如何将“叮”静音当用户点击表单外部时发出声音？

发布于 2024-12-14 19:01:32 字数 870 浏览 0 评论 0原文

我正在使用 Form.ShowDialog() 显示一个表单，在此表单中我覆盖了 void WndProc(ref Message m) 因为我想在用户单击时关闭此表单表单区域之外。

    private const int WM_NCACTIVATE = 0x0086;
    protected override void WndProc(ref Message m)
    {
        switch (m.Msg)
        {
            case WM_NCACTIVATE:
                if (_canClose) // when user click outside form, close form
                    this.Close(this, EventArgs.Empty);
                break;
            default:
                break;
        }

        base.WndProc(ref m);
    }

这段代码按我的预期工作，但有一个小问题，每次用户在表单区域外单击时，Windows 都会播放 DING 声音，我想在处理此代码时“静音”此 DING 。

`更新`

我根据Hassan Mujtaba的建议设法使这个表单按我想要的方式工作，但我仍然想知道如何静音这个DING如果我使用Form.ShowDialog。

日期范围控制

原文

I'm showing a form using Form.ShowDialog(), in this Form I have override void WndProc(ref Message m) because I want to close this form when user click outside Form area.

    private const int WM_NCACTIVATE = 0x0086;
    protected override void WndProc(ref Message m)
    {
        switch (m.Msg)
        {
            case WM_NCACTIVATE:
                if (_canClose) // when user click outside form, close form
                    this.Close(this, EventArgs.Empty);
                break;
            default:
                break;
        }

        base.WndProc(ref m);
    }

This code work as I expected, but one minor problem, Windows play DING sound every time user click outside Form area, I want to "mute" this DING when this code processed.

`UPDATE`

I managed to make this Form work as I want to, using advice from Hassan Mujtaba, but I still wonder how to mute this DING if I use Form.ShowDialog.

DateRange Control

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