[Gambas-user] closing form with esc

[Rob]

On Tuesday 16 March 2004 14:52, -fiero - wrote:
> can i close a form pressing the "ESC" key ???

Yes, but not with the vb code you posted.

Make a button to close the form... doesn't matter what the button 
says on it.... put "me.close" in its Click event, and set its 
Cancel property to true.  Then that button's click event will be 
fired when the user presses Esc, and the form will close.

> the keyPress and keyDown event seems to not operate in a form,
> why ? 

Currently, in gambas, each event only triggers one event handler, 
and if there is no event handler associated with the control 
that threw the event, it does not get passed up the hierarchy to 
the parent form.  That is to say, the only way the form should 
get keypress events is if there are no controls on the form or 
they all somehow lose the focus.

I'd like to see a KeyPreview property like in VB, PerlQt and 
Delphi/Kylix, but I can also understand why Benoit wouldn't want 
to do this.  So meanwhile you can work around it by either doing 
the above (for the specific case of wanting to close the form 
with Esc) or with some nasty code, as follows:

public sub Form_Keypress
	' do something here
end

public sub Textbox1_Keypress
	' do whatever the textbox needs to do, then....
	Form_Keypress
end

You need to add that Form_Keypress to the Keypress event handler 
of EVERY control that can possibly get the focus.

However, there must be a different way to do this as well because 
the Gambas IDE is written in Gambas, yet in most places you can 
press F5 and the project runs despite Key.F5 being checked in 
only one place.

Rob