Jump to content
Sign in to follow this  

Return Default Application Udf

Recommended Posts


Here is a really pretty simple UDF i wrote.

It returns the default aplication for a file extension.

The Return Value is the Full Path to the File.

Filename: 'extension.au3'

; Function Name:    _ReturnDefaultApp($extension)
; Description:    Returns the location to the default application that is used for the specified extension.
; Parameter(s):  $extension - Extension that you would like to use: Must contain the period. (e.g.:   '.txt').
; Requirement(s):   AutoIt3 Beta.
; Return Value(s):  On Success - Returns full location to the executable.
;                  On Failure - 0
; Author(s):        chris95219
Func _ReturnDefaultApp($extension)
    $RegLocation = RegRead("HKEY_CLASSES_ROOT\" & $extension, "")
    $RegLoc = RegRead("HKEY_CLASSES_ROOT\" & $RegLocation & "\Shell\Open\command", "")
    $LocationA = _RemoveFromString($RegLoc, "%")
    $LocationB = _RemoveFromString($LocationA, Chr(34))
    $LocationC = _RemoveFromString($LocationB, ",")
    $FullLocation = _Convert($LocationC)
    if $FullLocation = "" Then
        Return 0
    Return $FullLocation

Func _RemoveFromString($String, $Char)
    $Array = StringSplit($String, "")
    Local $ComString
    For $i = 1 to $Array[0]
        If $Array[$i] == $Char Then
            $Array[$i] = ""
        $ComString &= $Array[$i]
    Return $ComString

Func _Convert($string)
local $ComString
        $ComString = StringReplace($string, "SystemRoot", @WindowsDir, 1)
        $ComString = StringReplace($ComString, "rundll32.exe ", "")
        $ComString = StringReplace($ComString, "ImageView_FullScreen", "")
        $ComString = StringReplace($ComString, " 1", "")
        $ComString = StringReplace($ComString, " /prefetch:6 /Open L", "")
        $ComString = StringReplace($ComString, " -url", "")
        Return $ComString


#include "extension.au3"
$ext = InputBox("Extension", "What is the Extension?")
MsgBox(0, "Extension Information:", "The default application for that extension is: " & @CRLF & _ReturnDefaultApp($ext))

This can be used if your not sure what the default application for a file is and need to run a file.

here is another example:

#include "extension.au3"
Run(_ReturnDefaultApp(".html") & " http://www.google.com")

This should open www.google.com in your DEFAULT browser.

Edited by CHRIS95219

Share this post

Link to post
Share on other sites

the browser function looks good. Well done

My Programs:AInstall - Create a standalone installer for your programUnit Converter - Converts Length, Area, Volume, Weight, Temperature and Pressure to different unitsBinary Clock - Hours, minutes and seconds have 10 columns each to display timeAutoIt Editor - Code Editor with Syntax Highlighting.Laserix Editor & Player - Create, Edit and Play Laserix LevelsLyric Syncer - Create and use Synchronised Lyrics.Connect 4 - 2 Player Connect 4 Game (Local or Online!, Formatted Chat!!)MD5, SHA-1, SHA-256, Tiger and Whirlpool Hash Finder - Dictionary and Brute Force FindCool Text Client - Create Rendered ImageMy UDF's:GUI Enhance - Enhance your GUIs visually.IDEA File Encryption - Encrypt and decrypt files easily! File Rename - Rename files easilyRC4 Text Encryption - Encrypt text using the RC4 AlgorithmPrime Number - Check if a number is primeString Remove - remove lots of strings at onceProgress Bar - made easySound UDF - Play, Pause, Resume, Seek and Stop.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  


Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.