[ruby-talk:7517] Re: Popping up secondary Tk windows

In article <3a3d2135.347071482@news-server>, [e-mail] says...
> I've written a simple Tk-based GUI using Ruby and, so far, I've been
> able to work out how to do everything I need by reading Tcl and perl
> Tk documentation or from searches on Google.
> 
> However, I've now hit a bit of a brick wall.  I have a situation where
> I want to pop up a data entry window at the current cursor location,
> to allow the user to enter a label to associate with an item on the
> screen.
> 
> Can someone point me at an example of code that does this in any
> language at all?
> 
> I know there are pop-up dialogs that contain just buttons, for
> confirmation of actions and so on, but can't work out how to create an
> arbitrary secondary window of my own design.
> 
> I could just make the data entry field part of the window proper, but
> that would mean it's there all the time, rarther than just when needed
> and it would also disassociate the data entry field from the specific
> item that is being addressed.
> 
> This seems like such a fundamental thing that it must be done all the
> time, but as I say I haven't been able to find an example anywhere.
> 
> Note that while I would like to be able to specify the position where
> the window pops up (so I can place it near the cursor), just being
> able to do it at all would be a start.

	use strict;
	use Tk;
	use Tk::DialogBox;
	use vars qw/$MW/;

	my $MW = tkinit;
	$MW->Button(-text => 'Dialog', -command => \&dodialog)->pack;
	MainLoop;

	sub dodialog {
	    my $dialog = $MW->DialogBox(-buttons => ['OK', 'Cancel']);
	    my $frame = $dialog->add('Frame')->pack;

	    # add whatever widgets you want to $frame
	    $frame->Label(-text => 'Field 1')->grid(-row => 0, -col => 0);
	    $frame->Entry()->grid(-row => 0, -col => 1);
	    $frame->Label(-text => 'Field 2')->grid(-row => 1, -col => 0);
	    $frame->Entry()->grid(-row => 1, -col => 1);

	    $dialog->Show;
	    $dialog->destroy;
	}

-- 
Marc Dashevsky  (remove "_" from address to reply by e-mail)