[Octave-bug-tracker] [bug #44806] MXE Octave freezes after print command

[Rik]

Follow-up Comment #13, bug #44806 (project octave):

Documentation from gl2ps:


 2.8.2  Description and arguments
gl2psBeginViewport and gl2psEndViewport permit to output different viewports3
in the output stream. Each viewport is sorted separately and has its own
background frame. The argument given to gl2psBeginViewport specifies the
viewport (obtained for example with a call to glGetIntegerv(GL_VIEWPORT,
viewport)).
2.8.3  Return value
gl2psBeginViewport returns:

GL2PS_UNINITIALIZED
    if the library is not initialized;
GL2PS_ERROR
    if an error occurred;
GL2PS_SUCCESS
    otherwise.

gl2psEndViewport returns:

GL2PS_NO_FEEDBACK
    if the feedback buffer is empty;
GL2PS_OVERFLOW
    if the size of the feedback buffer given to gl2psBeginPage is not large
enough;
GL2PS_UNINITIALIZED
    if gl2psEndViewport is called when the library is not initialized;
GL2PS_ERROR
    if an error occurred;
GL2PS_SUCCESS
    otherwise. 


Another possibility is that we should be doing error checking.  Maybe one of
the three gl* functions is returning an error and we should be aborting rather
than continuing.


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