there was a reason it was int

src/axis_edit.cpp

@@ -127,8 +127,8 @@ void AxisEdit::gradientChanged( bool on ) {
 	}
 }
 
-void AxisEdit::modeChanged( Axis::Mode mode ) {
-    if (mode == Axis::Keyboard) {
+void AxisEdit::modeChanged( int index ) {
+    if (index == Axis::Keyboard) {
         mouseBox->setEnabled(false);
         keyBox->setEnabled(true);
     }

src/axis_edit.h

@@ -25,7 +25,7 @@ class AxisEdit : public QDialog {
 	protected slots:
 		//slots for GUI events
 		void gradientChanged( bool on );
-		void modeChanged( Axis::Mode mode );
+		void modeChanged( int index );
 		void transferCurveChanged( int index );
 		void throttleChanged( int index );
 		void accept();