In general, when you have a pointer (*) to a variable, you'll want to pass that parameter ByRef, otherwise you should pass it ByVal -- the exceptions are Strings (which you should pretty much always pass ByVal) and user-defined data types (which you have to pass ByRef). If you want to pass a NULL value to an API function, declare the parameter as an Integer and pass a zero ByVal. As an example, th
{{#tags}}- {{label}}
{{/tags}}