File Management Functions


GetFileSizeEx Function

Retrieves the size of the specified file.

Syntax

C++ 
BOOL WINAPI GetFileSizeEx(
  __in   HANDLE hFile,
  __out  PLARGE_INTEGER lpFileSize
);

Parameters

hFile [in]

A handle to the file. The handle must have been created with either the GENERIC_READ or GENERIC_WRITE access right. For more information, see File Security and Access Rights.

lpFileSize [out]

A pointer to a LARGE_INTEGER structure that receives the file size, in bytes.

Return Value

If the function succeeds, the return value is nonzero.

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

Remarks

Transacted Operations:  If there is a transaction bound to the file handle, then the function returns information for the isolated file view.

Requirements

Minimum supported clientWindows 2000 Professional
Minimum supported serverWindows 2000 Server
HeaderWinBase.h (include Windows.h)
LibraryKernel32.lib
DLLKernel32.dll

See Also

File Management Functions
LARGE_INTEGER

Send comments about this topic to Microsoft

Build date: 11/12/2009

Tags :


Community Content

dmex
vb.net syntax
<DllImport("kernel32.dll", SetLastError:=True)> 
Public Shared Function GetFileSizeEx(ByVal hFile As IntPtr, ByRef lpFileSize As LARGE_INTEGER) As Boolean
End Function
Tags : vb.net

dmex
C# syntax
[DllImport("kernel32.dll", SetLastError=true)]
internal static extern bool GetFileSizeEx(IntPtr hFile, ref LARGE_INTEGER lpFileSize);
Tags : c#

Thomas Danecker
C# syntax
Int64 should also work:
[DllImport("kernel32.dll", SetLastError=true)]
internal static extern bool GetFileSizeEx(SafeHandle hFile, ref long lpFileSize);
And please always use SafeHandle instead of IntPtr for handles!
Tags :

Page view tracker