Dialog dlg;
DialogGroup dGrp;
DialogField dfName;

dlg = new Dialog("Trivial Dialog");
dGrp = dlg.addGroup("A Group");
dfName = dlg.addField(extendedTypeStr(Name));

if (dlg.run())
{
    info(dfName.value());
}

Extended data types have to be wrapped in a call to extendedTypeStr().

Dialog dlg;
DialogGroup dGrp;
DialogField dfCustomer;

dlg = new Dialog("Simple Dialog");
dGrp = dlg.addGroup("A Group");
dfCustomer = dlg.addField(extendedTypeStr(CustAccount));

if (dlg.run())
{
    info(dfCustomer.value());
}

Because CustAccount is linked to the AccountNum field in the table CustTable dynamics will convert the field to a dropdown and populate it with all the records of that table.

Dialog dlg;
DialogGroup dGrp;
DialogField dfGender;

dlg = new Dialog("Enum Dialog");
dGrp = dlg.addGroup("A Group");
dfGender = dlg.addField(enumStr(Gender), "Your Gender");

if (dlg.run())
{
    info(dfGender.value());
}

Enums have to be wrapped inside a call to enumStr() since they are not extended data types. Also the second parameter overrides the default label for the dialog field.

Dialog dlg;
DialogGroup dGrp;
DialogField dialogField;

dlg = new Dialog("Evil Dialog");
dGrp = dlg.addGroup("A Group");
dialogField = dlg.addFieldValue(extendedTypeStr(NoYesId), NoYes::Yes, "I hereby sell my soul");

if (dlg.run())
{
    info(dialogField.value());
}

Since we want their souls we use addFieldValue and pre-check the box for them.