Does anyone know about issues between Citrix and Delphi 2007 applications? (And perhaps other development languages?)

Question

The situation is simple. I\'ve created a complex Delphi application which uses several different techniques. The main application is a WIN32 module but a few parts are devel

Answer 1

There were some issues in the past with Published Delphi Applications on Citrix having no icon in the taskbar. I think this was resolved by the MainFormOnTaskbar (available in D2007 and higher). Apart from that there's not much difference between Terminal Server and Citrix (from the Application's perspective), the most important things you need to account for are:

• Users are NEVER administrator on a Terminal or Citrix Server, so they no rights in the Local Machine part of the registry, the C drive, Program Folder and so on.
• It must be possible for multiple users on the same system to start your application concurrently.
• Certain folders such as the Windows folder are redirected to prevent possible application issues, this is also means that API's like GetWindowsFolder do not return the real windows folder but the redirected one. Note that this behaviour can be disabled by setting a particular flag in the PE header (see delphi-and-terminal-server-aware).
• Sometimes multiple servers are used in a farm which means your application can run on any of these servers, the user is redirected to the least busy server at login (load balancing). Thefore do not use any local database to store things.
• If you use an external database or middleware or application server note that multiple users will connect with the same computername and ip address (certain Citrix versions can use Virtual IP addresses to address this).