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    GObject
    ╰── GInitiallyUnowned
        ╰── GtkObject
            ╰── GtkWidget
                ╰── GtkDrawingArea
                    ╰── GtkSpinner
A GtkSpinner widget displays an icon-size spinning animation. It is often used as an alternative to a GtkProgressBar for displaying indefinite activity, instead of actual progress.
To start the animation, use gtk_spinner_start(), to stop it
use gtk_spinner_stop().
GtkWidget *
gtk_spinner_new (void);
Returns a new spinner widget. Not yet started.
Since: 2.20
void
gtk_spinner_start (GtkSpinner *spinner);
Starts the animation of the spinner.
Since: 2.20
void
gtk_spinner_stop (GtkSpinner *spinner);
Stops the animation of the spinner.
Since: 2.20
“cycle-duration” style property  “cycle-duration”           guint
The duration in milliseconds for the spinner to complete a full cycle.
Owner: GtkSpinner
Flags: Read
Allowed values: >= 500
Default value: 1000
Since: 2.20
“num-steps” style property  “num-steps”                guint
The number of steps for the spinner to complete a full loop. The animation will complete a full cycle in one second by default (see the “cycle-duration” style property).
Owner: GtkSpinner
Flags: Read
Allowed values: >= 1
Default value: 12
Since: 2.20