If touch_only is TRUE, gesture will only handle events of type GDK_TOUCH_BEGIN, GDK_TOUCH_UPDATE or GDK_TOUCH_END If FALSE, mouse events will be handled too.
whether gesture handles only touch events
3.14
If touch_only is TRUE, gesture will only handle events of type GDK_TOUCH_BEGIN, GDK_TOUCH_UPDATE or GDK_TOUCH_END If FALSE, mouse events will be handled too.