Retrieves the text displayed superimposed on the progress bar,
if any, otherwise %NULL. The return value is a reference
to the text, not a copy of it, so will become invalid
if you change the text in the progress bar.
Return: text, or %NULL; this string is owned by the widget
and should not be modified or freed.
Retrieves the text displayed superimposed on the progress bar, if any, otherwise %NULL. The return value is a reference to the text, not a copy of it, so will become invalid if you change the text in the progress bar.
Return: text, or %NULL; this string is owned by the widget and should not be modified or freed.