Property
StButton:checked
Description [src]
If StButton:toggle-mode is TRUE, indicates if the StButton is toggled
“on” or “off”.
When the value is TRUE, the StButton will have the checked CSS
pseudo-class set.
          Type:gboolean
| Default value | FALSE | 
| Getter method | st_button_get_checked() | 
| Setter method | st_button_set_checked() |