Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Splash Screen for the VFP application
Using Path functions from Shell Lightweight Utility APIs (shlapi.dll)
Using the LoadImage function to have a bitmap file loaded and displayed on VFP main window
Vertical Label control
Displaying animated images on FoxPro form with BitBlt and StretchBlt functions
Enumerating servers of the specified type (e.g. SQL Server) in the primary domain
How to fill a buffer with random bytes using Cryptography API Functions
How to perform Base64 encoding/decoding using Cryptography API Functions
Simple printer queue monitor: deletes, pauses, resumes print jobs for local printer
Storing screen shot of a form to enhanced metafile (*.emf)
Switching between keyboard layouts
The original LoadPicture() function in VFP returns valid handles to bitmaps, icons, cursors, and metafiles
Using InternetSetFilePointer when resuming interrupted download from the Internet
Using Shell for performing operations on files
Converting long file names to the short format and vice versa
Dragging files from Explorer window and dropping them on FoxPro control (requires VFP9)
How to retrieve version information for the specified file
Monitoring changes in a directory
Retrieving local computer and user names
Start an executable from VFP application by using the CreateProcess
Using custom Simple MapiSendMail class
How to enumerate, add and delete shares on the local computer (WinNT/XP)
Reading and setting explicit Application User Model ID for the current process (Win7)
Displaying bitmap using the AlphaBlend function
Obtaining I/O counts for the current process

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More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
#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: 70  
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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