壳牌功能 [英] Shell Function

问题描述

我在Visual Basic项目中使用SHELL函数来启动程序文件，如Word，Excel等。我使用以下方式的函数：


Shell C：\Program Files \ Microsoft Office \ Office \ FRONTP.EXE，vbMaximizedFocus


如果指定的文件不存在，则没有任何迹象。是否有一些错误处理方法可用于通过msgbox或文件不存在的方式提醒用户？

解决方案

我在Visual Basic项目中使用SHELL函数来启动程序文件，例如Word，Excel等。我正在以下列方式使用该函数：


Shell" C：\Program Files \ Microsoft Office \ Office \\ [FRONTP.EXE"，vbMaximizedFocus


如果指定的文件不存在，则没有任何指示这样。是否有一些错误处理方法，我可以用来通过msgbox或文件不存在的东西提醒用户？

hi


如果不是DIR（C：\Program Files \ Microsoft Office \ Office \ FRONTP.EXE"，0）= vbNullString然后

''文件存在，你可以继续

如果不是DIR（C：\Program Files \ Microsoft Office \ Office \ FRONTP.EXE，0）= vbNullString然后

''文件存在，你可以继续

只是一个注意事项 - 如果您使用VB6，那么我相信Shell功能或多或少已过时。我不记得它到底应该如何工作，但是给我几个小时（刚刚开始工作），我会在午休期间跟踪它。

< blockquote>如果SHELL不成功，则返回零

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I am using the SHELL function in a Visual Basic Project to launch program files, such as Word, Excel, etc. I am using the function in the following way:

Shell "C:\Program Files\Microsoft Office\Office\FRONTP.EXE", vbMaximizedFocus

If the specified file does not exist there is no indication of such. Is there some method of error handling that I can use to alert the user via a msgbox or something that the file does not exist?

解决方案

I am using the SHELL function in a Visual Basic Project to launch program files, such as Word, Excel, etc. I am using the function in the following way:

Shell "C:\Program Files\Microsoft Office\Office\FRONTP.EXE", vbMaximizedFocus

If the specified file does not exist there is no indication of such. Is there some method of error handling that I can use to alert the user via a msgbox or something that the file does not exist?

hi

If Not DIR("C:\Program Files\Microsoft Office\Office\FRONTP.EXE",0)=vbNullString then
'' file exist, you may proceed

If Not DIR("C:\Program Files\Microsoft Office\Office\FRONTP.EXE",0)=vbNullString then
'' file exist, you may proceed

Just a note - if you''re using VB6 then I believe the Shell function is more or less obsolete. I don''t recall exactly how it''s supposed to work now, but give me a few hours (just started work) and I''ll track it down during my lunch break.

If SHELL is unsuccessful it returns a zero

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