Fix so that you can't right-click on non-signal channels anymore.

[nageru] / glwidget.cpp

diff --git a/glwidget.cpp b/glwidget.cpp
index e7f56b350672a67c0bf78dcbeb8e975651ec20ef..cccfa3af631b6d869255cf8f3b06addc2019c1dc 100644 (file)
--- a/glwidget.cpp
+++ b/glwidget.cpp
@@ -135,7 +135,9 @@ void GLWidget::show_context_menu(const QPoint &pos)
        }
        if (output >= Mixer::OUTPUT_INPUT0) {
                int signal_num = global_mixer->get_channel_signal(output);
-               show_preview_context_menu(signal_num, pos);
+               if (signal_num != -1) {
+                       show_preview_context_menu(signal_num, pos);
+               }
        }
 }