Electron App events not firing

I’ve tried subscribing to BeforeQuit, Quitting, WillQuit, and WindowAllClosed. Regardless of the event, my code never fires when I close the Electron window.

            Electron.App.BeforeQuit += SaveOptions;
            Electron.App.Quitting += SaveOptions;
            Electron.App.WillQuit += SaveOptions;
            Electron.App.WindowAllClosed += SaveOptions;

Using version 0.0.7 on Windows 10.

[GregorBiswanger]

I coded the night long for you and fix it and implement one more feature: Prevent Quiting 😉 I synced my work on master. The next Electron.NET API Version 0.0.8 have the fix. I will write a short documentation here tomorrow. I´m tired now.

Enjoy!

[GregorBiswanger]

You can execute your logic before the application will exit now:

public void ElectronBootstrap()
{
    // Emitted before the application starts closing its windows. 
    Electron.App.BeforeQuit += App_BeforeQuit;

    // Emitted when all windows have been closed and the application will quit. 
    Electron.App.WillQuit += App_WillQuit;

    // Emitted when the application is quitting.
    Electron.App.Quitting += App_Quitting;
}

private async Task App_BeforeQuit(QuitEventArgs arg)
{
    await Electron.Dialog.ShowMessageBoxAsync("Before Quit");
    await Electron.Dialog.ShowMessageBoxAsync("Before Quit 2");
}

private async Task App_WillQuit(QuitEventArgs arg)
{
    await Electron.Dialog.ShowMessageBoxAsync("Will Quit");
    await Electron.Dialog.ShowMessageBoxAsync("Will Quit 2");
}

private async Task App_Quitting()
{
    await Electron.Dialog.ShowMessageBoxAsync("Quitting");
    await Electron.Dialog.ShowMessageBoxAsync("Quitting 2");
}

Calling args.PreventDefault() will prevent the default behaviour, which is terminating the application:

private async Task App_BeforeQuit(QuitEventArgs arg)
{
    arg.PreventDefault();

    await Electron.Dialog.ShowMessageBoxAsync("Before Quit");
    await Electron.Dialog.ShowMessageBoxAsync("Before Quit 2");
}

The default behavior in Electron.NET is to quit the app on window all closed. If the user pressed Cmd + Q, or the developer called Electron.App.Quit(), Electron will first try to close all the windows and then emit the Electron.App.WillQuit event, and in this case the Electron.App.WindowAllClosed event would not be emitted. To deactivate the default behavior, set the Electron.WindowManager.IsQuitOnWindowAllClosed to false. The Electron.App.WindowAllClosed event would work.

public void ElectronBootstrap()
{
    Electron.WindowManager.IsQuitOnWindowAllClosed = false;

    // Emitted when all windows have been closed.
    Electron.App.WindowAllClosed += App_WindowAllClosed;
}

private async void App_WindowAllClosed()
{
    await Electron.Dialog.ShowMessageBoxAsync("All windows closed");
}

Enjoy!