Issue #544: let to use negative values in double input

diff --git a/src/ModuleBase/ModuleBase_ParamSpinBox.cpp b/src/ModuleBase/ModuleBase_ParamSpinBox.cpp
index 41f697bf6875506aba537e2d6aff7eba253a15db..cce85ab35a9d451db0748d433ab27e9e4f678d1e 100644 (file)
--- a/src/ModuleBase/ModuleBase_ParamSpinBox.cpp
+++ b/src/ModuleBase/ModuleBase_ParamSpinBox.cpp
@@ -162,7 +162,7 @@ bool ModuleBase_ParamSpinBox::hasVariable() const
 
 bool ModuleBase_ParamSpinBox::hasVariable(const QString& theText) const
 {
-  QRegExp varNameMask("[0-9]*\\.?[0-9]+([eE][-+]?[0-9]+)?");
+  QRegExp varNameMask("[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?");
   return !varNameMask.exactMatch(theText);
 }