private void btnSetAlpha_Click(object sender, EventArgs e) { WindowsApiHelper.SetWindowsOpacity("Shell_TrayWnd"); //Shell_TrayWnd 任务栏 WindowsApiHelper.SetWindowsOpacity("StandardWindow"); //工作台 WindowsApiHelper.SetWindowsOpacity("StandardFrame"); //主窗口 WindowsApiHelper.SetWindowsOpacity(null, "系统消息"); //系统提示消息 }