JSI Tip 8407. How does the EditFlags Value Name control a users ability to modify a files association?

In tip 6546 » How do I disable a users ability to use the Tools / Folder Options / File Types dialog to change file associations that you specify, we used the EditFlags Value Name to Exclude a file type from the Windows Explorer's Tools / Folder Options / File Types dialog box.

The EditFlags Value Name can be a REG_DWORD or REG_BINARY data type.

The following table defines EditFlags data values when using the REG_DWORD data type.

Value Name	Data Value	D e s c r i p t i o n
FTA_Exclude	0x00000001	Exclude the file class.
FTA_Show	0x00000002	Show file classes, such as folders, that aren't associated with a file name extension.
FTA_HasExtension	0x00000004	The file class has a file name extension.
FTA_NoEdit	0x00000008	The registry entries associated with this file class cannot be edited. New entries cannot be added and existing entries cannot be modified or deleted.
FTA_NoRemove	0x00000010	The registry entries associated with this file class cannot be deleted.
FTA_NoNewVerb	0x00000020	No new verbs can be added to the file class.
FTA_NoEditVerb	0x00000040	Canonical verbs such as open and print cannot be modified or deleted.
FTA_NoRemoveVerb	0x00000080	Canonical verbs such as open and print cannot be deleted.
FTA_NoEditDesc	0x00000100	The description of the file class cannot be modified or deleted.
FTA_NoEditIcon	0x00000200	The icon assigned to the file class cannot be modified or deleted.
FTA_NoEditDflt	0x00000400	The default verb cannot be modified.
FTA_NoEditVerbCmd	0x00000800	The commands associated with verbs cannot be modified.
FTA_NoEditVerbExe	0x00001000	Verbs cannot be modified or deleted.
FTA_NoDDE	0x00002000	The Dynamic Data Exchange (DDE)-related entries cannot be modified or deleted.
FTA_NoEditMIME	0x00008000	The content-type and default-extension entries cannot be modified or deleted.
FTA_OpenIsSafe	0x00010000	The file class's open verb can be safely invoked for downloaded files.
FTA_AlwaysUnsafe	0x00020000	Do not allow the Never ask me check box to be enabled. The user can override this attribute through the File Type dialog box.
FTA_AlwaysShowExt	0x00040000	Always show the file class's file name extension, even if the user has selected the Hide Extensions option.
FTA_NoRecentDocs	0x00100000	Don't add members of this file class to the Recent Documents folder.

To set the FTA_NoRemove and FTA_NoNewVerb bits, use 0x00000030.

To convert EditFlags from REG_BINARY to REG_DWORD:

REG_BINARY ab cd ef gh
REG_DWORD  gh ef cd ab