[Plplot-general] C++ interface and windows redraw

[Victor M. <vm...@ma...>]

  I've been using plplot for some weeks. Since I prefer C++, I'm using
that interface, but I noticed I couldn't easily ask for the postscript
driver and then specify the output file name so that my program does not
expect an answer from the keyboard. The problem seemed to be that plstream
constructors call plinit(), so when, after the plstream object is created,
I intended to set the filename, I got a segfault. My program was:

#include "plstream.h"
int main(){
  plstream pls(1,1,"psc");
  pls.sfnam("tres.ps");
}

I decided to add a constructor to the plstream class, so that something
like plstream pls(1,1,"psc","tres.ps") works, and consequently
automatically opens an output file. I had to recompile the libraries, but
it worked. If someone knows of a better or easier solution, or if someone
thinks this is a good feature to include in future versions, I'd be glad
to know.


Second. I noticed that if I create two plstream objects, and the second
window is put over the first one in my screen, the first one is erased, so
I cannot see both windows simultaneously (that's why I had to worry about
writing files, by the way). Is that a common problem with the xwin driver,
or there's something in my distribution I could change to fix this?

  Thanks for any comment,
					Victor Munoz