Thank you! David.
You’re right. I made a funny mistake 
. The paper size is 262mm * 185mm.
From the wxWidget document, I found that wxPrintout class has both GetPPIPrinter() and GetPPIScreen() functions. I think they must be helpful for me to get the solution, but I got the retruned value (0,0) from the both functions although they are called after PageSetup and PrinterSetup.
I know the “math” you told me. But I think it is the conversion between “dot” and “mm” (or “inch”). What about “dot” and “pixel”? Or they are totally un-convert-able?
I’m under windows xp (
).
2009-03-27
···
artman328
发件人： David Woods
发送时间： 2009-03-27 23:02:21
收件人： wxpython-users
抄送：
主题： RE: RE: [wxpython-users] Printing solution, any idea?
Can you tell me how to determine the pixel size of the window corresponded to the paper size?
Say I have a printer with 180 dpi resolution, is there a method to convert the size between the paper’s
mm size and window’s pixel size?
It’s called math. You say your paper has a width of 2620mm. Divide by 25.4 mm/inch = 103.15 inches. (Are you sure you don’t mean 262mm, for 10.3 inches, a much more reasonable size for piece of paper?) Or you could go the other way, 180 dots per inch divided by 25.4 mm per inch = 7.087 dots per mm.
David
-----Original Message-----
From:
wxpython-users-bounces+dwoods=wcer.wisc.edu@lists.wxwidgets.org [mailto:wxpython-users-bounces+dwoods=wcer.wisc.edu@lists.wxwidgets.org] On Behalf Of artman328
Sent: Friday, March 27, 2009 9:39 AM
To: wxpython-users
Subject: Re: RE: [wxpython-users] Printing solution, any idea?
2009-03-27
artman328
发件人： David Woods
发送时间：
2009-03-27 22:23:45
收件人：
wxpython-users
抄送：
主题： RE: [wxpython-users] Printing solution, any idea?
Thanks for your answer!
I made the texts into bitmaps just for draging them to get the right position.
I “draw” the texts on the window when I’ve got the right pos.
Can you tell me how to determine the pixel size of the window corresponded to the paper size?
Say I have a printer with 180 dpi resolution, is there a method to convert the size between the paper’s mm size and window’s pixel size?
Thanks
I want to print some contents on a paper on which some contents are pre-
printed. I need to place the to-be-printed contents on the paper
precisely. I’ve made the contents into bitmap so I can drag and drop them
to the right places.
The size of the paper I’m printing on is 2620mm in width and 1850mm in
height. How can I get the pixel size of my scroll window corresponded to
the size of the paper? For I want the font size to be the same to the pre-
printed contents, I “must not” scale the to-be-printed window. Is that
true?
Scaling after drawing on your device context would alter the apparent size
of your fonts, if I understand how things work.
However, you should be able to determine the printer resolution from
wxPrintout.GetPPIPrinter() so you can size your bitmap prior to drawing your
text on it. Then no resize will be necessary, and your fonts should be the
correct size.
David
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