Re: bug in Cairo or Gtk - peculiar behaviour on resizing or exposing window

2010-11-14 Thread N James Bridge
On Sun, 2010-11-14 at 12:48 +, James Morris wrote: > On 14 November 2010 12:40, N James Bridge wrote: > > Thanks for input. I assume you did see the same error in drawing - some > > areas inside the drawing come out solid black? > > Yes. > > > I will have to look up valgrind. All of this is

Re: bug in Cairo or Gtk - peculiar behaviour on resizing or exposing window

2010-11-14 Thread James Morris
On 14 November 2010 12:40, N James Bridge wrote: > Thanks for input. I assume you did see the same error in drawing - some > areas inside the drawing come out solid black? Yes. > I will have to look up valgrind. All of this is a big learning exercise! Valgrind sometimes spots initialization err

Re: bug in Cairo or Gtk - peculiar behaviour on resizing or exposing window

2010-11-14 Thread N James Bridge
On Sun, 2010-11-14 at 11:17 +, James Morris wrote: > On 13 November 2010 22:18, N James Bridge wrote: > > I am hoping someone will have the time to look at this. I have been > > developing a gtk/cairo program to draw views of the Mandelbrot set. ... > > I am using gtk2-2.22.0-1.fc14.1.x86_64,

Re: bug in Cairo or Gtk - peculiar behaviour on resizing or exposing window

2010-11-14 Thread James Morris
On 13 November 2010 22:18, N James Bridge wrote: > I am hoping someone will have the time to look at this. I have been > developing a gtk/cairo program to draw views of the Mandelbrot set. I > wanted to show how the usual iteration progressed for an arbitrary > starting point; it worked but occasi

bug in Cairo or Gtk - peculiar behaviour on resizing or exposing window

2010-11-14 Thread N James Bridge
I am hoping someone will have the time to look at this. I have been developing a gtk/cairo program to draw views of the Mandelbrot set. I wanted to show how the usual iteration progressed for an arbitrary starting point; it worked but occasionally seemed to misbehave. Below is a cut-back version wh