🚀 go-pugleaf

In article <1k1886INNbek@iguana.cis.ohio-state.edu>, guzman@cis.ohio-state.edu (jonatan guzman) writes:
|> ...well, just about!
|> 
|> I have a program that needs to print a number of documents, and needs to change
|> the mode (landscape/portrait) depending on the document. Anybody out there 
|> know how to do this?

There are two basic approaches:

   1) Always plot in what is essentially portrait mode and tell the printer
      driver to flip into Portrait or Landscape mode via a call to
      ExtDeviceMode().  See documentation for that call for more info.

   2) Always assume that the printer is in Portrait mode and setup your
      mapping mode to give the effect of portrait or landscape.

I've done it both ways.  (1) may be easier if you've already got the graphics
code written and it makes hard to change assumptions about the mapping mode.
(2) can be pretty powerful since you can do fancy (albeit mostly useless :-)
things like printing upside-down and backwards by altering your window and
viewport mapping.

I'm pretty sure that a printer driver can only be flipped between Portrait
and Landscape mode between printer jobs.  So if you have a single print
job where different pages need different orientations then you have to use
the second approach.


|> 
|> As long as we're on the printing subject, who knows how to determine how many
|> lines of x point size, z facename print will fit on a given page size? the
|> page size is determined via the GetDeviceCaps(hDC, HORZRES/VERTRES) function.

Select the desired font in the DC and use GetTextMetrics() to get the
LOGFONT data for the text.  The combination of lfHeight + lfExternalLeading
is commonly used for the line height.  Note that this value will be in
logical units (the same as device units if you've left the DC in MM_TEXT
mapping mode).



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