Lookups on Dialog: SysTableLookup and registerOverrideMethod

SysTableLookup can be used in dialogs to create custom lookups.

control.registerOverrideMethod can be used to register the methods to override by an object

Here is the example which shows basic usage of both. We will create a dialog and get a lookup of account numbers on a control

protected Object dialog()

{

    FormStringControl control;

    ;

    dialog = super();

    dialogFeildAccountNum = dialog.addField(extendedTypeStr(AccountNum));

    control = dialogFeildAccountNum.control();

    control.registerOverrideMethod(methodStr(FormStringControl, lookup), methodStr(DialogLookup, accountNumLookup), this);

   

    return dialog;

}

Here is the method:

private void accountNumLookup(FormStringControl _control)

{

    SysTableLookup          sysTableLookup;

    QueryBuildDataSource    queryBuildDataSource;

    Query                   query = new Query();

    queryBuildDataSource = query.addDataSource(tablenum(CustTable));

    sysTableLookup = SysTableLookup::newParameters(tablenum(CustTable), _control);

    sysTableLookup.addLookupfield(fieldnum(CustTable, AccountNum),  true);

    sysTableLookup.parmQuery(query);

    sysTableLookup.performFormLookup();

}