Using Win32 functions in Visual FoxPro Image Gallery
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More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
* you do not need to call the WSAStartup function
* before using these functions

DECLARE INTEGER ntohs IN ws2_32 INTEGER netshort
DECLARE INTEGER ntohl IN ws2_32 INTEGER netlong
DECLARE INTEGER htonl IN ws2_32 INTEGER hostlong
DECLARE INTEGER htons IN ws2_32 INTEGER hostshort

* HOST to NET  u_short -- htons
* NET  to HOST u_short -- ntohs
* HOST to NET  u_long  -- htonl
* NET  to HOST u_long  -- ntohl

? "*** Working with U_SHORT values"
lnFtpPort = htons(21)
? "Converted to the network byte order:",lnFtpPort
? "Host byte order again:", ntohs(lnFtpPort)
?

? "*** Working with U_LONG values"
lnTelnetPort = htonl(23)
? "Converted to the network byte order:", lnTelnetPort
? "Host byte order again:", ntohl(lnTelnetPort)
?    

DECLARE INTEGER inet_addr IN ws2_32 STRING cp
DECLARE STRING inet_ntoa IN ws2_32 INTEGER in_addr

* The inet_addr function converts a string containing an (Ipv4) 
* Internet Protocol dotted address into a proper address 
* for the IN_ADDR structure
? "*** Converting IP addresses"
lnIP = inet_addr("127.0.0.1")
? "String value converted into a proper address:", lnIP

* The inet_ntoa function converts an (Ipv4) Internet network address 
* into a string in Internet standard dotted format
? "Converted back to a string value:", inet_ntoa (lnIP)


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1319 bytes  
Created: 2001-12-19 19:02:10  
Modified: 2001-12-19 19:02:56  
Visits in 7 days: 85  
Listed functions:
htonl
htons
inet_addr
inet_ntoa
ntohl
ntohs
WSAStartup
Printer friendly API declarations
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