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(PowerBuilder) Facebook Upload Photo from Local File

Uploads a new photo with a caption from a local file.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Http
oleobject loo_Req
integer li_Success
oleobject loo_Resp
string ls_ResponseJson

// This example assumes Chilkat HTTP to have been previously unlocked.
// See Global Unlock Sample for sample code.

loo_Http = create oleobject
li_rc = loo_Http.ConnectToNewObject("Chilkat_9_5_0.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Req = create oleobject
li_rc = loo_Req.ConnectToNewObject("Chilkat_9_5_0.HttpRequest")

loo_Req.HttpVerb = "POST"
loo_Req.ContentType = "multipart/form-data"
loo_Req.Path = "/v2.7/me/photos"

// Use the previously obtained access token.
// Note: The publish_actions scope is required to upload a photo.
loo_Req.AddHeader("Authorization","Bearer FACEBOOK-ACCESS-TOKEN")

// Send an "Expect: 100-continue" header in the request.
// This causes the HTTP server to end a 100-continue response
// immediately after receiving the HTTP header.  The client
// (Chilkat) will receive this intermediate response, and if
// it's not an error response, it knows that the HTTP server will
// accept the data that is forthcoming.
// The alternative is to get an error response after trying to upload
// the entire contents of the files.
loo_Req.AddHeader("Expect","100-continue")

// Set a photo caption.
loo_Req.AddParam("caption","Here are some penguins!")

// Additional parameters can be added to the request by 
// calling AddParam once per parameter.  
// See https://developers.facebook.com/docs/graph-api/reference/user/photos
// for more information about other optional parameters.

// Indicate the local file to be uploaded.
li_Success = loo_Req.AddFileForUpload("source","qa_data/jpg/penguins2.jpg")
if li_Success <> 1 then
    Write-Debug loo_Req.LastErrorText
    destroy loo_Http
    destroy loo_Req
    return
end if

// Upload the image file..
loo_Resp = loo_Http.SynchronousRequest("graph.facebook.com",443,1,loo_Req)
if loo_Http.LastMethodSuccess <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Req
    return
end if

// Examine the response body:
ls_ResponseJson = loo_Resp.BodyStr
Write-Debug ls_ResponseJson

// The response contains JSON, such as this:
// {"id":"10210224963435862","post_id":"10224048320139890_10210224963435862"}

destroy loo_Resp


destroy loo_Http
destroy loo_Req

 

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