Rohit RE the the "local printer queue name" I'd avoid it all together and use a client based LPD server and share the printer back on the server, It avoids the name constanltly changing issue
Neven ----- Original Message ----- From: "Max Nilson" <[EMAIL PROTECTED]> To: "Multiple recipients of list delphi" <[EMAIL PROTECTED]> Sent: Thursday, January 23, 2003 2:27 PM Subject: RE: [DUG]: Terminal Server > Rohit Gupta asks: > > > Has anyone used Terminal Server for their Delphi apps ? > > > > Have you any experience to share ? Any pitfalls to watch out for ? > > Yes, we have a fairly large number of clients using our applications via > Terminal Server these days. There are two warnings I can provide that may be > of help. > > Firstly is the vexing issue of local printers and how they appear to the > terminal server application. TS munges the local printer queue name by > adding "/Session9" and similar to the name. This means that every time a new > session starts the local printers name changes, and if you are storing the > printer queue names somewhere you need to handle this. As we allow users to > save default printers for various different document types I have had to > modify the code to compare printer queue names by stripping off these > additions. > > Secondly it turns out that the call CreateCompatibleBitmap is > ****EXTREMELY**** slow on Terminal Server. And CreateCompatibleBitmap is the > GDI call used every time that you create a new TBitmap object in Delphi. It > took me a while (and a damn good profiler installed on the server) to figure > out why certain drawing operations were so slow on Terminal Server and not > on a normal machine. Once I found this I simple cached the required number > of TBitmaps I needed and reused these over and over, rather than creating > and destroying these every time though the draswing code. This increased the > speed of the drawing in question by an order of magnitude and made the > application run perfectly in TS. > > Apart from that we use the same code on both environments with no problems. > > <Mutters> Apart from the guy in Scotland, accessing his company TS in NZ via > a web cafe, who is having problems printing for some reason 8-( </Mutters> > > Cheers, Max. > > -------------------------------------------------------------------------- - > New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] > Website: http://www.delphi.org.nz > To UnSub, send email to: [EMAIL PROTECTED] > with body of "unsubscribe delphi" > Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/ > > --------------------------------------------------------------------------- New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED] Website: http://www.delphi.org.nz To UnSub, send email to: [EMAIL PROTECTED] with body of "unsubscribe delphi" Web Archive at: http://www.mail-archive.com/delphi%40delphi.org.nz/
