1 files changed, 26 insertions, 10 deletions
diff --git a/library/scrlbar.tcl b/library/scrlbar.tcl
index 4cb95bd..9277160 100644
--- a/library/scrlbar.tcl
+++ b/library/scrlbar.tcl
@@ -128,18 +128,34 @@ bind Scrollbar <End> {
     tk::ScrollToPos %W 1
 }
 }
-if {[tk windowingsystem] eq "aqua"} {
-    bind Scrollbar <MouseWheel> {
-        tk::ScrollByUnits %W v [expr {- (%D)}]
-    }
-    bind Scrollbar <Option-MouseWheel> {
-        tk::ScrollByUnits %W v [expr {-10 * (%D)}]
+switch [tk windowingsystem] {
+    "aqua" {
+	bind Scrollbar <MouseWheel> {
+	    tk::ScrollByUnits %W v [expr {- (%D)}]
+	}
+	bind Scrollbar <Option-MouseWheel> {
+	    tk::ScrollByUnits %W v [expr {-10 * (%D)}]
+	}
+	bind Scrollbar <Shift-MouseWheel> {
+	    tk::ScrollByUnits %W h [expr {- (%D)}]
+	}
+	bind Scrollbar <Shift-Option-MouseWheel> {
+	    tk::ScrollByUnits %W h [expr {-10 * (%D)}]
+	}
     }
-    bind Scrollbar <Shift-MouseWheel> {
-        tk::ScrollByUnits %W h [expr {- (%D)}]
+    "win32" {
+	bind Scrollbar <MouseWheel> {
+	    tk::ScrollByUnits %W v [expr {- (%D / 120) * 4}]
+	}
+	bind Scrollbar <Shift-MouseWheel> {
+	    tk::ScrollByUnits %W h [expr {- (%D / 120) * 4}]
+	}
     }
-    bind Scrollbar <Shift-Option-MouseWheel> {
-        tk::ScrollByUnits %W h [expr {-10 * (%D)}]
+    "x11" {
+	bind Scrollbar <4> {tk::ScrollByUnits %W v -5}
+	bind Scrollbar <5> {tk::ScrollByUnits %W v 5}
+	bind Scrollbar <Shift-4> {tk::ScrollByUnits %W h -5}
+	bind Scrollbar <Shift-5> {tk::ScrollByUnits %W h 5}
     }
 }
 # tk::ScrollButtonDown --