set_vhomogeneous
Description:
Sets the `GtkStack` to be vertically homogeneous or not.
If it is homogeneous, the `GtkStack` will request the same height for all its children. If it isn't, the stack may change height when a different child becomes visible.
Parameters:
| this |
a `GtkStack` |
| vhomogeneous |
true to make this vertically homogeneous |