Applies to: desktop apps only

Retrieves a list of sessions on a specified Remote Desktop Session Host (RD Session Host) server.

Syntax

BOOL WTSEnumerateSessions(
  __in   HANDLE hServer,
  __in   DWORD Reserved,
  __in   DWORD Version,
  __out  PWTS_SESSION_INFO *ppSessionInfo,
  __out  DWORD *pCount
);

Parameters

hServer [in]

A handle to an RD Session Host server. Specify a handle opened by the WTSOpenServer or WTSOpenServerEx function, or specify WTS_CURRENT_SERVER_HANDLE to indicate the RD Session Host server on which your application is running.

Reserved [in]

This parameter is reserved. It must be zero.

Version [in]

The version of the enumeration request. This parameter must be 1.

ppSessionInfo [out]

A pointer to a variable that receives a pointer to an array of WTS_SESSION_INFO structures. Each structure in the array contains information about a session on the specified RD Session Host server. To free the returned buffer, call the WTSFreeMemory function.

To enumerate a session, you must have Query Information permission. For more information, see Remote Desktop Services Permissions. To modify permissions on a session, use the Remote Desktop Services Configuration administrative tool.

To enumerate sessions running on a virtual machine hosted on a RD Virtualization Host server, you must be a member of the Administrators group on the RD Virtualization Host server.

pCount [out]

A pointer to the variable that receives the number of WTS_SESSION_INFO structures returned in the ppSessionInfo buffer.

Return value

If the function succeeds, the return value is a nonzero value.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Requirements

See also

WTS_SESSION_INFO

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Build date: 3/7/2012