[Close Window] Is there a method that can close window by its own button

[HammerBu]

When it comes an alert message or some input situation. The simplest case is that we have two buttons "yes" and "no", we can click one of them and then the window will close automatically. At the same time, parent widget will get the choice we did.

I tried to change "open" parameter but comes a reference conflict. And I tried to do something like "frame.quit" but failed. Also in the demo app, I could not find a demo to reproduce such a situation.

[parasyte]

In my app, I use a VecDeque to hold a list of error messages and closures for what to do when one of the buttons are pressed. Here's the code. And here's where it is currently used for an example of the flexibility this kind of dynamic setup provides. There's also some useful documentation right here.

In short, you don't need to use the open method with an exclusively borrowed bool. You can use any state you want to conditionally create (and hide) a window. Even the obviously naive solution:

if self.show_error {
    egui::Window::new("Error").show(ctx, |ui| {
        if ui.button("Close").clicked() {
            self.show_error = false;
        }
    });
}

[HammerBu]

In my app, I use a VecDeque to hold a list of error messages and closures for what to do when one of the buttons are pressed. Here's the code. And here's where it is currently used for an example of the flexibility this kind of dynamic setup provides. There's also some useful documentation right here.

In short, you don't need to use the open method with an exclusively borrowed bool. You can use any state you want to conditionally create (and hide) a window. Even the obviously naive solution:

if self.show_error {
    egui::Window::new("Error").show(ctx, |ui| {
        if ui.button("Close").clicked() {
            self.show_error = false;
        }
    });
}

Thank you so much! It works!

[Tudyx]

Work also for me. The little inconvenience of this method is that the window is no longer closable by the classic cross on the to right corner. The workaround I found is using 2 booleans.

[parasyte]

Yeah, this is for sure a limitation of the current design.

You might be able to use a temporary bool for the open() method. It's definitely more convoluted this way. I'm sure any advancements in the design to allow multiple ways to close an egui::Window would be awesome. (Maybe using a channel or something?)

let mut show_error = self.show_error;
if show_error {
    egui::Window::new("Error")
        .open(&mut show_error)
        .show(ctx, |ui| {
            if ui.button("Close").clicked() {
                self.show_error = false;
            }
        });
}
self.show_error &= show_error;