Win32 modal dialog problem.

[John Gill <jng europe renre com>]

I've been having problems with modal dialogs on win32.

Specifically, if I have a modal dialog which in turn pops up a modal dialog then I find that the second dialog comes up behind the first dialog -- it gets the focus correctly and is indeed modal, but it is concealed by the original window.

Under linux everything works as expected :)

I can get the win32 version to work a little better by setting the original window to be non-modal before popping up the second modal dialog.

See attached pygtk code for a demonstration of the problem.

Is this a bug in the win32 version of gtk or am I doing something wrong?

John


"""
Test windows modal stuff.
"""
import gtk

class App(gtk.Window):

    def __init__(self):

        gtk.Window.__init__(self)
        self.set_size_request(400, 250)
        vbox = gtk.VBox()
        self.add(vbox)
        button = gtk.Button('Press Me')
        button.connect('clicked', self.on_button)
        vbox.pack_start(button)

        quit = gtk.Button('Quit')
        quit.connect('clicked', self.on_quit)
        vbox.pack_start(quit)
        self.show_all()
        self.connect('destroy', gtk.mainquit)
        self.set_modal(True)

    def on_quit(self, *args):

        self.destroy()
        gtk.mainquit()
        
    def on_button(self, *args):
        
        NestedDialog(self)


class NestedDialog(gtk.Dialog):

    # Set to false to see buggy behaviour on windows
    Kludge = True

    def __init__(self, parent):
        """ Dialog to let user chose values to filter. """

        # Initialise Dialog base class
        gtk.Dialog.__init__(
            self, 'Filter', parent,
            gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
            (gtk.STOCK_OK, gtk.RESPONSE_OK,
             gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL))

        self.set_size_request(400, 250)

        self.vbox.pack_start(gtk.Label('Simple nesting test'),
                             expand=True, fill=True)

        self.show_all()

        # Tell parent it is not modal
        if self.Kludge:
            pmodal = parent.get_modal()
            parent.set_modal(False)

        response = self.run()

        # Re-set modality of parent
        if self.Kludge:
            parent.set_modal(pmodal)
        
        self.process_response(response)
        
    def process_response(self, response):
        """ Process dialog response """

        if response == gtk.RESPONSE_OK:
            NestedDialog(self)

        self.destroy()


if __name__ == '__main__':
    import sys

    sys.path.insert(0, 'E:\work\python')
    
    app = App()
    gtk.main()