捕获提示窗体消失的事件

using System.Runtime.InteropServices;

 

[DllImport("user32.dll")]

public static extern bool GetClassName(IntPtr hWnd,

    StringBuilder lpClassName, int nMaxCount);

 

public delegate bool WNDENUMPROC(IntPtr hwnd, int lParam);

 

[DllImport("user32.dll")]

public static extern int EnumWindows(WNDENUMPROC lpEnumFunc, int lParam);

[DllImport("user32.dll")]

public static extern uint GetWindowThreadProcessId(IntPtr hWnd,

    out uint dwProcessId);

[DllImport("kernel32.dll")]

public static extern uint GetCurrentProcessId();

 

public class SubWindow : NativeWindow

{

    protected override void WndProc(ref Message m)

    {

        const int WM_SHOWWINDOW = 0x0018;

 

        switch (m.Msg)

        {

            case WM_SHOWWINDOW:

                if (m.LParam == IntPtr.Zero)

                    Console.WriteLine("隐藏");

                break;

        }

        base.WndProc(ref m);

    }

}

 

public static bool EnumFunc(IntPtr hwnd, int lParam)

{

    uint vProcessID;

    GetWindowThreadProcessId(hwnd, out vProcessID);

    if (vProcessID != GetCurrentProcessId()) return true;

    StringBuilder vStringBuilder = new StringBuilder(255);

    GetClassName(hwnd, vStringBuilder, vStringBuilder.Capacity);

    if (vStringBuilder.ToString().IndexOf("tooltips_class32") > 0)

    {

        Console.WriteLine(vStringBuilder.ToString());

        new SubWindow().AssignHandle(hwnd);

        return false;

    }

    else return true;

}

 

private void Form1_Load(object sender, EventArgs e)

{

    EnumWindows(EnumFunc, 0);

}