Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Storing registration key in the resources of an executable file
Testing Clipboard functions: emptying the clipboard
The DetectAutoProxyUrl function identifies the auto-config script location
Using an Event Object. Part B: running an application responding to events
Using mailslots to send messages on the network
Using the Semaphore object to allow only one instance of VFP application running
Converting image file to .ICO file
Creating an Open dialog box to specify the drive, directory, and name of a file to open (Shell32 version)
Deleting files into the Recycle Bin
Enumerating ports that are available for printing on a specified server
Enumerating Processes -- Win9*
MapiSendMail class for Visual FoxPro application
The window and its ancestors
Using the LoadImage function to have a bitmap file loaded and displayed on VFP main window
Adding supplementary data to AVI files
Class library providing access to the System Registry
How to hot-track menu item selection in top-level form (requires VFP9)
Peer-to-peer LAN messenger built with Mailslot API functions
Scanning the hierarchy of child windows down from the main VFP window
Start an executable from VFP application by using the CreateProcess
Testing an ODBC connection for supporting specific functionality
Using the DrawText function
Winsock: retrieving Web pages using sockets (HTTP, port 80)
Accessing LSA Policy object (Local Security Authority)
Obtaining I/O counts for the current process

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#DEFINE PROCESS_QUERY_INFORMATION 0x0400
#DEFINE PROCESS_VM_READ 4
DO declare

* retrieve a handle to the current process
hProcess = OpenProcess(;
    BITOR(PROCESS_QUERY_INFORMATION,PROCESS_VM_READ),;
    0, GetCurrentProcessId()) && application.ProcessId

IF hProcess = 0
    ? "OpenProcess failed:", GetLastError()
    RETURN
ENDIF

LOCAL cBuffer
cBuffer = REPLICATE(CHR(0), 48)
= GetProcessIoCounters(hProcess, @cBuffer)

? "ReadOperationCount:", buf64ToNum(SUBSTR(cBuffer,1,8))
? "WriteOperationCount:", buf64ToNum(SUBSTR(cBuffer,9,8))
? "OtherOperationCount:", buf64ToNum(SUBSTR(cBuffer,17,8))
? "ReadTransferCount:", buf64ToNum(SUBSTR(cBuffer,25,8))
? "WriteTransferCount:", buf64ToNum(SUBSTR(cBuffer,33,8))
? "OtherTransferCount:", buf64ToNum(SUBSTR(cBuffer,41,8))

= CloseHandle(hProcess)
* end of main

FUNCTION buf64ToNum(cBuffer)
    LOCAL nLo, nHi
    nLo = buf2dword(SUBSTR(cBuffer,1,4))
    nHi = buf2dword(SUBSTR(cBuffer,5,4))
RETURN m.nLo + m.nHi * (0xffffffff+1)

FUNCTION buf2dword(lcBuffer)
RETURN Asc(SUBSTR(lcBuffer, 1,1)) + ;
    BitLShift(Asc(SUBSTR(lcBuffer, 2,1)),  8) +;
    BitLShift(Asc(SUBSTR(lcBuffer, 3,1)), 16) +;
    BitLShift(Asc(SUBSTR(lcBuffer, 4,1)), 24)

PROCEDURE declare
    DECLARE INTEGER GetLastError IN kernel32
    DECLARE INTEGER GetCurrentProcessId IN kernel32
    DECLARE INTEGER CloseHandle IN kernel32 INTEGER hObject

    DECLARE INTEGER OpenProcess IN kernel32;
        INTEGER dwDesiredAccess,;
        INTEGER bInheritHandle, INTEGER dwProcId

    DECLARE INTEGER GetProcessIoCounters IN kernel32;
        INTEGER hProcess, STRING @lpIoCounters

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1586 bytes  
Created: 2008-03-26 17:14:26  
Modified: 2008-03-26 17:16:36  
Visits in 7 days: 30  
Listed functions:
CloseHandle
GetCurrentProcessId
GetLastError
GetProcessIoCounters
OpenProcess
Printer friendly API declarations
My comment:
The IO_COUNTERS structure contains I/O accounting information for a process or a job object. For a job object, the counters include all operations performed by all processes that have ever been associated with the job, in addition to all processes currently associated with the job.
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