Re: [Plplot-devel] Cygwin - for the next release?

[Alan W. I. <ir...@be...>]

On 2013-09-16 20:01-0000 Arjen Markus wrote:

> [I said]
>> Anyhow, try all the interactive devices (which the test_interactive target does for you
>> as well) and see which you like the best in terms of speed and font choice.
>>
>
> xcairo is slow as well, but qtwidget does not work. I get the message:
>
> QWidget: Cannot create a QWidget when no GUI is being used

I did a google search for that particular error message.  There were a
number of hits, but they all seemed to be concerned with misusing the
Qt4 libraries on Unix, e.g., forgetting to use

#include <QApplication>

But we obviously do that (see include/qt.h), and we have no such
trouble on Linux so I don't think our code misuses Qt4 at all.
Therefore, I have no idea why you are getting this run-time error
message on Cygwin.

The only faint possibility I can think of is you might need to install
some additional Qt4 component.  But I am virtually positive that would
generate a cmake WARNING message so I suggest you double check the
cmake command output (cmake.out) for any such messages concerning Qt
and also check your Qt4 installation for consistency, i.e. all versions
the same, no additional Qt4 installations interfering, etc.

If those checks don't give you any ideas, then you should also
obviously check on the Cygwin mailing list although my google
searching above found nothing Cygwin-specific about the above error
message.

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).
__________________________

Linux-powered Science
__________________________