Fix build w/ wxGTK-2.8
http://bugs.debian.org/567238

--- a/tview.cpp
+++ b/tview.cpp
@@ -994,7 +994,7 @@ END_EVENT_TABLE()
 MyCanvas::MyCanvas(wxView *v, wxMDIChildFrame *frame, const wxPoint& pos, const wxSize& size, long style):
  wxScrolledWindow(frame, -1, pos, size, style)
 {
-	SetBackgroundColour(wxColour("WHITE"));
+	SetBackgroundColour(wxColour(wxT("WHITE")));
 	view = v;
 	magnification = 1;
 }