Printing a bitmap

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2 total messages Started by dave Mon, 09 Sep 2002 00:36

#816

Author: dave
Date: Mon, 09 Sep 2002 00:36

10 lines
1445 bytes

Im having trouble with the code to print a bitmap of the form. The program is a single form. Ive tried a book called C++ builder in 21 days and the code is as follows.
Graphics::TBitmap* bitmap = new Graphics::TBitmap;
bitmap->LoadFromFile("c:\\winnt\\winnt.bmp");
Printer()->BeginDoc();
Printer()->Canvas->Draw(20, 20, bitmap);
Printer()->EndDoc();
delete bitmap;

This tries to open up the winnt.bmp file but it returns an error saying that it can't. I need to change the LoadFromFile to a screen capture of the form. Can anyone point me in the right direction....

Re: Printing a bitmap

#818

Author: Joe C. Hecht
Date: Tue, 10 Sep 2002 00:22

26 lines
1958 bytes

Draw, and StretchDraw fail on many printers.

You may also be told to use StretchDIBits(),
however, StretchDIBits() requires about 2000
lines of low level graphics support code to work
well, else many of your customers may receive
blank or garbled pages

If you do not need to deploy your applicaition,
and it will only run on the printer, computer, and
operating system you are using now, then use
StretchDraw().

If you plan to deploy your applicaiton, or you will be
using your application on other printers, computers,
and other versions of Windows, then you will need
to invest in a reliable printing unit. Take a look at
TExcellentImagePrinter, available at:

http://www.code4sale.com/joehecht


Joe
--
Delphi, graphics, and printing specialist available - $35/hr
http://www.code4sale.com/codeit/index.htm

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