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Delphi ActiveX Examples


ASN.1
Amazon S3
Amazon S3 (new)
Amazon SES
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Azure Cloud Storage
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Box
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eBay

 

 

 

(Delphi ActiveX) OneDrive -- Download Binary File to Memory

Downloads a binary file (such as JPG, PDF, etc.) into a BinData object.

Note: This example requires Chilkat v9.5.0.68 or greater.

Chilkat for Delphi Downloads

Chilkat ActiveX DLL for Delphi

Chilkat non-ActiveX DLL for Delphi

* The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_v9_5_0_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
fileData: TChilkatBinData;
url: WideString;
success: Integer;

begin
//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

http := TChilkatHttp.Create(Self);

//  Use your previously obtained access token here:
//  See the following examples for getting an access token:
//     Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
//     Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
//     Refresh Access Token (Azure AD v2.0 Endpoint).
//     Refresh Access Token (Azure AD Endpoint).

//  (Make sure your token was obtained with the FilesRead or Files.ReadWrite scope.)
http.AuthToken := 'MICROSOFT_GRAPH_ACCESS_TOKEN';

//  Sends the following GET request:
//  GET https://graph.microsoft.com/v1.0/me/drive/root:/{item-path}:/content

//  Make sure to automatically follow redirects
http.FollowRedirects := 1;

//  This example will download /Misc/starfish.jpg
http.SetUrlVar('item_path','Misc/starfish.jpg');

fileData := TChilkatBinData.Create(Self);
url := 'https://graph.microsoft.com/v1.0/me/drive/root:/{$item_path}:/content';
success := http.DownloadBd(url,fileData.ControlInterface);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

//  If the response status code was not 200, then it failed.
if (http.LastStatus <> 200) then
  begin
    Memo1.Lines.Add('Response Status Code = ' + IntToStr(http.LastStatus));
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

//  If we got here, then the file was successfully downloaded.
Memo1.Lines.Add('Download binary from OneDrive successful.');
Memo1.Lines.Add('The file is contained in fileData.');
end;

 

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