jscript, Passing JScript variables by reference to an ActiveX component

Passing JScript variables by reference to an ActiveX component

Author	Message
kml.. #1 / 4	Passing JScript variables by reference to an ActiveX component I have recently done a lot of research into ActiveX components. After figuring out how to achieve call-by-reference semantics for arguments passed to an ActiveX component method from VBScript, I discovered that an almost identical invocation of this method in JScript does not modify the passed argument(s). I did read in the JScript documentation that only objects, strings, and arrays are passed by reference but even when the argument is of string type prior to the method call, it does not contain the appropriate value after the call returns. Interresting too is that the return value does work in both VBScript and JScript. So if anyone could shed some light on this problem it would be much appreciated. Sent via Deja.com http://www.--*.com/ Share what you know. Learn what you don't.
Sun, 10 Feb 2002 03:00:00 GMT

T-ma #2 / 4	Passing JScript variables by reference to an ActiveX component howdy-- I think that if you read the docs again you'll find that ONLY objects are passed by reference in JScript. T Quote: > I have recently done a lot of research into > ActiveX components. After figuring out how to > achieve call-by-reference semantics for arguments > passed to an ActiveX component method from > VBScript, I discovered that an almost identical > invocation of this method in JScript does not > modify the passed argument(s). I did read in the > JScript documentation that only objects, strings, > and arrays are passed by reference but even when > the argument is of string type prior to the > method call, it does not contain the appropriate > value after the call returns. Interresting too > is that the return value does work in both > VBScript and JScript. So if anyone could shed > some light on this problem it would be much > appreciated. > Sent via Deja.com http://www.deja.com/ > Share what you know. Learn what you don't.
Mon, 11 Feb 2002 03:00:00 GMT

T-ma #3 / 4	Passing JScript variables by reference to an ActiveX component howdy-- never mind, ignore my last post. I don't know what's wrong. Shouldn't have said anything. T
Tue, 12 Feb 2002 03:00:00 GMT

Andrew Nosenk #4 / 4	Passing JScript variables by reference to an ActiveX component It's known VBScript allows only [in,out] VARIANT* by-ref arguments, while JScript doesn't support by-refs at all. I proposed a semi-solution to this: http://discuss.microsoft.com/SCRIPTS/WA-MSD.EXE?A2=ind9905d&L=atl&F=&... Another solution can be used without mods to ActiveX code: http://www.meadroid.com/scriptx/docs.htm#InvokeByRef Regards, Andrew Nosenko, Senior Software Engineer Mead & Company Custom look & feel for browser windows: http://www.meadroid.com/wpm/ MeadCo HTML printing article and samples on the MSDN: http://msdn.microsoft.com/workshop/author/script/dhtmlprint.asp Advanced HTML printing: http://www.meadroid.com/scriptx/ I have recently done a lot of research into ActiveX components. After figuring out how to achieve call-by-reference semantics for arguments passed to an ActiveX component method from VBScript, I discovered that an almost identical invocation of this method in JScript does not modify the passed argument(s). I did read in the JScript documentation that only objects, strings, and arrays are passed by reference but even when the argument is of string type prior to the method call, it does not contain the appropriate value after the call returns. Interresting too is that the return value does work in both VBScript and JScript. So if anyone could shed some light on this problem it would be much appreciated. Sent via Deja.com http://www.deja.com/ Share what you know. Learn what you don't.
Wed, 13 Feb 2002 03:00:00 GMT

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