MyFSD_FindNextFileW

This function continues a file search from a previous call to the MyFSD_FindFirstFileW function. The application does not call this function directly. Instead, use the corresponding standard Win32 function FindNextFile. The file system driver (FSD) Manager determines the file system type and calls the MyFSD_FindNextFileW implementation of the function.

At a Glance

Header file:	Fsdmgr.h
Windows CE versions:	2.10 and later

Syntax

BOOL MyFSD_FindNextFileW( PSEARCH pSearch, PWIN32_FIND_DATAW pfd );

Parameter

pSearch

[in] Pointer to the value that the FSD passes to the FSDMGR_CreateSearchHandle function creating the search handle.

pfd

[out] Pointer to the WIN32_FIND_DATA structure that receives information about the found file or subdirectory. The structure can be used in subsequent calls to MyFSD_FindNextFileW to refer to the found file or directory.

Return Values

Nonzero indicates success. Zero indicates failure. To get extended error information, call GetLastError. If no matching files can be found, the GetLastError function returns ERROR_NO_MORE_FILES.

Remarks

The MyFSD_FindNextFileW function searches for files by name only; it cannot be used for attribute-based searches.

An FSD exports this function if it wants to support the FindNextFile function. All FSD functions can be called reentryly, therefore, FSD developers must take this into account when developing an FSD.

The Fsdmgr component is a dynamic-link library (DLL) that manages all operating system interaction with installable files systems. Each installable file system requires an FSD, which is a DLL that exports an API needed to support an installable file system. The name of the DLL for the FSD and the names of the functions it exports start with the name of the associated installable file system. For example, if the name of file system is MyFSD, then its DLL is MyFSD.dll and its exported functions are prefaced with MyFSD_*.

Fsdmgr provides service functions to FSDs. The FSDMGR_RegisterVolume, FSDMGR_CreateFileHandle, and FSDMGR_CreateSearchHandle functions record a DWORD of volume-specific data the FSD needs to keep associated with volume. This volume-specific data is passed as the first parameter of these three functions.

Applications that access an installable file system use standard Win32 functions. For example, when an application wants to create a folder on a device that contains an installable file system, it calls CreateDirectory. Fsdmgr recognizes that the path is to a device containing an installable file system and calls the appropriate function, which in the case of the MyFSD file system is MyFSD_CreateDirectoryW. That is, the application calls CreateDirectory, causing Fsdmgr to call MyFSD_CreateDirectoryW.