reliably for a long time. In most cases, they will report a size of 0 nowadays, and thus, their size will not affect the other size group members. In effect, size groups will always operate as if this property was true. Use a #GtkStack instead to hide widgets while still having their size taken into account.
SizeGroup.setIgnoreHidden
void setIgnoreHidden(bool ignoreHidden)Sets whether unmapped widgets should be ignored when calculating the size.
Parameters
ignoreHidden | whether unmapped widgets should be ignored when calculating the size |
Deprecated
Measuring the size of hidden widgets has not worked