X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=gtk2_ardour%2Fcanvas-program-change.cc;fp=gtk2_ardour%2Fcanvas-program-change.cc;h=61d043e18485000ceb3612b426378b3b5d26553a;hb=f03a87a132feb525a743de675d0439e981ab329a;hp=7b3fb302bd9540ec99782b99da20a1a8f8a253f4;hpb=bc89fe0147c04b67141936d109c00dfd4d69cc4b;p=ardour.git

diff --git a/gtk2_ardour/canvas-program-change.cc b/gtk2_ardour/canvas-program-change.cc
index 7b3fb302bd..61d043e184 100644
--- a/gtk2_ardour/canvas-program-change.cc
+++ b/gtk2_ardour/canvas-program-change.cc
@@ -29,3 +29,22 @@ CanvasProgramChange::~CanvasProgramChange()
 {
 }
 
+bool
+CanvasProgramChange::on_event(GdkEvent* ev)
+{
+	cerr << "CanvasProgramChange::on_event(GdkEvent* ev) type " << ev->type << endl;
+	switch (ev->type) {
+	case GDK_SCROLL:
+		if (ev->scroll.direction == GDK_SCROLL_UP) {
+			cerr << "increasing program" <<  endl;
+			return true;
+		} else if (ev->scroll.direction == GDK_SCROLL_DOWN) {
+			cerr << "decreasing program" <<  endl;
+			return true;
+		} 
+	default:
+		break;
+	}
+	
+	return false;
+}