RDP OS Design Development (Windows CE 5.0)

Article
09/14/2012

With the support for Remote Desktop Protocol in for Microsoft Windows CE, a user on a Windows CE-based device can connect remotely to a desktop computer running Microsoft Windows XP Professional, or a server running Microsoft Windows NT Server 4.0, Terminal Server Edition or later.

The Remote Desktop Protocol allows the desktop to be remoted to a thin client so that it appears that Windows applications are executed within a Windows graphical user interface (GUI) environment on the thin client. The applications are actually being executed on the terminal server.

OS Design Information

The following table shows operating system requirements for Remote Desktop Protocol.

Concepts	Description
Dependencies	A Terminal Server running RDP version 4.0 or later.
Hardware considerations	A serial or Ethernet connection for network communication between the Windows CE client and the server.

**Note **Although not required, whenever possible, you should include a keyboard driver, even if the device has a software-based input panel. If a device does not have a PS2 port, use the NOP keyboard driver (BSP_KEYBD_NOP=1).

Modules and Components

The following table shows the modules and components that implement Remote Desktop Protocol (RDP).

Item	Module	Component
Microsoft Terminal Services Client ActiveX®	mstscax	None

Additionally, there are supporting modules that are used in RDP devices, such as a Thin Client. In this type of device, the Thin Client shell hosts the mstscax control.

For more information about mstscax and supporting modules, see RDP Modules.

RDP Implementation Considerations

The following Sysgen variables control the Remote Desktop Protocol (RDP) functionality listed.

Sysgen variable	Functionality
SYSGEN_RDP	Adds base RDP functionality, the CETSC executable, and the MSTSCAX ActiveX dynamic-link library (DLL).
SYSGEN_RDP_AXCTRL	Enables RDP to run in Microsoft® ActiveX® Control. This allows you to host RDP in a browser window or in your own container. Note If this variable is set, RDP does not run under Windowing, and Events Subsystem (GWES).
SYSGEN_RDP_AUDIO	Enables audio redirection from the server to the RDP client.
SYSGEN_RDP_PRINTER	Enables local printer redirection from the server to the RDP client.
SYSGEN_RDP_SMARTCARD	Enables smart card redirection for terminal server login and application usage. OS developers must add the smart card driver appropriate for their system.
SYSGEN_RDP_PORT	Enables serial and parallel port redirection.
SYSGEN_RDP_CLIPBOARD	Enables cut, copy, and paste clipboard redirection.
SYSGEN_RDP_UI	Enables user interface dialog boxes.
SYSGEN_RDP_DRIVE	Enables file storage redirection.
SYSGEN_RDP_FILTERFSD	Enables filtered file storage redirection.