Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
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Creating two-byte hashes for a list of URLs
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Obtaining list of tables stored in an ODBC Data Source
Retrieving file information for the VFP executable running
Retrieving the System Time adjustment
Accessing a CD device (cdaudio) with Multimedia Command Strings
GetFileOwner - Get the owner of an NTFS file
How to save registry key including its subkeys and values to a file
Copying files as a transacted operation (Vista)
Pocket PC: modifying keys in the System Registry
How to intercept window messages sent to VFP form
Starting a dialog box for connecting to network resources and passing input parameters
Using Beep and Sleep functions to make the old tin buzz sing (WinNT only?)
Using Multimedia Command Strings to play MIDI files
How to enumerate terminal servers within the specified Windows domain
GDI+: enumerating fonts installed on the system
GDI+: loading image file, drawing on it, saving the result to another file
Terminating all running applications from a VFP program
Converting characters to upper or lower case
Determining whether or not the system is connected to the Internet
Listing device drivers in the system: load addresses, names
CryptoAPI: retrieving list of providers
Extended OS Version info
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: 67  
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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