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(Delphi DLL) OneDrive -- Download Binary File to MemoryDownloads a binary file (such as JPG, PDF, etc.) into a BinData object. Note: This example requires Chilkat v9.5.0.68 or greater.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, BinData, Http; ... procedure TForm1.Button1Click(Sender: TObject); var http: HCkHttp; fileData: HCkBinData; url: PWideChar; success: Boolean; begin // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. http := CkHttp_Create(); // 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.) CkHttp_putAuthToken(http,'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 CkHttp_putFollowRedirects(http,True); // This example will download /Misc/starfish.jpg CkHttp_SetUrlVar(http,'item_path','Misc/starfish.jpg'); fileData := CkBinData_Create(); url := 'https://graph.microsoft.com/v1.0/me/drive/root:/{$item_path}:/content'; success := CkHttp_DownloadBd(http,url,fileData); if (CkHttp_getLastMethodSuccess(http) <> True) then begin Memo1.Lines.Add(CkHttp__lastErrorText(http)); Exit; end; // If the response status code was not 200, then it failed. if (CkHttp_getLastStatus(http) <> 200) then begin Memo1.Lines.Add('Response Status Code = ' + IntToStr(CkHttp_getLastStatus(http))); 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.'); CkHttp_Dispose(http); CkBinData_Dispose(fileData); end; |
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