Terminal Services

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?

Can you provide an example of an existing application with this behaviour? — Paul-Jan
There is no such thing as the "desktop tray" (blogs.msdn.com/b/oldnewthing/archive/2003/09/10/54831.aspx). Either you mean the taskbar (the place where opened windows are normally shown), or you mean the notification area /of the taskbar/, next to the clock. Please clarify. — Andreas Rejbrand
My guess: The application should put a tray notification icon in every remote session available but none in the console session. — ChristianWimmer

Ana Betts Ana Betts · Accepted Answer · 2010-08-24T23:36:02

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

Terminal Services

2 Answers