Keeping the focus on the same form

Posted on 1998-07-16
Last Modified: 2010-04-04
I have two forms which are visible at all time. One has some buttons, the other one has a TEdit. I want the Tedit to have the focus at all time. When the user clicks on the button, of course the focus goes to that form. Is there a way to prevent a form to get the focus, even if a component on that form is clicked. Right now I just have a OnClick event for everything on the form with the button that sets the focus back to the form with the edit button. It works but I would prefer a cleaner solution, like a form property that prevents the form from getting the focus.
Question by:moonrise
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Expert Comment

ID: 1358068
I don't think it's possible.
I would be interesed if it is.
LVL 10

Expert Comment

ID: 1358069
Are you trying to make a button to stay in the caption area of the first button?

Viktor Ivanov
LVL 10

Expert Comment

ID: 1358070
Are you trying to make a button to stay in the caption area of the first button?

Viktor Ivanov
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Expert Comment

ID: 1358071
Try make Form2(with Edit) modal.
After that you could not switch to Form1

LVL 10

Accepted Solution

Jacco earned 20 total points
ID: 1358072
You can do one thing to do this.

first you install the following message handler on the form that you don't want to be activated:

procedure WMMouseActivate(var Message: TMessage); message WM_MOUSEACTIVATE;


procedure TForm2.WMMouseActivate(var Message: TMessage);
  Message.Result := MA_NOACTIVATE;

Second you should you components on that form that cannot receive the focus:

in stead of TButton's use TSpeedButton's.

The only way your Form will get activated then is when the user starts to move your Form. If you want to disable that behaviour override the WM_NCHitTest message handler of the Form and return the value HTCLIENT.

procedure WMNCHitTest(var Message: TWMNCHitTest); message WM_NCHITTEST;

procedure TForm2.WMNCHitTest(var Message: TWMNCHitTest);
  Message.Result := HTCLIENT;

Hope this helps you on the way!


Author Comment

ID: 1358073
Hi Jacco,

It works just as you said.  Thank you.

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