GetFileVersionInfoSizeExA function (winver.h)

Determines whether the operating system can retrieve version information for a specified file. If version information is available, GetFileVersionInfoSizeEx returns the size, in bytes, of that information.

Syntax

DWORD GetFileVersionInfoSizeExA(
  [in]            DWORD   dwFlags,
  [in]            LPCSTR  lpwstrFilename,
  [out, optional] LPDWORD lpdwHandle
);

Parameters

[in] dwFlags

Type: DWORD

Controls which MUI DLLs (if any) from which the version resource is extracted. Zero or more of the following flags.

[in] lpwstrFilename

Type: LPCTSTR

The name of the file of interest. The function uses the search sequence specified by the LoadLibrary function.

[out, optional] lpdwHandle

Type: LPDWORD

When this function returns, contains a pointer to a variable that is set to zero because this function sets it to zero. This parameter exists for historical reasons.

Return value

Type: DWORD

If the function succeeds, the return value is the size, in bytes, of the file's version information.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

Call the GetFileVersionInfoSizeEx function before calling the GetFileVersionInfoEx function. The size returned by GetFileVersionInfoSizeEx indicates the buffer size required for the version information returned by GetFileVersionInfoEx.

Requirements

See also

Conceptual

GetFileVersionInfoEx

GetFileVersionInfoSize

Reference

VS_VERSIONINFO

VerQueryValue

Version Information