Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Custom GDI+ class
Obtaining names and positions for shortcuts located on the Windows Desktop
Winsock: sending email messages (SMTP, port 25)
GDI+: Implementing image scrolling with inertia
Custom HttpRequest class (WinHTTP)
Splash Screen for the VFP application
Browsing Windows Known Folders (Special Folders)
Detecting changes in connections to removable drives (VFP9)
Displaying dimmed window behind VFP top-level form
Printing Image File, programmatically set print page orientation to landscape
Moving shortcut to a specified position on the Windows Desktop
Compressing and decompressing files with Windows API Runtime Library routines
Generating random cryptographic keys
Monitoring clipboard content changes (VFP9)
Placing On-screen Alert on top of all windows
Switching between keyboard layouts
How to enumerate logon sessions on local computer
Finding out if the current user is the Guest account
Capturing keyboard activity of another application with the Raw Input API (VFP9)
Disconnecting USB Mass Storage Device programmatically
How to enable the SE_SHUTDOWN_NAME privilege for the application
How to find which fonts Windows uses for drawing captions, menus and message boxes
Pocket PC: custom RAPI class for operating with files and folders on mobile device
Custom FTP Class for Visual FoxPro application
A client for testing non-blocking Winsock server

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:

This code is a client part created for testing the non-blocking Winsock server sample code.

First run server code on any computer on your network. Enter acting server IP and port values on the client form.

Test button sends a short standard message.
Send button sends a message entered in the text box.
Transmit button sends a selected file.

All sent messages are stored in a memo column of a cursor on the server side.

* * *
VB.Net version of this code works in a similar way. It can send text strings and files to the non-blocking Winsock server. So you may use both codes, FoxPro and VB.Net, for testing the server.

See also:
  • How to create non-blocking Winsock server
  • Using the NetMessageBufferSend to send messages on the network
  • Using mailslots to send messages on the network
  • Peer-to-peer LAN messenger built with Mailslot API functions
  • Using WM_COPYDATA for interprocess communication
  •  
      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:
    • ~
    5368 bytes  
    Created: 2003-07-07 23:30:45  
    Modified: 2011-12-10 09:20:22  
    Visits in 7 days: 63  
    Listed functions:
    closesocket
    htons
    inet_addr
    send
    socket
    WSACleanup
    WSAStartup
    Printer friendly API declarations
    My comment:
    After establishing a connection and sending messages the client program usually keeps several local ports in the TIME_WAIT state for a short time.

    List of local ports in use can be obtained through the system NETSTAT command, or use example in this reference Displaying all TCP connections for the local system to get the list.

    Working with the NETSTAT Command.

    And there is a link with some TIME_WAIT related info on Experts-Exchange site.

    #kwd: sln_winsock.
    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:
    Rob | 2006-03-19 11:38:12
    does running this client portion ties up this copy of VFP from doing other tasks until the message is received?
    A.M. | 2006-03-19 16:40:36
    Server part: yes. You may try asynch calls, though anyway the state has to be checked by timer. There is no way to start a separate thread in pure VFP code.
    ezequiel@professional-soft.com | 2006-08-01 06:58:29
    What is it necessary to do to receive information of response of the server?

    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 (5.6.34), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
    Last Topics Visited (54.205.43.70)
    6 sec.Function: 'mmioDescend'
    Function group: 'Windows Multimedia'
    12 sec.Function: 'RtlCompressBuffer'
    15 sec.Example: 'Retrieving top-child window for the VFP form'
    18 sec.Function: 'NetGroupEnum'
    Function group: 'Network Management'
    21 sec.Example: 'Changing file attributes'
    25 sec.Function: 'CryptUnprotectData'
    Function group: 'Cryptography Reference'
    28 sec.Function: 'JetCommitTransaction'
    Function group: 'Extensible Storage Engine (ESE, Jet Blue)'
    31 sec.
    Function group: 'Keyboard Input'
    34 sec.Function: 'IsValidSid'
    37 sec.Function: 'SCardListReaderGroups'
    Google
    Advertise here!