Hello,
I'm new to GTK+ programming and I may have to do some custom drawing. I have
gone through the tutorial for DrawingArea at
http://library.gnome.org/devel/gtk-tutorial/stable/x2472.html and did
everything as written there, yet my window remains the default gray when
compiled on Ubuntu 9.04. So the tutorials directives already don't work!
I've made sure it's not the exposing of the pixmap by always copying the entire
pixmap, so I suspect the graphics context isn't honored. I haven't yet
understood the default gcs but I also did this:
gc=gdk_gc_new_with_values(pixmap,&values,values_mask); for which I defined a
GdkGCValues structure with foreground.r.../g.../b...=0 and background.~=65535
and an appropriate mask. Yet the window remains gray.
In particular gdk_draw_rectangle and gdk_draw_line don't have any visual effect.
Regarding GdkColor s (for graphic contexts fore- and background), what is an
allocated color?
I've noticed that the configure_event gets fired whenever my window (the window
from above tutorial link) gets partially hidden, moved or selected rather than
the expose_event. I thought the configure_event gets fired only when the window
is resized, according to the tutorial? That would be less cpu and memory
bandwidth-consuming :-)
Summarised I need help to get a primitive visible in my window in a custom
color.
Thanks for any help in advance!
Lars
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