void gtk_widget_queue_resize ( GtkWidget* widget )
This function is only for use in widget implementations.
Flags a widget to have its size renegotiated; should
be called when a widget for some reason has a new size request.
For example, when you change the text in a
queues a resize to ensure there’s enough space for the new text.
Note that you cannot call
gtk_widget_queue_resize() on a widget
from inside its implementation of the GtkWidgetClass::size_allocate
virtual method. Calls to
gtk_widget_queue_resize() from inside
GtkWidgetClass::size_allocate will be silently ignored.