Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
GDI+: copying to the Clipboard (a) image of active FoxPro window/form, (b) image file
Capturing keyboard activity of another application with the Raw Input API (VFP9)
Using Video Capture: displaying on FoxPro form frames and previewing video obtained from a digital camera
Enumerating raw input devices attached to the system (keyboard, mouse, human interface device)
Using Month Calendar Control (VFP9, Comctl32.dll)
GDI+: Implementing image scrolling with inertia
Copying picture of the active form to the Clipboard using Enhanced Metafile API functions
Enumerating data formats currently available on the clipboard
Custom GDI+ class
Converting Unicode data from the Clipboard to a character string using a given code page
Displaying dimmed window behind VFP top-level form
Winsock: sending email messages (SMTP, port 25)
Detecting changes in connections to removable drives (VFP9)
Mapping and disconnecting network drives
Winsock: reading email messages (POP3, port 110)
Monitoring clipboard content changes (VFP9)
Creating a clipping region from the path selected into the device context of a form
Displaying icons in the system tray (VFP9)
How to load a user profile
Obtaining names and positions for shortcuts located on the Windows Desktop
Windows Shell Icons displayed and exported to ICO files (Vista)
Browsing Windows Known Folders (Special Folders)
Current keyboard type
How to change display settings: screen resolution, screen refresh rate
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
Versions:
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:
      Password:
     
     
      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: 46  
    Listed functions:
    gethostbyname
    GlobalSize
    IcmpCloseHandle
    IcmpCreateFile
    IcmpSendEcho
    inet_ntoa
    WSACleanup
    WSAStartup
    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  
    FreeTranslation.com 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 2001-2016 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 (5.6.30), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
    Last Topics Visited (54.166.196.232)
    3 day(s)Function: 'GlobalAlloc'
    Function group: 'Memory Management'
     Function: 'NetShareEnum'
     Example: 'Validating the heap of the calling process'
     Function: 'CommDlgExtendedError'
    Google
    Advertise here!