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Home > Forums > Programmers > DBMS Packages > Microsoft: FoxPro > FAQs

Microsoft: FoxPro FAQ

API Functions

How to retreive HTML code from a web page by Mike Gagnon
faq184-3447
Posted: 13 Apr 03


PUBLIC oForm
oForm = CREATEOBJECT("form")
oForm.addobject("edit1","editbox")
oForm.edit1.visible=.t.
oform.height = 400
oform.width = 400
oform.edit1.width=390
oform.edit1.height=390
oForm.autocenter=.t.
oForm.edit1.controlsource = "mycursor.contents"

Create Cursor myCursor (contents m)
Append Blank
Replace contents With FETCHURL( "http://www.microsoft.com" ) && Change this as required
oForm.show()
Function FETCHURL
Lparameters pcUrlName
Declare Integer InternetOpen In wininet.Dll String sAgent, ;
    INTEGER lAccessType, String sProxyName, ;
    STRING sProxyBypass, Integer lFlags

Declare Integer InternetOpenUrl In wininet.Dll ;
    INTEGER hInternetSession, String sUrl, String sHeaders, ;
    INTEGER lHeadersLength, Integer lFlags, Integer lContext

Declare Integer InternetReadFile In wininet.Dll Integer hfile, ;
    STRING @sBuffer, Integer lNumberofBytesToRead, Integer @lBytesRead

Declare short InternetCloseHandle In wininet.Dll Integer hInst

#Define INTERNET_OPEN_TYPE_PRECONFIG 0
#Define INTERNET_OPEN_TYPE_DIRECT 1
#Define INTERNET_OPEN_TYPE_PROXY 3
#Define SYNCHRONOUS 0
#Define INTERNET_FLAG_RELOAD 2147483648
#Define CR Chr(13)

Local lsAgent, lhInternetSession, lhUrlFile, llOk, lnOk, lcRetVal, lcReadBuffer, lnBytesRead
lsAgent = "VPF"

lhInternetSession = InternetOpen( lsAgent, INTERNET_OPEN_TYPE_PRECONFIG, ;
    '', '', SYNCHRONOUS)
If lhInternetSession = 0
    Wait Window "Internet session cannot be established" Time 2
    Return .Null.
Endif
lhUrlFile = InternetOpenUrl( lhInternetSession, pcUrlName, '', 0, ;
    INTERNET_FLAG_RELOAD, 0)
If lhUrlFile = 0
    Wait Window "URL cannot be opened"
    Return .Null.
Endif
lcRetVal = ""
llOk = .T.
Do While llOk
    lsReadBuffer = Space(32767)
    lnBytesRead = 0
    lnOk = InternetReadFile( lhUrlFile, @lsReadBuffer, Len(lsReadBuffer), @lnBytesRead)
    If ( lnBytesRead > 0 )
        lcRetVal = lcRetVal + Left( lsReadBuffer, lnBytesRead )
    Endif
    llOk = ( lnOk = 1 ) And ( lnBytesRead > 0 )
Enddo
InternetCloseHandle( lhUrlFile )
InternetCloseHandle( lhInternetSession )
Return lcRetVal
Endfunc


Mike Gagnon

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