Drop AnchorLayout, merge its features into FixedLayout.
#!/usr/bin/env python3
import demobase
from tuikit.layouts.grid import GridLayout
from tuikit.widgets.label import Label
l1 = Label('Hello')
l1.sizemin.update(10, 1)
grid = GridLayout()
grid.add(l1, 1, 1)
grid.update(10, 10)
print(grid._grid_size)
print(grid._grid)
for row in range(grid.row_count):
for col in range(grid.column_count):
w = grid.get_widget_at(row, col)
name = w.name if w else '--'
print(name.center(16), end='')
print()
print(l1.pos)
print(l1.size)