🚀 go-pugleaf

In article <1992Nov7.204220.21840@cs.wisc.edu>, you write:

> I live a simple life. All I want to do is put a rectangle of some
> sort(I'm not picky) into a graphicBlock that I have in my application,
> which was generated by ibuild (3.0.1).
>
> How do I do it? Please, somebody tell me.
>
>
> In my current attempt, I've written the following, which core dumps:
> ----------------
> #include <InterViews/panner.h>
> #include <Unidraw/Graphic/grblock.h>
> #include <Unidraw/Graphic/picture.h>
> #include <Unidraw/Graphic/polygons.h>
> #include <InterViews/strbrowser.h>
> #include <InterViews/button.h>
> #include "Viz.h"
> #include <InterViews/2.6/_enter.h>
>
> Viz::Viz(const char* name) : Viz_core(name)
> {
>     int x,y;
>     x = y = 100;
>     PSBrush *p = new PSBrush(65535,10);
>     SF_Rect *r = new SF_Rect(100,100,200,200);
>     Picture *pic = new Picture;
>
>     r->FillBg(1);
>     r->SetBrush(p);
>     pic->Append(r);
>     graphic->SetGraphic(pic);
> }
>
> This runs just fine, but dumps somewhere after the MonoScene is
> inserted into the application. Why?

Your coredump is probably the result of creating graphics without
specifying a complete set of graphics state.  More specifically, you
never set your SF_Rect's (or Picture's) foreground and background
colors.  You can specify such graphics state either by supplying the
constructor with a graphic (like stdgraphic in
include/Unidraw/globals.h) from which to copy graphics state or by
calling SetColors, SetBrush, etc. explicitly.

--
John Vlissides / IBM T.J. Watson Research / vlis@watson.ibm.com