Retrieves the GdkWindow corresponding to an area of the text view;
possible windows include the overall widget window, child windows
on the left, right, top, bottom, and the window that displays the
text buffer. Windows are NULL and nonexistent if their width or
height is 0, and are nonexistent before the widget has been
realized.
Retrieves the GdkWindow corresponding to an area of the text view; possible windows include the overall widget window, child windows on the left, right, top, bottom, and the window that displays the text buffer. Windows are NULL and nonexistent if their width or height is 0, and are nonexistent before the widget has been realized.