[Vala] Prevent a MessageDialog from being closed with Esc

[Wolfgang Mauer <wolfgang mauer kabelmail de>]

Hi all,

is there a way to prevent a MessageDialog from closing with Esc key?


var messagedialog = new MessageDialog((Window)widget.get_toplevel(), 
DialogFlags.MODAL, MessageType.ERROR, ButtonsType.NONE, _(@"Are you sure 
you want to delete the directory $file?"));
messagedialog.add_action_widget(new Button.with_mnemonic(_("_Yes")), 
ResponseType.YES);
messagedialog.add_action_widget(new Button.with_mnemonic(_("_No")), 
ResponseType.NO);
messagedialog.add_action_widget(new Button.with_mnemonic(_("_Remove")), 
ResponseType.APPLY);
messagedialog.secondary_text = _(@"This directory and all its files and 
subfolders are permanently removed from your storage. Click 
'$(_("Remove"))' if you just want to remove it from your current project.");
messagedialog.show_all();
messagedialog.delete_event.connect( (event) =>
{
    return true; // It's just a test, looks like it does not make a 
differencewhat i return
});
var response = messagedialog.run();


My "working" solution for now is this, may there is a better way?


messagedialog.hide_on_delete();
int response = ResponseType.DELETE_EVENT;
do
{
    messagedialog.show_all();
    response = messagedialog.run();
} while(response == ResponseType.DELETE_EVENT);