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file extension to application mapping

file extension to application mapping

file extension to application mapping

Where can i get the mapping of the File Extension to its
default application from the registry

RE: file extension to application mapping

Example: ".txt" extension.

1. Open HKEY_CLASSES_ROOT\.txt   -->  This gives you the description, in the example it is "txtfile".
2. Open HKEY_CLASSES_ROOT\txtfile\shell\open\command  (txtfile is the return value of step 1.) This gives you the command the shell is using when opening a ".txt" file.
3. Strip off any quotes and %1-stuff. With the result call ExpandEnvironmentStrings. There it is.


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