When the output card is active, disable the controls to change the master clock ...

diff --git a/glwidget.cpp b/glwidget.cpp
index 34943389e6aa0b3429ea8d8073f1a374a6ea9e46..ae4b62f09da9b1d17039c84dcb8f4373d561af08 100644 (file)
--- a/glwidget.cpp
+++ b/glwidget.cpp
@@ -320,7 +320,10 @@ void GLWidget::show_preview_context_menu(unsigned signal_num, const QPoint &pos)
        // And a master clock selector.
        QAction *master_clock_action = new QAction("Use as master clock", &menu);
        master_clock_action->setCheckable(true);
-       if (global_mixer->get_master_clock() == signal_num) {
+       if (global_mixer->get_output_card_index() != -1) {
+               master_clock_action->setChecked(false);
+               master_clock_action->setEnabled(false);
+       } else if (global_mixer->get_master_clock() == signal_num) {
                master_clock_action->setChecked(true);
                master_clock_action->setEnabled(false);
        }