Header/Viewport: Manually trigger the signals_changed event at construction

[pulseview.git] / pv / view / header.cpp

diff --git a/pv/view/header.cpp b/pv/view/header.cpp
index af67abddd899f401b01eeb3d8665e271f959547c..a7902521216a90655ba708669ab5b36b2886f52b 100644 (file)
--- a/pv/view/header.cpp
+++ b/pv/view/header.cpp
@@ -59,6 +59,10 @@ Header::Header(View &parent) :
 
        connect(&_view, SIGNAL(signals_moved()),
                this, SLOT(on_signals_moved()));
+
+       // Trigger the initial event manually. The default device has signals
+       // which were created before this object came into being
+       on_signals_changed();
 }
 
 QSize Header::sizeHint() const