Additional Topics > Medical Imaging in IDL > IDL DICOM Reference > IDLffDicomExCfg::IsDirty

# IDLffDicomExCfg::IsDirty

The IDLffDicomExCfg::IsDirty function method can be used to determine if configuration values have been changed since the configuration file was read into the configuration object. This information is useful if you are creating a user interface and want to warn the user to save the configuration values prior to exiting.

## Syntax

Result = Obj->[IDLffDicomExCfg::]IsDirty( )

## Return Value

Returns one of the following:

0 | The configuration in memory has not been changed since it was read in from the configuration file.
1 | The configuration in memory has been changed since it was read in from the configuration file.

## Arguments

None

## Keywords

None

## Version History

6.3 | Introduced