X-Git-Url: http://git.code-monkey.de/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fdecodetrace.cpp;h=7bb62b2b288703c69dc9f725fad7cd43e071daf5;hp=36e7a10458a0c9467740f5edf770177199268e2f;hb=ff59fa2c05db46e78c7fd0240223664fe0b2ad9b;hpb=818f617924d2ed393cadd362fdafbd9d4288848f

diff --git a/pv/view/decodetrace.cpp b/pv/view/decodetrace.cpp
index 36e7a10..7bb62b2 100644
--- a/pv/view/decodetrace.cpp
+++ b/pv/view/decodetrace.cpp
@@ -642,13 +642,17 @@ void DecodeTrace::create_decoder_form(int index,
 	const srd_decoder *const decoder = dec->decoder();
 	assert(decoder);
 
+	const bool decoder_deletable = index > 0;
+
 	pv::widgets::DecoderGroupBox *const group =
 		new pv::widgets::DecoderGroupBox(
-			QString::fromUtf8(decoder->name));
+			QString::fromUtf8(decoder->name), nullptr, decoder_deletable);
 	group->set_decoder_visible(dec->shown());
 
-	delete_mapper_.setMapping(group, index);
-	connect(group, SIGNAL(delete_decoder()), &delete_mapper_, SLOT(map()));
+	if (decoder_deletable) {
+		delete_mapper_.setMapping(group, index);
+		connect(group, SIGNAL(delete_decoder()), &delete_mapper_, SLOT(map()));
+	}
 
 	show_hide_mapper_.setMapping(group, index);
 	connect(group, SIGNAL(show_hide_decoder()),