Member name	Value	Description
FOF_MULTIDESTFILES	1	The target specifies multiple destination files (one for each source file in pFrom) rather than one directory where all source files are to be deposited.
FOF_CONFIRMMOUSE	2	Not used.
FOF_SILENT	4	Do not display a progress dialog box.
FOF_RENAMEONCOLLISION	8	Give the file being operated on a new name in a move, copy, or rename operation if a file with the target name already exists at the destination.
FOF_NOCONFIRMATION	16	Respond with Yes to All for any dialog box that is displayed.
FOF_WANTMAPPINGHANDLE	32	If FOF_RENAMEONCOLLISION is specified and any files were renamed, assign a name mapping object that contains their old and new names to the hNameMappings member. This object must be freed using SHFreeNameMappings when it is no longer needed.
FOF_ALLOWUNDO	64	Preserve undo information, if possible. Prior to Windows Vista, operations could be undone only from the same process that performed the original operation. In Windows Vista and later systems, the scope of the undo is a user session. Any process running in the user session can undo another operation. The undo state is held in the Explorer.exe process, and as long as that process is running, it can coordinate the undo functions.If the source file parameter does not contain fully qualified path and file names, this flag is ignored.
FOF_FILESONLY	128	Perform the operation only on files (not on folders) if a wildcard file name (.) is specified.
FOF_SIMPLEPROGRESS	256	Display a progress dialog box but do not show individual file names as they are operated on.
FOF_NOCONFIRMMKDIR	512	Do not ask the user to confirm the creation of a new directory if the operation requires one to be created.
FOF_NOERRORUI	1024	Do not display a dialog to the user if an error occurs.
FOF_NOCOPYSECURITYATTRIBS	2048	Do not copy the security attributes of the file. The destination file receives the security attributes of its new folder.
FOF_NORECURSION	4096	Only perform the operation in the local directory. Do not operate recursively into subdirectories, which is the default behavior.
FOF_NO_CONNECTED_ELEMENTS	8192	Do not move connected files as a group. Only move the specified files.
FOF_WANTNUKEWARNING	16384	Send a warning if a file is being permanently destroyed during a delete operation rather than recycled. This flag partially overrides FOF_NOCONFIRMATION.
FOF_NORECURSEREPARSE	32768	Not used.
FOF_NO_UI	1556	Windows Vista. Perform the operation silently, presenting no UI to the user. This is equivalent to FOF_SILENT \| FOF_NOCONFIRMATION \| FOF_NOERRORUI \| FOF_NOCONFIRMMKDIR.
FOFX_NOSKIPJUNCTIONS	65536	Walk into Shell namespace junctions. By default, junctions are not entered.
FOFX_PREFERHARDLINK	131072	If possible, create a hard link rather than a new instance of the file in the destination.
FOFX_SHOWELEVATIONPROMPT	262144	If an operation requires elevated rights and the FOF_NOERRORUI flag is set to disable error UI, display a UAC UI prompt nonetheless.
FOFX_RECYCLEONDELETE	524288	Introduced in Windows 8. When a file is deleted, send it to the Recycle Bin rather than permanently deleting it.
FOFX_EARLYFAILURE	1048576	If FOFX_EARLYFAILURE is set together with FOF_NOERRORUI, the entire set of operations is stopped upon encountering any error in any operation. This flag is valid only when FOF_NOERRORUI is set.
FOFX_PRESERVEFILEEXTENSIONS	2097152	Rename collisions in such a way as to preserve file name extensions. This flag is valid only when FOF_RENAMEONCOLLISION is also set.
FOFX_KEEPNEWERFILE	4194304	Keep the newer file or folder, based on the Date Modified property, if a collision occurs. This is done automatically with no prompt UI presented to the user.
FOFX_NOCOPYHOOKS	8388608	Do not use copy hooks.
FOFX_NOMINIMIZEBOX	16777216	Do not allow the progress dialog to be minimized.
FOFX_MOVEACLSACROSSVOLUMES	33554432	Copy the security attributes of the source item to the destination item when performing a cross-volume move operation. Without this flag, the destination item receives the security attributes of its new folder.
FOFX_DONTDISPLAYSOURCEPATH	67108864	Do not display the path of the source item in the progress dialog.
FOFX_DONTDISPLAYDESTPATH	134217728	Do not display the path of the destination item in the progress dialog.
FOFX_REQUIREELEVATION	268435456	Introduced in Windows Vista SP1. The user expects a requirement for rights elevation, so do not display a dialog box asking for a confirmation of the elevation.
FOFX_ADDUNDORECORD	536870912	Introduced in Windows 8. The file operation was user-invoked and should be placed on the undo stack. This flag is preferred to FOF_ALLOWUNDO.
FOFX_COPYASDOWNLOAD	1073741824	Introduced in Windows 7. Display a Downloading instead of Copying message in the progress dialog.
FOFX_DONTDISPLAYLOCATIONS	-2147483648	Introduced in Windows 7. Do not display the location line in the progress dialog.

Reference

ShellBoost.Core.WindowsShell Namespace