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pv::prop::Bool: Do not create a widget if the initial value could not be retrieved
author
Joel Holdsworth
<joel@airwebreathe.org.uk>
Sat, 25 Jan 2014 12:05:38 +0000
(12:05 +0000)
committer
Bert Vermeulen
<bert@biot.com>
Sat, 25 Jan 2014 14:34:00 +0000
(15:34 +0100)
pv/prop/bool.cpp
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diff --git
a/pv/prop/bool.cpp
b/pv/prop/bool.cpp
index ac142fd440403c6b015c441f6e6b1d13ae3923aa..e0e052fc6b2b377c3d580192beda10793d331884 100644
(file)
--- a/
pv/prop/bool.cpp
+++ b/
pv/prop/bool.cpp
@@
-42,15
+42,14
@@
QWidget* Bool::get_widget(QWidget *parent, bool auto_commit)
if (_check_box)
return _check_box;
if (_check_box)
return _check_box;
- _check_box = new QCheckBox(name(), parent);
-
GVariant *const value = _getter ? _getter() : NULL;
GVariant *const value = _getter ? _getter() : NULL;
+ if (!value)
+ return NULL;
- if (value) {
- _check_box->setCheckState(g_variant_get_boolean(value) ?
- Qt::Checked : Qt::Unchecked);
- g_variant_unref(value);
- }
+ _check_box = new QCheckBox(name(), parent);
+ _check_box->setCheckState(g_variant_get_boolean(value) ?
+ Qt::Checked : Qt::Unchecked);
+ g_variant_unref(value);
if (auto_commit)
connect(_check_box, SIGNAL(stateChanged(int)),
if (auto_commit)
connect(_check_box, SIGNAL(stateChanged(int)),