OnMouseXXX events

internal interface IAllowClick {
    event AllowClickEventHandler AllowClick;
}

[ToolboxItem(true)]
internal class WidgetButton : Button, IAllowClick {
    public event AllowClickEventHandler AllowClick;
 
    protected override void OnMouseDown(MouseEventArgs e) {
        var data = new AllowClickEventArgs(e);
        AllowClick?.Invoke(this, data);
        if (data.Allow) {
            e = new MouseEventArgs(MouseButtons.Left, e.Clicks, e.X, e.Y, e.Delta);
            base.OnMouseDown(e);
        }
    }
 
    protected override void OnMouseUp(MouseEventArgs e) {
        var data = new AllowClickEventArgs(e);
        AllowClick?.Invoke(this, data);
        if (data.Allow) {
            e = new MouseEventArgs(MouseButtons.Left, e.Clicks, e.X, e.Y, e.Delta);
            base.OnMouseUp(e);
        }
    }
}

foreach (var ctrl in this.GetControls().OfType<IAllowClick>()) {
    ctrl.AllowClick += Ctrl_AllowClick;
}
 
private void Ctrl_AllowClick(object sender, AllowClickEventArgs e) {
    switch (CurrentSettings.MouseMode) {
        case ClickMouseMode.Left:
            e.Allow = e.Button == MouseButtons.Left;
            break;
 
        case ClickMouseMode.Right:
            e.Allow = e.Button == MouseButtons.Right;
            break;
 
        case ClickMouseMode.Both:
            e.Allow = e.Button == MouseButtons.Left || e.Button == MouseButtons.Right;
            break;
    }
}