/// <summary>
/// 找到窗口
/// </summary>
/// <param name="lpClassName">窗口類(lèi)名(例：Button)</param>
/// <param name="lpWindowName">窗口標(biāo)題</param>
/// <returns></returns>
[DllImport("user32.dll", EntryPoint = "FindWindow")]
private extern static IntPtr FindWindow(string lpClassName, string lpWindowName);
/// <summary>
/// 找到窗口
/// </summary>
/// <param name="hwndParent">父窗口句柄（如果為空，則為桌面窗口）</param>
/// <param name="hwndChildAfter">子窗口句柄（從該子窗口之后查找）</param>
/// <param name="lpszClass">窗口類(lèi)名(例：Button</param>
/// <param name="lpszWindow">窗口標(biāo)題</param>
/// <returns></returns>
[DllImport("user32.dll", EntryPoint = "FindWindowEx")]
private extern static IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
/// <summary>
/// 發(fā)送消息
/// </summary>
/// <param name="hwnd">消息接受窗口句柄</param>
/// <param name="wMsg">消息</param>
/// <param name="wParam">指定附加的消息特定信息</param>
/// <param name="lParam">指定附加的消息特定信息</param>
/// <returns></returns>
[DllImport("user32.dll", EntryPoint = "SendMessageA")]
private static extern int SendMessage(IntPtr hwnd, uint wMsg, int wParam, int lParam);
private const int BM_CLICK = 0xF5;
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