ICopyHook::CopyCallbackICopyHook::CopyCallback*
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ICopyHook::CopyCallback


UINT CopyCallback(
    HWND hwnd,
    UINT wFunc,
    UINT wFlags,
    LPCSTR pszSrcFile,
    DWORD dwSrcAttribs,
    LPCSTR pszDestFile,
    DWORD dwDestAttribs
   );

Determines whether the shell will be allowed to move, copy, delete, or rename a folder or printer object. The shell calls each copy hook handler registered (see comments below) for a folder or printer object until all the handlers have been called or until one of them returns IDNO or IDCANCEL.

hwnd
Handle to the window that the copy hook handler should use as the parent for any user interface elements the handler may need to display. If FOF_SILENT is specified, the method should ignore this parameter.
wFunc
Operation to perform. This parameter can be one of the values listed under the wFunc member of the SHFILEOPSTRUCT structure.
wFlags
Flags that control the operation. This parameter can be one or more of the values listed under the fFlags member of the SHFILEOPSTRUCT structure.
pszSrcFile
Address of a string that contains the name of the source file.
dwSrcAttribs
Attributes of the source file. This parameter can be a combination of any of the file attribute flags (FILE_ATTRIBUTE_*) defined in the Windows header files.
pszDestFile
Address of a string that contains the name of the destination file.
dwDestAttribs
Attributes of the destination file. This parameter can be a combination of any of the file attribute flags (FILE_ATTRIBUTE_*) defined in the Windows header files.

You need to register your copy hook handler. For example, directory copy hook handlers are registered under HKEY_CLASSES_ROOT\directory\shellex\CopyHookHandlers\your_copyhook\{copyhook CLSID value}. Other registry keys associated with shell extensions are: *, Folder, Drives, Printers, Unknown, and AudioCD.

When this method is called, the shell initializes the ICopyHook interface directly without using an IShellExtInit interface first.

See also SHFileOperation

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