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I have authored a batch script that assumes %1 is a path to a file. At times I would like to use this batch script via drag-drop in Windows Explorer (dragging my target file onto my batch script file), and at other times I would like to run this batch script from an existing command prompt window and provide my %1 path explicitly (usually just a relative path).

I don't want my script to disappear immediately when "drag dropping", thus I need to pause. However, I don't want to have to press any key to continue every time when using an existing command prompt window, thus I don't want pause.

Is there a way to have the best of both worlds? Can I somehow detect/infer the scenario I'm in, and decide to pause or not pause thereafter? What's the best approach here?

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2 Answers 2

up vote 4 down vote accepted

Try using this in your batch file:

set arg0=%0
if [%arg0:~2,1%]==[:] pause

This checks whether the 3rd character of the 0th argument (basically, the batch file name itself) is a colon or not.

Normally, when you drag-and-drop something on a batch file, it's called as: "Drive:\path\to\Batch File.bat" Arg1 Arg2 ... However, when we execute a batch file from the Command Prompt we generally do not tend to call it like that, with a quoted absolute path. Thus we can exploit this difference and execute a pause only when the colon exists as the 3rd character, implying that the batch file was executed via drag-and-drop. Of course, if you do use a quoted absolute path to execute the batch file from the command prompt, it will naturally pause as well.

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Exactly what I need. –  DuckMaestro Jan 4 '13 at 4:27

Throw a cmd /k at the end of your script. In an existing window it will just return to the command prompt, and in a new window it will do the same, keeping the window open.

@echo off
echo "some text"
cmd /k

Note the /k is to stop it printing the:

Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved.

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+1. This is helpful, though this has the side effect of now leaving open a command prompt, when really I'd like to keep the behavior of pause in that I can simply hit spacebar (or any key) to close the new window. –  DuckMaestro Jan 4 '13 at 2:17
    
How about Alt+F4? :P I don't think there's really any way to differentiate between the two situations unfortunately. Happy for someone to prove me wrong though, would be useful. –  Taz Jan 4 '13 at 2:19
    
Haha, I actually just tried to close a command prompt with Alt+F4 to discover it doesn't work. -.- –  Taz Jan 4 '13 at 2:21

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