WINSTATIONCREATE

#ifndef _WINSTA_H

// Retrieves general information on the type of terminal server session (protocol) to which the session belongs.
typedef struct _WINSTATIONCREATE
{
    ULONG fEnableWinStation : 1;
    ULONG MaxInstanceCount;
} WINSTATIONCREATE, *PWINSTATIONCREATE;

#endif
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This type is documented in the [MS-TSTS] specification.