How to make a window's close button just hide it when I click it?

sonic3724

As the title, what is the difference between HIDE and CLOSE of a window?

woshipapa

Intercept Windows messages and then process them

面面爱面面

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  self.Hide;
  abort;
end;

coolman214

procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
    CanClose := false;
    Form1.Hide;
end;

lazying

action:=canone;
  hide;

一时兴起

Create a global variable: CloseTrue:Boolean;

Set a real close button in the program, the event code is
procedure TForm1.btnCloseClick(sender:TObject);
begin
CloseTrue:=True;
Close;
end;
In the closing inquiry event of the form
procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
    CanClose := CloseTrue;
    Form1.Hide;
end;

theendfwc

Under normal circumstances, the close of the main window of the program means the termination of the program
And the close of other forms is just hide
If you want to hide when the main form is closed, you can use the one mentioned above
    CanClose := CloseTrue;
    Form1.Hide;
If other forms want to be released when closed, use
    action := caFree;
    freeAndNil(Form1);

stevevai

Close is an event and hide is a method. The latter cannot add its own setting function. In fact, the difference between the two is not much. As the upstairs said, the close of the main form is to close the window. If it is another window, hide and close are almost the same. Of course, the parameter Action in the close can also serve the MDI child window,