Subj : Mixing up parameters in setProperty callback
To   : netscape.public.mozilla.jseng
From : "Sterling Bates" <sblist*nospam*serv@bigbangco.com>
Date : Sat Dec 13 2003 03:12 am

For a certain class I have the following setProperty callback:

function IntfBridge_SetProperty(cx: PJSContext; obj: PJSObject; id: jsval;
vp: pjsval): JSBool; cdecl;

This works fine for the most part.  I convert id and vp into strings so I
can check the properties against a Delphi object:

    function GetParamName(cx: PJSContext; id: jsval): PChar;
    begin
      Result := PChar(JS_GetStringBytes(JS_ValueToString(cx, id)));
    end;

    procedure GetParamValue(cx: PJSContext; vp: pjsval; var pch: PChar);
    begin
      pch := PChar(JS_GetStringBytes(JS_ValueToString(cx, vp^)));
    end;

These just return const char * values to the IntfBridge_SetProperty routine.
Most of the time when running the following in javascript...

    bridge.Value = "lorem ipsum dolor sit amet";

....it'll properly send over "Value" and "lorem ipsum..." as id and vp^
respectively.  Sometimes, however, both id and vp^ will read as "lorem ipsum
dolor sit amet".  I'm not sure what would cause this to occur, nor where to
start examining my code.

Any help is appreciated,

Sterling

.