Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Start an executable from VFP application by using the CreateProcess
The DetectAutoProxyUrl function identifies the auto-config script location
Using InternetSetFilePointer when resuming interrupted download from the Internet
Using the Semaphore object
Winsock: reading and setting socket options
Dragging files from Explorer window and dropping them on FoxPro control (requires VFP9)
Drawing icons associated with the VFP main window
GDI+: creating scaled copy of image file
GDI+: printing image file
Memory usage info for current VFP session (WinNT only)
Printing text on the client area of the main VFP window
Quering waveform-audio output devices
Reading and setting Environment variables
Reading and setting the priority class values for the current process and thread
Setting the date and time that a file was created
Testing an ODBC connection for supporting specific functionality
URL: splitting into its component parts
Using Common Controls: the Header Control
Using the RestartDialog function -- restarting Windows
Winsock: how to retrieve a service information corresponding to a service name
An alternative way of setting Form.Closable to False
Another way to go online (it is not about choosing an ISP)
Changing file attributes
Creating a window using CreateWindowEx function
Obtaining I/O counts for the current process

User rating: 7/10 (1 votes)
Rate this code sample:
  • ~
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

User rating: 7/10 (1 votes)
Rate this code sample:
  • ~
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.
Word Index links for this example:
Translate this page:
  Spanish    Portuguese    German    French    Italian  
FreeTranslation.com offers instant, free translations of text or web pages.
User Contributed Notes:
There are no notes on this subject.


Copyright 2001-2017 News2News, Inc. Before reproducing or distributing any data from this site please ask for an approval from its owner. Unless otherwise specified, this page is for your personal and non-commercial use. The information on this page is presented AS IS, meaning that you may use it at your own risk. Microsoft Visual FoxPro and Windows are trade marks of Microsoft Corp. All other trademarks are the property of their respective owners. 

Privacy policy
Credits: PHP (4.4.9), an HTML-embedded scripting language, MySQL (5.6.35), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
Last Topics Visited (184.73.66.157)
2 sec.Function: 'SHGetFolderLocation'
3 sec.Example: 'How to retrieve adapter information for the local computer (including MAC address)'
5 sec.Example: 'How to print FoxPro form'
7 sec.
Function group: 'Authentication'
8 sec.Example: 'How to activate Windows Calculator'
10 sec.Function: 'MAPIFindNext'
Function group: 'Simple MAPI'
11 sec.Example: 'Reading and setting system access privileges for the current process'
13 sec.Function: 'GdipGetDpiX'
14 sec.Examples
Page 3
15 sec.Example: 'Reading keys in the specified section of the Win.ini file'
Google
Advertise here!