Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
How to draw custom Window Caption on FoxPro form
Custom GDI+ class
Round FoxPro form
How to put a horizontal text scrolling on the form (a news line, marquee)
How to change display settings: screen resolution, screen refresh rate
Obtaining names and positions for shortcuts located on the Windows Desktop
Browsing Windows Known Folders (Special Folders)
GDI+: Implementing image scrolling with inertia
Creating a console window for Visual FoxPro application
How to make a VFP form fading out when released (GDI version)
Storing content of the Clipboard to a bitmap file
How to find which fonts Windows uses for drawing captions, menus and message boxes
Printing Image File, programmatically set print page orientation to landscape
Storing screen shot of a form to bitmap file
Reading and setting system access privileges for the current process
Creating a clipping region from the path selected into the device context of a form
Vertical Label control
Generating random cryptographic keys
How to copy the image of a form to the Clipboard using Bitmap API functions
Pocket PC: custom RAPI class for operating with files and folders on mobile device
Enumerating devices installed on the local machine
Splash Screen for the VFP application
Class for sound recording
Moving shortcut to a specified position on the Windows Desktop
How to ping a remote site using ICMP API calls

User rating: 0/10 (0 votes)
Rate this code sample:
  • ~
More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
click to open
Before you begin:
The Ping class presents several API functions -- IcmpCreateFile, IcmpCloseHandle, IcmpSendEcho and others -- that used to send an ICMP Echo request and get a reply (RTT, round-trip time).

This is interesting, the same set of ICMP functions may exist in two libraries, ICMP.DLL and IPHLPAPI.DLL, on WinXP/2K computer.

See also:
  • How to ping a remote site using IP Helper API calls
  • How to retrieve adapter information for the local computer (including MAC address)
  • Obtaining addresses for the adapters on the local computer (Win XP/2003/Vista)
  • Using NetWkstaTransportEnum to obtain MAC Address of remote server

      Members area. Log in to view this example.
      User name:
      Forgot your password?
      Sign up for
    the Membership

    User rating: 0/10 (0 votes)
    Rate this code sample:
    • ~
    4122 bytes  
    Created: 2005-04-12 11:53:00  
    Modified: 2011-12-10 09:20:22  
    Visits in 7 days: 92  
    Listed functions:
    Printer friendly API declarations
    My comment:
    The ICMP, Internet Control Message Protocol, an extension to the Internet Protocol that is generally used by PING utilities. This protocol is handy for generation of error messages, test packets, and informational messages related to IP.

    It is different from TCP and UDP protocols by both the purpose and implementation. RFC792 defines the ICMP.
    Word Index links for this example:
    Translate this page:
      Spanish    Portuguese    German    French    Italian offers instant, free translations of text or web pages.
    User Contributed Notes:
    JimW | 2010-12-13 15:59:56
    I think there is a small error in the ToString() method.

    For the first line of the method, rather than:

    IF .errorcode=0

    I think it should be:

    IF this.errorcode=0

    Copyright 2001-2015 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 (5.5.44), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
    Last Topics Visited (
    26 sec.Function: 'RasPhonebookDlg'
    2.57 min.Example: 'Downloading files from the FTP server using InternetReadFile'
    15.04 hrs.Function: 'FindClose'
    Function group: 'File Management'
    15.06 hrs.Function: 'CloseHandle'
    1 day(s)Function: 'waveOutOpen'
    Function group: 'Windows Multimedia'
     Function: 'mixerGetNumDevs'
    Function group: 'Windows Multimedia'
     Example: 'Winsock: sending email messages (SMTP, port 25)'
    Advertise here!