Sets whether the progress bar will show text next to the bar.
The shown text is either the value of the text
property or, if that is NULL, the fraction value,
as a percentage.
To make a progress bar that is styled and sized suitably for containing
text (even if the actual text is blank), set show-text to
TRUE and text to the empty string (not NULL).
Sets whether the progress bar will show text next to the bar. The shown text is either the value of the text property or, if that is NULL, the fraction value, as a percentage.
To make a progress bar that is styled and sized suitably for containing text (even if the actual text is blank), set show-text to TRUE and text to the empty string (not NULL).