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From: "Axel Rietschin" <Axel_Rietschin@csi.com>
Newsgroups: comp.os.ms-windows.programmer.misc,comp.os.ms-windows.programmer.nt.kernel-mode,comp.os.ms-windows.programmer.win32,comp.windows,comp.windows.ms.programmer
Subject: Re: Disk Cache Control
Date: Fri, 7 Nov 1997 06:02:44 +0100
Organization: Zippo News Service [http://www.zippo.com]
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Albert P. Belle Isle wrote in message <3461FF01.3DA7@cerberus-sys.com>...
>Lance Larsen wrote:
>>
>> Does anyone know how I can programmatically control the Windows (95/NT)
disk
>> caching to force a cache commit?  C++ or BASIC code fragments would be
greatly
>> appreciated.
>>
>> Please include the following string in your reply so I can find it:
>> 4583575C38CE4000E8
>
>FlushFileBuffers( file-handle )
>
>[standard Win32 API call to flush VCACHE]
>

and here is your code fragment:

#include <windows.h>
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR
lpCmdLine, int nCmdShow)
{
 char szStrings[2048], *p = szStrings;
 GetLogicalDriveStrings (sizeof szStrings, szStrings);
 while (*p) {
  if (*p > 'B' || *p > 'b') {
   UINT nDriveType = GetDriveType (p);
   if (nDriveType >= DRIVE_REMOVABLE && nDriveType != DRIVE_CDROM) {
    char szDev[40];
    HANDLE hDevice;
    wsprintf (szDev, "\\\\.\\%c:", *p);
    if (INVALID_HANDLE_VALUE != (hDevice = CreateFile (szDev, GENERIC_WRITE,
FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL))) {
     FlushFileBuffers (hDevice);
     CloseHandle (hDevice);
    }
   }
  }
  p += strlen (p) + 1;
 }
 return (0);
}

Axel Rietschin