Get the GdkWindow of the gutter. The window will only be available when the gutter has at least one, non-zero width, cell renderer packed. Since 2.8
the GdkWindow of the gutter, or NULL if the gutter has no window.
See Implementation
Get the GdkWindow of the gutter. The window will only be available when the gutter has at least one, non-zero width, cell renderer packed. Since 2.8