char* gtk_text_iter_get_text ( const GtkTextIter* start, const GtkTextIter* end )
Returns text in the given range.
If the range
contains non-text elements such as images, the character and byte
offsets in the returned string will not correspond to character and
byte offsets in the buffer. If you want offsets to correspond, see
Iterator at end of a range.
The data is owned by the caller of the method.