From dacd4a4746c985fcf9aedbcee8e3108a6015f1c6 Mon Sep 17 00:00:00 2001
From: vsv <vsv@opencascade.com>
Date: Wed, 25 Jul 2018 17:49:17 +0300
Subject: [PATCH] Issue #2571: Clear error flag if the control is initialized
 from the attribute

---
 src/ModuleBase/ModuleBase_WidgetDoubleValue.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/ModuleBase/ModuleBase_WidgetDoubleValue.cpp b/src/ModuleBase/ModuleBase_WidgetDoubleValue.cpp
index 0adf8f355..2b8325115 100644
--- a/src/ModuleBase/ModuleBase_WidgetDoubleValue.cpp
+++ b/src/ModuleBase/ModuleBase_WidgetDoubleValue.cpp
@@ -179,6 +179,10 @@ bool ModuleBase_WidgetDoubleValue::storeValueCustom()
     // it is important to set the empty text value to the attribute before set the value
     // because setValue tries to calculate the attribute value according to the
     // attribute current text
+    if (aReal->expressionInvalid()) {
+      aReal->setExpressionError("");
+      aReal->setExpressionInvalid(false);
+    }
     aReal->setText("");
     aReal->setValue(mySpinBox->value());
   }
@@ -208,6 +212,10 @@ bool ModuleBase_WidgetDoubleValue::restoreValueCustom()
     ModuleBase_Tools::setSpinText(mySpinBox, aText);
   } else {
     ModuleBase_Tools::setSpinValue(mySpinBox, aRef->isInitialized() ? aRef->value() : 0);
+    if (aRef->isInitialized() && aRef->expressionInvalid()) {
+      aRef->setExpressionError("");
+      aRef->setExpressionInvalid(false);
+    }
   }
   return true;
 }
-- 
2.39.2