Setting a Registry Key

Posted on 2000-05-16
Medium Priority
Last Modified: 2013-11-20
   My App uses some API's that require a certain registry key to be set.
So as part of the initilisation of my app, I need to check if such a key exists and if not to create it.

So how do I go abt doing that?

Reading the key and then possible setting the appropriate key

Is there any MFC, Win32 command to do so ?

Thanks and Regards


Question by:manx
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Expert Comment

ID: 2813894
If it is a part of API, not of your program, it is better to use Win 32 functions, e.g. RegQueryValueEx. There are some wrappers for this functions on www.codeguru.com 

Expert Comment

ID: 2814151
Duplicated question
LVL 10

Expert Comment

ID: 2815355
Or you can use the CRegKey ATL classes which already provide wrappers.
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Expert Comment

ID: 2817926
Heres a list of registry apis you can use:-

RegCreateKeyEx Creates the specified registry key.
RegDeleteKey Deletes a subkey.
RegDeleteValue Removes a named value from the specified registry key.
RegEnumKeyEx Enumerates subkeys of the specified open registry key.
RegEnumValue Enumerates the values for the specified open registry key.
RegLoadKey Creates a subkey under HKEY_USERS or HKEY_LOCAL_MACHINE and stores registration information from a specified file into that subkey.
RegOpenCurrentUser Retrieves a handle to the HKEY_CURRENT_USER key for the user the current thread is impersonating.
RegOpenKeyEx Opens the specified registry key.
RegOpenUserClassesRoot Retrieves a handle to the HKEY_CLASSES_ROOT key for the specified user.
RegQueryInfoKey Retrieves information about the specified registry key.
RegQueryMultipleValues Retrieves the type and data for a list of value names associated with an open registry key.
RegQueryValueEx Retrieves the type and data for a specified value name associated with an open registry key.
RegReplaceKey Replaces the file backing a registry key and all its subkeys with another file.
RegSetValueEx Sets the data and type of a specified value under a registry key.
RegUnLoadKey Unloads the specified registry key and its subkeys from the registry.

Expert Comment

ID: 2818363
iDeb changed the proposed answer to a comment
LVL 10

Accepted Solution

RONSLOW earned 150 total points
ID: 2819414
Here is my answer (as requested in the duplicate question).

Author Comment

ID: 2821597

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