Specifies the direction for GdkEventScroll.
GDK_SCROLL_UP
the window is scrolled up.
GDK_SCROLL_DOWN
the window is scrolled down.
GDK_SCROLL_LEFT
the window is scrolled to the left.
GDK_SCROLL_RIGHT
the window is scrolled to the right.
GDK_SCROLL_SMOOTH
the scrolling is determined by the delta values
in GdkEventScroll. See gdk_event_get_scroll_deltas(). Since: 3.4
Specifies the direction for GdkEventScroll. GDK_SCROLL_UP the window is scrolled up. GDK_SCROLL_DOWN the window is scrolled down. GDK_SCROLL_LEFT the window is scrolled to the left. GDK_SCROLL_RIGHT the window is scrolled to the right. GDK_SCROLL_SMOOTH the scrolling is determined by the delta values in GdkEventScroll. See gdk_event_get_scroll_deltas(). Since: 3.4