CryptCATCDFEnumMembersByCDFTagEx function
[The CryptCATCDFEnumMembersByCDFTagEx function is available for use in the operating systems specified in the Requirements section. It may be altered or unavailable in subsequent versions.]
The CryptCATCDFEnumMembersByCDFTagEx function enumerates the individual file members in the CatalogFiles section of a catalog definition file (CDF). CryptCATCDFEnumMembersByCDFTagEx is called by MakeCat.
Note
This function has no associated header file or import library. To call this function, you must create a user-defined header file and use the LoadLibrary and GetProcAddress functions to dynamically link to Mssign32.dll.
Syntax
LPWSTR WINAPI CryptCATCDFEnumMembersByCDFTagEx(
_In_ CRYPTCATCDF *pCDF,
_Inout_ LPWSTR pwszPrevCDFTag,
_In_ PFN_CDF_PARSE_ERROR_CALLBACK pfnParseError,
_In_ CRYPTCATMEMBER **ppMember,
_In_ BOOL fContinueOnError,
_In_ LPVOID pvReserved
);
Parameters
-
pCDF [in]
-
A pointer to a CRYPTCATCDF structure.
-
pwszPrevCDFTag [in, out]
-
A pointer to a null-terminated string that identifies the catalog file member.
-
pfnParseError [in]
-
A pointer to a user-defined function to handle file parse errors.
-
ppMember [in]
-
A pointer to a CRYPTCATMEMBER structure that contains the file member information.
-
fContinueOnError [in]
-
A value that specifies whether to keep in memory a reference to the last enumerated member.
-
pvReserved [in]
-
This parameter is reserved; do not use it.
Return value
Upon success, this function returns a pointer to a null-terminated string that identifies a file member in the CatalogFiles section of a CDF. The CryptCATCDFEnumMembersByCDFTagEx function returns a NULL pointer if it fails.
Remarks
You typically call this function in a loop to enumerate all of the catalog file members in a CDF. Before entering the loop, set pwszPrevCDFTag to NULL. The function returns a pointer to the first member. Set pwszPrevCDFTag to the return value of the function for subsequent iterations of the loop.
Examples
The following example shows the correct sequence of assignments for the pwszPrevCDFTag parameter (pwszMemberTag).
CRYPTCATMEMBER *pMember;
LPWSTR pwszMemberTag;
CRYPTCATCDF *pCDF;
pCDF = CryptCATCDFOpen(L'myCDF', NULL);
pMember = NULL;
pwszMemberTag = NULL;
while (pwszMemberTag = CryptCATCDFEnumMembersByCDFTagEx(pCDF,
pwszMemberTag,
NULL,
&pMember,
FALSE,
NULL))
{
//do something with pwszMemberTag and pMember
}
CryptCATCDFClose(pCDF);
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows XP [desktop apps only] |
| Minimum supported server |
Windows Server 2003 [desktop apps only] |
| DLL |
|
See also