WPF 窗口工具栏闪烁

有消息提醒时,会有窗口工具栏闪烁的需求,实现方法如下:

Win32.EnumWindowsProc ewp = GetWin;
Win32.EnumWindows(ewp, 0);

private bool GetWin(IntPtr hWnd, IntPtr lParam)
{
    if (hWnd != _wndHelper.Handle)
    {
        int cTxtLen = Win32.GetWindowTextLength(hWnd) + 1;
        StringBuilder title = new StringBuilder(cTxtLen);
        Win32.GetWindowText(hWnd, title, cTxtLen);
        if (title.ToString() == this.Title)
        {
            if (Win32.IsIconic(hWnd))
            {
                Win32.FlashWindow(hWnd, true);
                Win32.FlashWindow(hWnd, false);
            }
            else
            {
                Win32.SetForegroundWindow(hWnd);
            }
            this.Close();
        }
    }
    return true;
}

其中Win32类主要用于注册window函数,包括如下:

public class Win32
{
    [DllImport("user32.dll")]
    public static extern bool IsIconic(IntPtr hWnd);
                
    [DllImport("user32.dll")]
    public static extern bool FlashWindow(IntPtr hWnd, bool bInvert);
        
    [DllImport("User32.dll")]
    public static extern bool SetForegroundWindow(IntPtr hWnd);

    public delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);
    [DllImport("user32.dll")]
    public static extern int EnumWindows(EnumWindowsProc ewp, int lParam);

    [DllImport("user32.dll")]
    public static extern int GetWindowTextLength(IntPtr hWnd);

    [DllImport("user32.dll")]
    public static extern int GetWindowText(IntPtr hWnd, StringBuilder title, int size);
}

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