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I have an old Excel 4 macro that I use to run monthly invoices. It is about 3000 lines and has many Excel 5 Dialog Box sheets (for dialog boxes). I would like to know what the easiest way would be to change it into VBA and if it is worth it. Also, if once I have converted it to VBA, how to create a standalone application out of it?

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I have attempted this before and in the end you do need to rewrite it as Biri has said.

I did quite a bit of this work when our company was upgrading from Windows NT to Windows XP. I often found that it is easier not to look at the old code at all and start again from scratch. You can spend so much time trying to work out what the Excel 4 did especially around the "strange" dialog box notation. In the end if you know what the inputs are and the outputs then it often more time effective and cleaner to rewrite.

Whether to use VBA or not is in some ways another question but VBA is rather powerful and extensible so although I would rather use other tools like .NET in many circumstances it works well and is easy to deploy.

In terms of is it worth it? If you could say that you were never ever going to need to change your Excel 4 macro again then maybe not. But in Business there is always something that changes eg tax rates, especially end of year things. Given how hard it is to find somone to support Excel 4 and even find documentation on it I would say it is risky not to move to VBA but that is something to balance up.

于 2008-09-18T08:52:52.500 回答
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（免责声明：我开发 Excel-DNA 库）

与其将宏移至使用不同于 Excel 宏语言的 COM 自动化对象模型的 VBA，不如将其移至使用Excel-DNA库运行的 VB.NET（或 C#）。

Excel-DNA 允许您使用与宏语言非常相似的 C API。对于每个宏命令，例如您的对话框，都有一个采用相同参数的 C API 函数。例如，DIALOG.BOX 的等价物是 xlfDialogBox - 此线程中有一些讨论和示例：http ://groups.google.com/group/exceldna/browse_thread/thread/53a8253269fdf0a5 。

这一举措的一大优势是您可以逐渐更改部分代码以使用 COM 自动化接口 - Excel-DNA 允许您混合和匹配 COM 接口和 C API。

于 2011-09-27T19:43:02.823 回答
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AFAIK there is no possibility to somehow convert it. You have to basically rewrite in in VBA.

If you have converted to VBA, you cannot run as a standalone application. As VBA states Visual Basic for Application, it is living inside an application (Word, Excel, Scala, whatever).

You have to learn a standard language (not a macro-language) to create standalone applications. But you have to learn much more than the language itself. You have to learn different techniques, for example database handling instead of Excel sheet handling, printing instead of Excel printing, and so on. So basically you will lose a lot of function which is evident if you use Excel.

于 2008-09-18T08:17:01.947 回答
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Here is a good artikel about this topic: http://msdn.microsoft.com/en-us/library/aa192490.aspx

You can download VB2008-Express for free at: http://www.microsoft.com/express/default.aspx

于 2008-09-18T08:15:01.920 回答