C# Axwindows media player在全屏模式下检测按键

我的windows窗体应用程序中有ax windows media player。当用户双击它时，它会变成全屏

 WMPLarge.KeyDownEvent += new AxWMPLib._WMPOCXEvents_KeyDownEventHandler(Form1_KeyDown);

 private void Form1_KeyDown(object sender, AxWMPLib._WMPOCXEvents_KeyDownEvent e)
    {
        if (e.nKeyCode == 27)
        {
            MessageBox.Show("");
            WMPLarge.fullScreen = false;
            WMPSmall.fullScreen = false;
        }
    }

问题：我希望用户在按下“退出键”时能够返回正常屏幕。 我在ax媒体播放器上设置了一个按键事件。此按键按下事件在正常模式下工作，但在媒体播放器全屏显示时失败

 WMPLarge.KeyDownEvent += new AxWMPLib._WMPOCXEvents_KeyDownEventHandler(Form1_KeyDown);

 private void Form1_KeyDown(object sender, AxWMPLib._WMPOCXEvents_KeyDownEvent e)
    {
        if (e.nKeyCode == 27)
        {
            MessageBox.Show("");
            WMPLarge.fullScreen = false;
            WMPSmall.fullScreen = false;
        }
    }

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如何实现这一点？

这里是我使用的一个代码片段，希望对您有所帮助

public partial class Form16 : Form,IMessageFilter
{
    public Form16()
    {
        InitializeComponent();
    }

    private void Form16_Load(object sender, EventArgs e)
    {
        this.axWindowsMediaPlayer1.URL = @"D:\MyVideo\myfile.wmv";
        Application.AddMessageFilter(this);
    }

    private void Form16_FormClosing(object sender, FormClosingEventArgs e)
    {
        Application.RemoveMessageFilter(this);
    }

    #region IMessageFilter Members
    private const UInt32 WM_KEYDOWN = 0x0100;
    public bool PreFilterMessage(ref Message m)
    {
        if (m.Msg == WM_KEYDOWN)
        {
            Keys keyCode = (Keys)(int)m.WParam & Keys.KeyCode;
            if (keyCode == Keys.Escape)
            {
                this.axWindowsMediaPlayer1.fullScreen = false;
            }
            return true;
        }
        return false;
    }
    #endregion
}

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凯·普拉什纳·阿赫·瓦赫