Ask how to build a function in the class library Function returns WIDESTRING

nature365

Such as FUNCTION GETTBLNAME (CONST TBLNAME: WIDESTRING): WIDESTRING; SAFECALL;
And the function I created looks like this
 function gettblname (const tblname: WideString): HResult; safecall;

dior556

This is how COM is defined... Can be used as an out parameter to return WideString

nature365

May I ask if I choose HRESULT or BSTR

abomination

No problem, did you use the function created by the wizard to see if the return value was not selected?

function Get_Caption: WideString; safecall;


function TAAA.Get_Caption: WideString;
begin
  Result := WideString(Caption);
end;

abomination

Of course I chose BSTR

nature365

Beginner class library, is it a method to use the parameter in the number type return return type to choose BSTR?

nature365

A method is created in the class library with a wizard and registered successfully. This method cannot be called in the network.
Call the component like this <object classid="clsid:ED9D82E2-900D-4C69-8583-443199355C96" id="ACX_Report1"
width="162" height="253">
<script language="javascript"> var OutCome1;
alert(document.all.ACX_Report1.Method1);

besuchen

The parameter is out, and the pointer of WideString is passed. The return type of COM is all HRESULT and cannot be changed.