Solved

Accepting command arguments

Posted on 2000-02-14
4
157 Views
Last Modified: 2010-05-02
I've recently created an application and then decided I wanted to use shell extentions to enhance it.  I know about creating the shell extentions.  My question is this.  How can I have my app accept command arguments when it is called to load.  Example:  I want to right-click on an executable and choose a menu item that launches my application.  When my application loads, I want it to know the size of the file that I right-clicked on.
0
Comment
Question by:fibdev
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 70

Expert Comment

by:Éric Moreau
ID: 2518803
Use the Command function.

This is the example taken from the help file:

This example uses the Command function to get the command line arguments in a function that returns them in a Variant containing an array.

Function GetCommandLine(Optional MaxArgs)
   'Declare variables.
   Dim C, CmdLine, CmdLnLen, InArg, I, NumArgs
   'See if MaxArgs was provided.
   If IsMissing(MaxArgs) Then MaxArgs = 10
   'Make array of the correct size.
   ReDim ArgArray(MaxArgs)
   NumArgs = 0: InArg = False
   'Get command line arguments.
   CmdLine = Command()
   CmdLnLen = Len(CmdLine)
   'Go thru command line one character
   'at a time.
   For I = 1 To CmdLnLen
      C = Mid(CmdLine, I, 1)
      'Test for space or tab.
      If (C <> " " And C <> vbTab) Then
         'Neither space nor tab.
         'Test if already in argument.
         If Not InArg Then
         'New argument begins.
         'Test for too many arguments.
            If NumArgs = MaxArgs Then Exit For
            NumArgs = NumArgs + 1
            InArg = True
         End If
         'Concatenate character to current argument.
         ArgArray(NumArgs) = ArgArray(NumArgs) & C
      Else
         'Found a space or tab.
         'Set InArg flag to False.
         InArg = False
      End If
   Next I
   'Resize array just enough to hold arguments.
   ReDim Preserve ArgArray(NumArgs)
   'Return Array in Function name.
   GetCommandLine = ArgArray()
End Function

0
 
LVL 2

Expert Comment

by:telebasics
ID: 2518876
Yes, in the Command function are all param's given to your prog. When you right click a file and select you prog menu item, make sure you open it with %1 param then the selected filename is passed, open it and with LOF(fn) you get the size (easy example)
0
 
LVL 3

Author Comment

by:fibdev
ID: 2519109
telebasics,

could you please elaborate on how to do this?  LOF(fn)?

Thanks
0
 
LVL 2

Accepted Solution

by:
telebasics earned 200 total points
ID: 2519197
something like this:
Dim Filename as string
Dim Size as long

FileName = Command
Open Filename for random as #1
Size = LOF(1)
Close (1)
msgbox cstr(Size)
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction While answering a recent question about filtering a custom class collection, I realized that this could be accomplished with very little code by using the ScriptControl (SC) library.  This article will introduce you to the SC library a…
You can of course define an array to hold data that is of a particular type like an array of Strings to hold customer names or an array of Doubles to hold customer sales, but what do you do if you want to coordinate that data? This article describes…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question