Creating a form for lookup

The following code is to performing form lookup for a field on another form..

Step 1 : Create a form (EmplIdLookupForm) with the required fields(Lookup form)

 

  - Override the form level init() and run() as

void init()

{

    ;

    super();

    element.selectMode(emplTable_EmplId);

}

public void run()

{

    FormStringControl callingControl = SysTableLookup::getCallerStringControl(element.args());

    boolean filterLookup;

    ;

    filterLookup = SysTableLookup::filterLookupPreRun(callingControl, emplTable_EmplId, emplTable_ds);

    super();

    SysTableLookup::filterLookupPostRun(filterLookup, callingControl.text(), emplTable_EmplId, emplTable_ds);

}

- Override the forms DataSource Level init() as

void init()

{

    Query   query = new Query();

    ;

    super();

    query.addDataSource(tablenum(EmplTable));

    this.query(query);

}

Step 2 : Override the Lookup caller form field's Lookup() with following code

FormRun formRun;

    Args args;

    ;

    args = new Args(formstr(EmplIdLookupForm));

    args.caller(this);

    formRun = ClassFactory::formRunClassOnClient(args);

    formRun.init();

    this.performFormLookup(formRun);