Update docs with MouseScrollLeft and MouseScrollRight.

docs/events/click.md

@@ -20,5 +20,7 @@ See [MouseEvent][textual.events.MouseEvent] for the list of properties and metho
 - [MouseEvent][textual.events.MouseEvent]
 - [MouseMove](mouse_move.md)
 - [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollRight](mouse_scroll_right.md)
 - [MouseScrollUp](mouse_scroll_up.md)
 - [MouseUp](mouse_up.md)

docs/events/enter.md

@@ -9,5 +9,7 @@
 - [MouseDown](mouse_down.md)
 - [MouseMove](mouse_move.md)
 - [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollRight](mouse_scroll_right.md)
 - [MouseScrollUp](mouse_scroll_up.md)
 - [MouseUp](mouse_up.md)

docs/events/leave.md

@@ -9,5 +9,7 @@
 - [MouseDown](mouse_down.md)
 - [MouseMove](mouse_move.md)
 - [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollRight](mouse_scroll_right.md)
 - [MouseScrollUp](mouse_scroll_up.md)
 - [MouseUp](mouse_up.md)

docs/events/mouse_down.md

@@ -16,5 +16,7 @@ See [MouseEvent][textual.events.MouseEvent] for the full list of properties and
 - [MouseEvent][textual.events.MouseEvent]
 - [MouseMove](mouse_move.md)
 - [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollRight](mouse_scroll_right.md)
 - [MouseScrollUp](mouse_scroll_up.md)
 - [MouseUp](mouse_up.md)

docs/events/mouse_move.md

@@ -16,5 +16,7 @@ See [MouseEvent][textual.events.MouseEvent] for the full list of properties and
 - [MouseDown](mouse_down.md)
 - [MouseEvent][textual.events.MouseEvent]
 - [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollRight](mouse_scroll_right.md)
 - [MouseScrollUp](mouse_scroll_up.md)
 - [MouseUp](mouse_up.md)

docs/events/mouse_scroll_down.md

@@ -16,5 +16,7 @@ See [MouseEvent][textual.events.MouseEvent] for the full list of properties and
 - [MouseDown](mouse_down.md)
 - [MouseEvent][textual.events.MouseEvent]
 - [MouseMove](mouse_move.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollRight](mouse_scroll_right.md)
 - [MouseScrollUp](mouse_scroll_up.md)
 - [MouseUp](mouse_up.md)

docs/events/mouse_scroll_left.md

@@ -0,0 +1,22 @@
+---
+title: MouseScrollLeft
+---
+
+::: textual.events.MouseScrollLeft
+    options:
+      heading_level: 1
+
+See [MouseEvent][textual.events.MouseEvent] for the full list of properties and methods.
+
+## See also
+
+- [Click](click.md)
+- [Enter](enter.md)
+- [Leave](leave.md)
+- [MouseDown](mouse_down.md)
+- [MouseEvent][textual.events.MouseEvent]
+- [MouseMove](mouse_move.md)
+- [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollRight](mouse_scroll_right.md)
+- [MouseScrollUp](mouse_scroll_up.md)
+- [MouseUp](mouse_up.md)

docs/events/mouse_scroll_right.md

@@ -0,0 +1,22 @@
+---
+title: MouseScrollRight
+---
+
+::: textual.events.MouseScrollRight
+    options:
+      heading_level: 1
+
+See [MouseEvent][textual.events.MouseEvent] for the full list of properties and methods.
+
+## See also
+
+- [Click](click.md)
+- [Enter](enter.md)
+- [Leave](leave.md)
+- [MouseDown](mouse_down.md)
+- [MouseEvent][textual.events.MouseEvent]
+- [MouseMove](mouse_move.md)
+- [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollUp](mouse_scroll_up.md)
+- [MouseUp](mouse_up.md)

docs/events/mouse_scroll_up.md

@@ -17,4 +17,6 @@ See [MouseEvent][textual.events.MouseEvent] for the full list of properties and
 - [MouseEvent][textual.events.MouseEvent]
 - [MouseMove](mouse_move.md)
 - [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollRight](mouse_scroll_right.md)
 - [MouseUp](mouse_up.md)

docs/events/mouse_up.md

@@ -17,4 +17,6 @@ See [MouseEvent][textual.events.MouseEvent] for the full list of properties and
 - [MouseEvent][textual.events.MouseEvent]
 - [MouseMove](mouse_move.md)
 - [MouseScrollDown](mouse_scroll_down.md)
+- [MouseScrollLeft](mouse_scroll_left.md)
+- [MouseScrollRight](mouse_scroll_right.md)
 - [MouseScrollUp](mouse_scroll_up.md)

docs/guide/input.md

@@ -262,6 +262,8 @@ If you want your app to respond to a mouse click you should prefer the Click eve
 
 Most mice have a scroll wheel which you can use to scroll the window underneath the cursor. Scrollable containers in Textual will handle these automatically, but you can handle [MouseScrollDown](../events/mouse_scroll_down.md) and [MouseScrollUp](../events/mouse_scroll_up.md) if you want build your own scrolling functionality.
 
+For terminals that support horizontal mouse wheel, Textual sends [MouseScrollLeft](../events/mouse_scroll_left.md) and [MouseScrollRight](../events/mouse_scroll_right.md), and scrollable containers handle them automatically.
+
 !!! information
 
     Terminal emulators will typically convert trackpad gestures into scroll events.