Header/Viewport: Manually trigger the signals_changed event at construction

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

diff --git a/pv/view/viewport.cpp b/pv/view/viewport.cpp
index e9a1442217d7bc1bd600f6432e0002c7ed0543e3..3b06cf9e85e0bc31a5c8f4e7edba38be8aaaa119 100644 (file)
--- a/pv/view/viewport.cpp
+++ b/pv/view/viewport.cpp
@@ -49,6 +49,10 @@ Viewport::Viewport(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();
 }
 
 int Viewport::get_total_height() const