Fields
- ext_data: *XExtData
- display: *_XDisplay
- root: Window
- width: s32
- height: s32
- mwidth: s32
- mheight: s32
- ndepths: s32
- depths: *Depth
- root_depth: s32
- root_visual: *Visual
- default_gc: GC
- cmap: Colormap
- white_pixel: u64
- black_pixel: u64
- max_maps: s32
- min_maps: s32
- backing_store: s32
- save_unders: s32
- root_input_mask: s64