Question

HI,

Im using Delphi and I want to make an application that can do the following

When started from within Terminal services (remote desktop), if another user logs into another terminal services session they should be able to see the application running in the desktop tray. However if a user sitting at the server logs in then they shouldn’t see the application running in the desktop tray. Its fine if everyone can see it running in the process list, just not the desktop tray.

How can I do this?

Answer 1

Make your application launch on startup on every user, then use this function to determine whether to quit or not:

#include <windows.h>
#include <winternl.h>

BOOL IsRunningOnTerminalServerClient( void )
{
    PWINSTATIONQUERYINFORMATIONW WinStationQueryInformationW;
    WINSTATIONINFORMATIONW wsInfo;
    HINSTANCE hInstWinSta;
    ULONG ReturnLen;

    hInstWinSta = LoadLibraryA( "winsta.dll" );
    if( hInstWinSta )
    {
        WinStationQueryInformationW = (PWINSTATIONQUERYINFORMATIONW)
            GetProcAddress( hInstWinSta, "WinStationQueryInformationW" );
        if( WinStationQueryInformationW &&
                WinStationQueryInformationW( SERVERNAME_CURRENT, 
                    LOGONID_CURRENT, 
                    WinStationInformation,
                    &wsInfo, 
                    sizeof(wsInfo), 
                    &ReturnLen ) &&
                ( wsInfo.LogonId != 0 ) )
        {
            FreeLibrary( hInstWinSta );
            return( TRUE );
        }
        FreeLibrary( hInstWinSta );
    }
    return FALSE;
}

Pulled from http://msdn.microsoft.com/en-us/library/aa383827(v=VS.85).aspx