From ce697c610d9d9773559b699acf4b662953255ce3 Mon Sep 17 00:00:00 2001
From: "Charles J. Cliffe" <cj@cubicproductions.com>
Date: Tue, 31 May 2016 17:42:44 -0400
Subject: [PATCH] Missed gain canvas focus for Win7 wheel support

---
 src/visual/GainCanvas.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/visual/GainCanvas.cpp b/src/visual/GainCanvas.cpp
index 409e7de..cb1dce6 100644
--- a/src/visual/GainCanvas.cpp
+++ b/src/visual/GainCanvas.cpp
@@ -194,6 +194,11 @@ void GainCanvas::OnMouseLeftWindow(wxMouseEvent& event) {
 void GainCanvas::OnMouseEnterWindow(wxMouseEvent& event) {
     InteractiveCanvas::mouseTracker.OnMouseEnterWindow(event);
     SetCursor(wxCURSOR_CROSS);
+#ifdef _WIN32
+	if (wxGetApp().getAppFrame()->canFocus()) {
+		this->SetFocus();
+	}
+#endif
 }