ShowQueryValues

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The showQueryValues() method indicates if the query should be active in the
dialog. If the user must access the query in the dialog, override this method and
return true.

public boolean showQueryValues()
{
  return true;
}

This method should now include the information stored in the queryRun object.
Do this by adding the result of the queryRun.pack() method to the container:

public container pack()
{
  return [#CurrentVersion, queryRun.pack()];
}

When combining dialog fields with a query, the first container still contains the
#CurrentList macro:

public container pack()
{
  return [#CurrentVersion, #CurrentList,
  queryRun.pack()];
}

The unpack() method re-initializes the queryRun object from the saved
information. Do this as shown by the following content.

public boolean unpack(container _packedClass)
{
Version version = RunBase::getVersion(_packedClass);
container packedQuery;
switch (version)
{case #CurrentVersion:
[version, packedQuery] = _packedClass;
if (packedQuery)
{
queryRun = new QueryRun(packedQuery);
}
break;
default :
return false;
}
return true;
}