[VB] mettere un'immagine da internet

[beog]

se voglio mettere un img da internet nel mio programma

es.
http://www.filmup.com/locand/allaricercadinemo.jpg


come devo fare?

Io ho provato a fare così:


MiaImmagine.Picture = LoadPicture("http://www.filmup.com/locand/allaricercadinemo.jpg")


Ma non va ... perchè?


Grazie, ciao

[cionci]

Devi scarica prima l'immagine in locale e poi visualizzarla...

Const scUserAgent = "API-Guide test program"
Const INTERNET_OPEN_TYPE_DIRECT = 1
Const INTERNET_OPEN_TYPE_PROXY = 3
Const INTERNET_FLAG_RELOAD = &H80000000
Const sURL = "http://www.microsoft.com/index.htm"
Private Declare Function InternetOpen Lib "wininet" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Long) As Long
Private Declare Function InternetCloseHandle Lib "wininet" (ByRef hInet As Long) As Long
Private Declare Function InternetReadFile Lib "wininet" (ByVal hFile As Long, ByVal sBuffer As String, ByVal lNumBytesToRead As Long, lNumberOfBytesRead As Long) As Integer
Private Declare Function InternetOpenUrl Lib "wininet" Alias "InternetOpenUrlA" (ByVal hInternetSession As Long, ByVal lpszUrl As String, ByVal lpszHeaders As String, ByVal dwHeadersLength As Long, ByVal dwFlags As Long, ByVal dwContext As Long) As Long
Private Sub Form_Load()
    'KPD-Team 1999
    'URL: http://www.allapi.net/
    'E-Mail: [email protected]

    Dim hOpen As Long, hFile As Long, sBuffer As String, Ret As Long
    'Create a buffer for the file we're going to download
    sBuffer = Space(1000)
    'Create an internet connection
    hOpen = InternetOpen(scUserAgent, INTERNET_OPEN_TYPE_DIRECT, vbNullString, vbNullString, 0)
    'Open the url
    hFile = InternetOpenUrl(hOpen, sURL, vbNullString, ByVal 0&, INTERNET_FLAG_RELOAD, ByVal 0&)
    'Read the first 1000 bytes of the file
    InternetReadFile hFile, sBuffer, 1000, Ret
    'clean up
    InternetCloseHandle hFile
    InternetCloseHandle hOpen
    'Show our file
    MsgBox sBuffer
End Sub

[matpez]

Non ti va perchè in quel parametro il LoadPicture richiede una Path fisica di un file...nn un URL

Per risolvere il tuo problema dovresti scaricare il file da internet e poi con il LoadPicture caricarlo nel tuo prg!

Se ti interessa fare così ti do una mano su questo lato

[maxithron]

Ci sarà una ragione per cui non puoi scaricarti l'immagine con un semplice "salva con nome" e poi metterla in una dir locale, vero?

[matpez]

come ha detto cionci è corretto, quello è la aprte di codice per scaricare un file!

[beog]

Cazspita qui la cosa diventa sempre più complicata!


e tra l'altro mi dice che

Private Declare Function InternetOpen Lib "wininet" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Long) As Long

non vale dentro una routine, ma dove devo incollare quel codice?

Grazie, ciao

[matpez]

All'inzio della form

[beog]

Ok ora ho capito qualcosa,

Dopo aver scaricato il file che mi serve, qual è il suo riferimento?
sBuffer?


devo fare Miaimm.picture = loadpicture (sBuffer) ?

E se l'img è più grande di 1kb?

Sembra che mi funzioni, però solo con i file HTM più piccoli di 1Kb..

Però a me serve una immg completa.

Grazie per la pazienza

[matpez]

Prova così

Const scUserAgent = "API-Guide test program"
Const INTERNET_OPEN_TYPE_DIRECT = 1
Const INTERNET_OPEN_TYPE_PROXY = 3
Const INTERNET_FLAG_RELOAD = &H80000000
Const sURL = "http://www.ublteam.com/Slayer/Comuni.rar"
Private Declare Function InternetOpen Lib "wininet" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Long) As Long
Private Declare Function InternetCloseHandle Lib "wininet" (ByRef hInet As Long) As Long
Private Declare Function InternetReadFile Lib "wininet" (ByVal hFile As Long, ByVal sBuffer As String, ByVal lNumBytesToRead As Long, lNumberOfBytesRead As Long) As Integer
Private Declare Function InternetOpenUrl Lib "wininet" Alias "InternetOpenUrlA" (ByVal hInternetSession As Long, ByVal lpszUrl As String, ByVal lpszHeaders As String, ByVal dwHeadersLength As Long, ByVal dwFlags As Long, ByVal dwContext As Long) As Long
Private Const TotDW = 1024

Private Sub Command1_Click()

  Dim nFreeFile     As Integer
    'KPD-Team 1999
    'URL: http://www.allapi.net/
    'E-Mail: [email protected]
    
    Dim sFileData As String
    Dim lSize As Long
    Dim hOpen As Long, hFile As Long, sBuffer As String, Ret As Long
    'Create a buffer for the file we're going to download
    sBuffer = Space(TotDW)
    'Create an internet connection
    hOpen = InternetOpen(scUserAgent, INTERNET_OPEN_TYPE_DIRECT, vbNullString, vbNullString, 0)
    'Open the url
    hFile = InternetOpenUrl(hOpen, sURL, vbNullString, ByVal 0&, INTERNET_FLAG_RELOAD, ByVal 0&)
    'Read the first 1024 bytes of the file
    sFileData = ""
    Do
      InternetReadFile hFile, sBuffer, TotDW, Ret
      'If Ret <> TotDW Then
        sFileData = sFileData & Left$(sBuffer, Ret)
        lSize = lSize + Ret
        ProgressBar1.Value = lSize
      'Else
        'sFileData = sFileData & sBuffer
      'End If
      DoEvents
    Loop Until Ret = 0
    'clean up
    InternetCloseHandle hFile
    InternetCloseHandle hOpen

    'scrittura del file
    nFreeFile = FreeFile
    Open "ciao.rar" For Output As #nFreeFile
      Print #nFreeFile, sFileData
    Close #nFreeFile
    
End Sub