Converts a string into a moniker that identifies the object named by the
string. This is the inverse of the IMoniker::GetDisplayName
operation, which retrieves the display name associated with a moniker.
| LPBC pbc,
||//Bind context to be used
| LPCOLESTR szUserName,
| ULONG FAR *pchEaten,
||//Receives number of characters consumed
| LPMONIKER FAR *ppmk
||//Receives moniker built from display name
Points to the binding context to be used in this binding operation.
Points to a zero-terminated string containing the display name to be parsed.
For Win32 applications, the LPOLESTR
type indicates a wide character string (two bytes per character); otherwise,
the string has one byte per character.
Receives the number of characters of szUserName
that were consumed. If the function is successful, *pchEaten
is the length of szUserName
; otherwise, it is the number of characters successfully parsed.
Receives a pointer to the moniker that was built from szUserName
. The returned pointer is NULL if an error occurs; if non-NULL, the function
has called IUnknown::AddRef
on the parameter and the caller is responsible for calling IUnknown::Release
Indicates the parse operation was successful and the moniker was created.
Indicates an error in the syntax of a filename or an error in the syntax of
the resulting composite moniker.
Indicates insufficient memory.
In addition, the return value can be any of the error return values from IMoniker::BindToObject
, or IParseDisplayName::ParseDisplayName
function parses a human-readable name into a moniker that can be used to
identify a link source. The resulting moniker can be a simple moniker (such as a
file moniker), or it can be a generic composite made up of the component moniker
pieces. For example, the following display name:
could be parsed into the following generic composite moniker:
(FileMoniker based on "c:\mydir\somefile") (
) (ItemMoniker based on "item 1")
The most common situation in which you need to call MkParseDisplayName
is in the implementation of the standard Links dialog, which allows an
end-user to specify the source of a linked object by typing in a string. You may also
need to call MkParseDisplayName
if your application supports a macro language that permits remote references
(reference to elements outside of the document).
Note that parsing a display name often requires activating the same objects
that would be activated during a binding operation. Therefore, parsing a display
name can be as expensive as binding to the object that it refers. Objects that
are bound during the parsing operation are cached in the passed-in bind
context. If you plan to bind the moniker returned by MkParseDisplayName
, the best time to do so is immediately after the function returns, using the
same bind context; this removes the need to activate objects a second time.
function parses as much of the display name as it understands into a moniker.
The function then calls IMoniker::ParseDisplayName
on the newly created moniker, passing the remainder of the display name. The
moniker returned by IMoniker::ParseDisplayName
is composed onto the end of the existing moniker and, if any of the display
name remains unparsed, IMoniker::ParseDisplayName
is called on the result of the composition. This process is repeated until
the entire display name has been parsed.
function attempts the following strategies to parse the beginning of the
display name, using the first one that succeeds:
- The function looks in the Running Object Table for file monikers corresponding
to all prefixes of szDisplayName that consist solely of valid filename characters. This strategy can identify
documents that are as yet unsaved.
- The function checks the maximal prefix of szDisplayName, which consists solely of valid filename characters, to see if an OLE 1
document is registered by that name (this may require some DDE broadcasts). In this
case, the returned moniker is an internal moniker provided by the OLE 1
compatibility layer of OLE 2.
- The function consults the file system to check whether a prefix of szDisplayName matches an existing file. The filename can be drive absolute, drive relative,
working-directory relative, or begin with an explicit network share name. This
is the common case.
- If the initial character of szDisplayName is an '@', the function finds the longest string immediately following it
that conforms to the legal ProgID syntax. The function converts this string to a
CLSID using the CLSIDFromProgID function. If the CLSID represents an OLE 2 class, the function loads the
corresponding class object and asks for an IParseDisplayName interface pointer. The resulting IParseDisplayName interface is then given the whole string to parse, starting with the '@'. If
the CLSID represents an OLE 1 class, then the function treats the string
following the ProgID as an OLE1/DDE link designator having <filename>!<item> syntax.
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