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c++windowswinapiregistry

How to use RegCopyTree

I've been playing around with the C++ registry functions, and I'm trying to get RegCopyTree working, but every time I try, I get an error like

ERROR_FILE_NOT_FOUND

or

ERROR_ACCESS_DENIED.

I am running the program as administrator, and all other registry functions work fine.

Here is the code I'm using:

HKEY destinationKey;
RegCreateKeyEx(getRootKeyFromCode(rootKeyCode),
        destinationKeyPathNative, 0, NULL, 0, 0, NULL,
        &destinationKey, NULL);
RegCopyTree(INSERT_ROOT_KEY_HERE,
        INSERT_ORIGINAL_KEY_PATH_HERE, destinationKey);
RegCloseKey(destinationKey);

I've removed the error handling and some other irrelevant parts.

Solution

  • Destination key handle should have write access, to be able to copy to it. Calling RegCreateKeyEx() without specifying access mode either fails or doesn't grant write access. Try with KEY_WRITE or KEY_CREATE_SUB_KEY as sixth argument.