PowerBuilder Requires Chilkat v11.0.0+

Facebook Upload Photo from Local File

See more Facebook Examples

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

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

li_Success = 0

//  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.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.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 = 0 then
    Write-Debug loo_Req.LastErrorText
    destroy loo_Http
    destroy loo_Req
    return
end if

//  Upload the image file..
loo_Resp = create oleobject
li_rc = loo_Resp.ConnectToNewObject("Chilkat.HttpResponse")

li_Success = loo_Http.HttpSReq("graph.facebook.com",443,1,loo_Req,loo_Resp)
if li_Success = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Req
    destroy loo_Resp
    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_Http
destroy loo_Req
destroy loo_Resp