X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fmainwindow.cpp;h=2558cb07692fe497e87d262fad574bc81ad70bfd;hb=26f209b713171014a4f6dc3546b64bf691727cfd;hp=1a05907c9c1a4470be862fdf2691887411b915e3;hpb=744aa24fc5a7084461e4e70595b96f1c3eac65e4;p=pulseview.git

diff --git a/pv/mainwindow.cpp b/pv/mainwindow.cpp
index 1a05907..2558cb0 100644
--- a/pv/mainwindow.cpp
+++ b/pv/mainwindow.cpp
@@ -74,6 +74,7 @@ using std::cerr;
 using std::endl;
 using std::list;
 using std::map;
+using std::max;
 using std::pair;
 using std::shared_ptr;
 using std::string;
@@ -257,7 +258,8 @@ void MainWindow::export_file(shared_ptr<OutputFormat> format,
 		const pv::util::Timestamp& start_time = view_->cursors()->first()->time();
 		const pv::util::Timestamp& end_time = view_->cursors()->second()->time();
 
-		const uint64_t start_sample = start_time.convert_to<double>() * samplerate;
+		const uint64_t start_sample =
+			std::max((double)0, start_time.convert_to<double>() * samplerate);
 		const uint64_t end_sample = end_time.convert_to<double>() * samplerate;
 
 		sample_range = std::make_pair(start_sample, end_sample);
@@ -880,8 +882,11 @@ void MainWindow::device_selected()
 {
 	// Set the title to include the device/file name
 	const shared_ptr<devices::Device> device = session_.device();
-	if (!device)
+
+	if (!device) {
+		main_bar_->reset_device_selector();
 		return;
+	}
 
 	const string display_name = device->display_name(device_manager_);
 	setWindowTitle(tr("%1 - PulseView").arg(display_name.c_str()));