Solved

Textwidth in inches on a printer

Posted on 1997-09-25
2
397 Views
Last Modified: 2010-04-04
I have tries the following code:
    Printer.BeginDoc;
    Printer.Canvas.Font.Assign(Font);
    t:=Printer.Canvas.TextWidth(s);  { s is a string }
    PixelsPrInch:=GetDeviceCaps(Printer.Handle,LOGPIXELSX);     WidthPrint:=t/PixelsPrInch;
    Printer.Abort;
    Printer.EndDoc;

The problem is that the code sends a small file (1kb) to the printer. The file is newer printed, but remans in the printer queue. Since i use this many time in the programme, the printer queue is filled up and generates an error.

I have tried not using the EndDoc method, but that just gives a "Printer in use" error when the procedure is called next time.
0
Comment
Question by:kvj
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 1

Accepted Solution

by:
jturpin earned 120 total points
ID: 1346287

Don't use
   Printer.BeginDoc;
and
   Printer.Abort;
   Printer.EndDoc;

if you just say:
   Printer.Canvas.Font.Assign(Font);
   t:=Printer.Canvas.TextWidth(s); { s is a string }
   PixelsPrInch:=GetDeviceCaps(Printer.Handle,LOGPIXELSX);
   WidthPrint:=t/PixelsPrInch;

you will get what you want.

John.

0
 

Author Comment

by:kvj
ID: 1346288
This works, but it is also runs very slow. Any ideas on how to speed it up ?
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Tviruailstringtree sort multi columns on header click 1 94
Performance of SQL statement 37 147
Dev express lookupcombo 3 64
Problem working with dynamic array - help 2 48
Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question