The fallback will be used if this cursor is not available on a given
GdkDisplay. For named cursors, this can happen when using nonstandard
names or when using an incomplete cursor theme. For textured cursors,
this can happen when the texture is too large or when the GdkDisplay
it is used on does not support textured cursors.
Returns the fallback for this @cursor.
The fallback will be used if this cursor is not available on a given GdkDisplay. For named cursors, this can happen when using nonstandard names or when using an incomplete cursor theme. For textured cursors, this can happen when the texture is too large or when the GdkDisplay it is used on does not support textured cursors.