Shell Registry Handling Functions

This section describes the Windows Shell registry handling functions. The programming elements explained in this documentation are exported by Shlwapi.dll and defined in Shlwapi.h and Shlwapi.lib.

In this section

TopicDescription

AssocCreate

Returns a pointer to an IQueryAssociations object.

AssocGetPerceivedType

Retrieves a file's perceived type based on its extension.

AssocIsDangerous

Determines whether a file type is considered a potential security risk.

AssocQueryKey

Searches for and retrieves a key related to a file or protocol association from the registry.

AssocQueryString

Searches for and retrieves a file or protocol association-related string from the registry.

AssocQueryStringByKey

Searches for and retrieves a file association-related string from the registry starting from a specified key.

SHCopyKey

Recursively copies the subkeys and values of the source subkey to the destination key. SHCopyKey does not copy the security attributes of the keys.

SHDeleteEmptyKey

Deletes an empty key.

SHDeleteKey

Deletes a subkey and all its descendants. This function removes the key and all the key's values from the registry.

SHDeleteValue

Deletes a named value from the specified registry key.

SHEnumKeyEx

Enumerates the subkeys of the specified open registry key.

SHEnumValue

Enumerates the values of the specified open registry key.

SHGetAssocKeys

Retrieves an array of class subkeys associated with an IQueryAssociations object.

SHGetValue

Retrieves a registry value.

SHOpenRegStream2

Opens a registry value and supplies a stream that can be used to read from or write to the value. This function supersedes SHOpenRegStream.

SHQueryInfoKey

Retrieves information about a specified registry key.

SHQueryValueEx

Opens a registry key and queries it for a specific value.

SHRegCloseUSKey

Closes a handle to a user-specific registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegCreateUSKey

Creates or opens a registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegDeleteEmptyUSKey

Deletes an empty registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegDeleteUSValue

Deletes a registry subkey value in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegDuplicateHKey

Duplicates a registry key's HKEY handle.

SHRegEnumUSKey

Enumerates the subkeys of a registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegEnumUSValue

Enumerates the values of the specified registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegGetBoolUSValue

Retrieves a Boolean value from a registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegGetIntW

Reads a numeric string value from the registry and converts it to an integer.

SHRegGetPath

Retrieves a file path from the registry, expanding environment variables as needed.

SHRegGetUSValue

Retrieves a value from a registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegOpenUSKey

Opens a registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegQueryInfoUSKey

Retrieves information about a specified registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegQueryUSValue

Retrieves the type and data for a specified name associated with an open registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegSetPath

Takes a file path, replaces folder names with environment strings, and places the resulting string in the registry.

SHRegSetUSValue

Sets a registry subkey value in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHRegSetValue

Sets a registry value.

Use RegSetValue in its place.

SHRegWriteUSValue

Writes a value to a registry subkey in a user-specific subtree (HKEY_CURRENT_USER or HKEY_LOCAL_MACHINE).

SHSetValue

Sets the value of a registry key.

 

 

 

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