The Microsoft provides a 32-bit msscript.ocx which allows you to easily do some scripting inside your application, however, they do not have an official 64-bit version of ScriptControl and they are not planning to make one.

64-bit computing and applications are gradually accepted and in an increasing demand recent years. I found tablacus/TablacusScriptControl is a very good alternative that provides the 64-bit Scripting Control and I use it quite a lot in my applications.

As one can imagine, nowadays, usually the same source code can be compiled to both 32-bit and 64-bit, therefore, we have to make sure the behavior has to stay consistent in either mode. The behavior is somewhat different between the 64-bit ScriptControl and the Microsoft's 32-bit msscript.ocx.

How to reproduce?

create two vbs files, with the 32-bit version:

Dim SC
Set SC = CreateObject("MSScriptControl.ScriptControl")

SC.Reset 
WScript.Echo SC.Language

and 64-bit version:

Dim SC
Set SC = CreateObject("ScriptControl")

SC.Reset 
WScript.Echo SC.Language

If you run both, you will see the 32-bit version throws:

ScriptControl (4, 1) : The operation could not be completed because the script engine has not been initialized to a valid language.

but the 64-bit ScriptControl silently swallows the error.

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Posted on Utopian.io - Rewarding Open Source Contributors

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