GTK: change a range of text style in textview

Question

I am writing a C application in Ubuntu using gtk+2.0.

I have a textview to disply chat messages. Every message comes below the time it's sent.

What I want to do is use different font style(e.g. color) to display them.

I find these font chooser and color chooser but I haven't found how to use them yet.

Can someone give me some advice, or better, examples?

Answer 1

The text shown in a text view is represented by a GtkTextBuffer. To change the appearance of one segment of the text buffer, you create a GtkTextTag, for example using gtk_text_buffer_create_tag(), set the font and colors as you like and apply the tag with gtk_text_buffer_apply_tag() on a range of the text buffer identified by start and end iterators.

It may be worth to have a look at the Gtk+ manual, which has a section that describes how the different components work together.