[newbie] How to plot to drawing_area
- From: "Individual . ." <individual mi cl>
- To: gtk-app-devel-list gnome org
- Subject: [newbie] How to plot to drawing_area
- Date: Sat, 1 Feb 2003 18:09:48 -0300
Hi.
I started learning a little gtk+2.0 a few days ago. I liked it a lot,
it seems within the reach of an amateur programmer like myself.
Often a good way to learn a new language/library/framework is to set
oneself a goal, and then learn all that is necessary along the way to
achieve that goal.
I understand the basic concept of callback functions, and packing
widgets, and connecting the signals.
I decided it would be great if I could learn how to plot an image to a
window, pixel by pixel. Getting the image is no problem at all, since
I wrote a simple c++ class that uses libpng
(<http://pngwriter.sourceforge.net/>).
The plotting part is what is holding me up.
I have looked at the scribble program that is given as an example, but
I must say that the lack of a chapter on drawing_area widgets in the
tutorial isn't helping me one bit!
I wonder if someone would be kind enough to point me to some code, that
showed me how to set the foreground colour (with a simple RGB triplet)
and then plot a given pixel.
Thanks in advance!
Paul
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