Sets a SourceStyleScheme to be used by the buffer and the view.
Note that a SourceStyleScheme affects not only the syntax highlighting, but also other SourceView features such as highlighting the current line, matching brackets, the line numbers, etc.
Instead of setting a null scheme, it is better to disable syntax highlighting with
set_highlight_syntax, and setting the
SourceStyleScheme with the "classic" or "tango" ID, because those two style schemes
follow more closely the GTK+ theme (for example for the background color).
The buffer holds a reference to scheme.
| this |
a SourceBuffer. |
| scheme |
a SourceStyleScheme or null. |