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. [transfer none]
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