);
begin
  Form1.ArrangeIcons;
end;

procedure TForm1.MyCascadeClick(Sender: TObject);
begin
  Form1.Cascade;
end;

 

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