gboolean gtk_popover_get_pointing_to ( GtkPopover* popover, GdkRectangle* rect )
If a rectangle to point to has been set, this function will
TRUE and fill in
rect with such rectangle, otherwise
it will return
FALSE and fill in
rect with the attached
Location to store the rectangle.
The argument will be set by the function. The data is owned by the caller of the function.