New topic: Sending esc codes to a parallel printer
<http://forums.realsoftware.com/viewtopic.php?t=47105> Page 1 of 1 [ 5 posts ] Previous topic | Next topic Author Message Josefo Post subject: Sending esc codes to a parallel printerPosted: Wed Feb 27, 2013 5:24 pm Joined: Wed Feb 27, 2013 4:57 pm Posts: 3 Dear all: I'm writing a program in Real Studio 2011 r4 (Win XP SP3) using a POS printer, an Epson TM-U220PB dot-matrix printer and I'm already printing on it via the g.drawstring (characters look very big but it´s working). Now I need to send ESC CODES to change font and in general to have more control about the format of my printing. The problem is that I can't find anywhere an example of sending esc codes (epos) to a parallel printer from Real Studio! An example would be very appreciated. I donât need anything complicated; even direct printing would be great but need a way to send the codes to change the font/size. I already used the PageSetupDIalog dialog to setup the printer; it works excellent with almost all of the parameters bot not with the font/font's size selection. When trying to configure the printer from windowâs control panel it let me choose any font from the printer and even print a test page with it but it warns me saying that choosing fonts or changing the font size must be done from inside my application, not from the control panel, and it only could be done sending esc codes. Please help me ! Top timhare Post subject: Re: Sending esc codes to a parallel printerPosted: Wed Feb 27, 2013 7:47 pm Joined: Fri Jan 06, 2006 3:21 pm Posts: 12088 Location: Portland, OR USA A) You don't need to send escape codes, just change g.TextSize and/or g.Bold. The windows driver will do the right thing. B) If you want to print direct, you can declare into winspooldrv.dll. Top Josefo Post subject: Re: Sending esc codes to a parallel printerPosted: Wed Feb 27, 2013 8:26 pm Joined: Wed Feb 27, 2013 4:57 pm Posts: 3 Timhare, thanks a lot for your suggestion. Sincerely I don't have any idea about how to deal with "winspooldrv.dll", but first I'll try your g.TextSize idea because I don't really want to change the font, just the size. Actually when I print something from my aplication to the printer it uses a font size by default that allows me to print just ... let say about 20 characters long by line, but I need to fit 40 characters in an line and I know the printer is perfectly capable of doing that because I saw it when working with the old software that I'm replacing (developed by someone else in FoxPro I must say). I don't have the printer with me right now but tomorrow's first thing in the morning I´ll try. I think that will do it. Just another thing, do you know how to send a tab? I'm printing a 3 column listbox and I would like to keep that format, the first column is "Quantity", the second "Article" and the third is "Price", it's a restaurant ticket. Thanks again ! Top timhare Post subject: Re: Sending esc codes to a parallel printerPosted: Thu Feb 28, 2013 12:48 am Joined: Fri Jan 06, 2006 3:21 pm Posts: 12088 Location: Portland, OR USA In RB, everything is graphics. Basically pixels. You specifiy the X and Y coordinates of everything. Everything with the same Y coordinate is on a line. Assuming the default 72 dots/inch, if you want 6 lines/inch, you would print a line and then add 12 (72/6) to the Y coordinate for the next line. To line text up on a "tab stop", use the same X coordinate for the data that goes in that column. For example Y = 12 X = 0 g.DrawString quantity, X, Y X = 72 // 1 inch g.DrawString description, X, Y X = 252 // 3.5 inch g.DrawString price, X, Y Y = Y + 12 // next line X = 0 g.DrawString quantity2, X, Y X = 72 g.DrawString description2, X, Y X = 252 g.DrawString price2, X, Y Y = Y + 12 //etc Top Josefo Post subject: Re: Sending esc codes to a parallel printerPosted: Thu Feb 28, 2013 4:56 pm Joined: Wed Feb 27, 2013 4:57 pm Posts: 3 Now I understand, I'm going to modify my program and I will do it this way. Thank you very much, really appreciated! Stay cool! Top Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending Page 1 of 1 [ 5 posts ]
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