1:完整示例代码：
                //rdp_program 为AxMsRdpClient6NotSafeForScripting类型
                rdp_program.Dock = DockStyle.Fill;
                rdp_program.Server = "";
                rdp_program.UserName = "";

                //IMsTscNonScriptable secured = (IMsTscNonScriptable)rdp_program.GetOcx();
                //secured.ClearTextPassword = textPass.Text;
                //secured.ClearTextPassword = "123";
                //rdp_program.SecuredSettings.StartProgram = "%SYSTEMROOT%\\System32\\notepad.exe";
               // rdp_program.SecuredSettings.WorkDir = "%SYSTEMROOT%";
                rdp_program.AdvancedSettings6.ClearTextPassword = "";
                rdp_program.RemoteProgram.RemoteProgramMode = true;
                //rdp_program.AdvancedSettings6.RedirectDrives = true;
                // rdp_program.AdvancedSettings6.
                rdp_program.OnConnected += (_1, _2) => { rdp_program.RemoteProgram.ServerStartProgram(@"%SYSTEMROOT%\\System32\\notepad.exe", "", "%SYSTEMROOT%", true, "", false); };
                //rdp_program.RemoteProgram.ServerStartProgram(@"%SYSTEMROOT%\notepad.exe", "", "%SYSTEMROOT%", true, "", false);
                //rdp_program.OnConnected=
                rdp_program.AdvancedSettings6.PublicMode = false;
                rdp_program.DesktopWidth = SystemInformation.VirtualScreen.Width;
                rdp_program.DesktopHeight = SystemInformation.VirtualScreen.Height;
                //rdp_program.AdvancedSettings6.AuthenticationLevel = 3;
                rdp_program.AdvancedSettings6.SmartSizing = true;

                rdp_program.Connect();

2:要把你想打开的程序添加到允许远程程序连接管理的列表中，win 2008 server有这个服务，win7没有这个服务
      win7解决方式：http://drtritsch.com/2011/08/remoteapp-on-windows-7-2
      win 2008 server解决方式：
      Click Start, point to Administrative Tools, point to Remote Desktop Services, and then click RemoteApp Manager.
      In the Action pane, click Add RemoteApp Programs.
      On the Welcome to the RemoteApp Wizard page, click Next.
       On the Choose programs to add to the RemoteApp Program list page, select the Calculator check box, and then click Next.
       On the Review Settings page, click Finish.

bool CVirtualAppDlg::ConnectToMstscApp()
{
int width = GetSystemMetrics(SM_CXSCREEN);     
int height = GetSystemMetrics(SM_CYSCREEN);    
m_rdp.put_DesktopHeight(height);  
m_rdp.put_DesktopWidth(width); 

CMsRdpClientAdvancedSettings6 m_MsRdpClientAdvancedSettings(m_rdp.get_AdvancedSettings());  
m_rdp.put_UserName("Administrator"); //登陆用户名   
m_rdp.put_Server("192.168.7.173");//远程目标主机的IP 
m_rdp.put_ColorDepth(32);

m_MsRdpClientAdvancedSettings.put_Compress(1);  
m_MsRdpClientAdvancedSettings.put_BitmapPeristence(1);  
m_MsRdpClientAdvancedSettings.put_ClearTextPassword("Aa123!");//登陆密码   
m_MsRdpClientAdvancedSettings.put_RDPPort(3389);
m_MsRdpClientAdvancedSettings.put_singleConnectionTimeout(5);//连接时延   

m_rdp.Connect();

return true;
}

void CVirtualAppDlg::OnConnectedMstscax1()
{
m_TSRemoteProgram2.put_RemoteProgramMode(TRUE);
m_TSRemoteProgram2.ServerStartProgram("C:\\Windows\\System32\\calc.exe","","C:\\Windows\\System32",VARIANT_TRUE,NULL,VARIANT_FALSE);

}
各位：我把ServerStartProgram放到了OnConnectedMstscax1中也不能打开虚拟应用，请问什么问题？
在此之前将ServerStartProgram放到了m_rdp.Connect();之前也是不行。

用这两属性立马就好用，可以测试下
 rdp.SecuredSettings.StartProgram = @"D:\Pro\test.exe";
 rdp.SecuredSettings.WorkDir = @"d:\Pro";