Chilkat Examples

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Delphi DLL Web API Examples

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(Delphi DLL) OneNote - Get Page HTML Content

Download the HTML content of a OneNote page. Also iterates over the images and attachments on the OneNote page and downloads the content for each.

For more information, see https://docs.microsoft.com/en-us/graph/api/page-get?view=graph-rest-1.0

Chilkat for Delphi Downloads

Chilkat non-ActiveX DLL for Delphi

Chilkat ActiveX DLL for Delphi

* The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, BinData, Xml;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
success: Boolean;
sbResponseBody: HCkStringBuilder;
respStatusCode: Integer;
xml: HCkXml;
sbState: HCkStringBuilder;
url: PWideChar;
bd: HCkBinData;

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

http := CkHttp_Create();

// Implements the following CURL command:

// curl -X GET https://graph.microsoft.com/v1.0/me/onenote/pages/{id}/content?includeIDs=true \
//   -H 'authorization: Bearer ACCESS_TOKEN'

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

// Adds the "Authorization: Bearer ACCESS_TOKEN" header.
CkHttp_putAuthToken(http,'ACCESS_TOKEN');

CkHttp_SetUrlVar(http,'page_id','0-d2298668edd74dccac7f821fa378bf64!41-3A33FCEB9B74CC15!20350');

sbResponseBody := CkStringBuilder_Create();
success := CkHttp_QuickGetSb(http,'https://graph.microsoft.com/v1.0/me/onenote/pages/{$page_id}/content?includeIDs=true',sbResponseBody);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

Memo1.Lines.Add('HTML content:');
Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponseBody));

respStatusCode := CkHttp_getLastStatus(http);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkHttp__lastHeader(http));
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

// Let's get the images and attached files.
// Here's sample HTML content with 2 images and one PDF attachment:

// <html lang="en-US">
// 	<head>
// 		<title>A page with rendered images and an attached file</title>
// 		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
// 		<meta name="created" content="2020-10-23T12:00:00.0000000" />
// 	</head>
// 	<body data-absolute-enabled="true" style="font-family:Calibri;font-size:11pt">
// 		<div id="div:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{32}" data-id="_default" style="position:absolute;left:48px;top:120px;width:624px">
// 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{39}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s an image from an online source:</p>
// 			<img id="img:{ee18fe8d-b219-4baf-9b4d-4fc680579f0d}{1}" alt="an image on the page" width="500" height="500" src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-e71b45b763484921b4200e32c2439a47!1-3A33FCEB9B74CC15!20350/$value" data-src-type="image/jpeg" data-fullres-src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-e71b45b763484921b4200e32c2439a47!1-3A33FCEB9B74CC15!20350/$value" data-fullres-src-type="image/jpeg" />
// 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{43}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s an image uploaded as binary data:</p>
// 			<img id="img:{ee18fe8d-b219-4baf-9b4d-4fc680579f0d}{3}" alt="an image on the page" width="300" height="225" src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-a60516b962b842f2ae9bec75c16b31de!1-3A33FCEB9B74CC15!20350/$value" data-src-type="image/jpeg" data-fullres-src="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-a60516b962b842f2ae9bec75c16b31de!1-3A33FCEB9B74CC15!20350/$value" data-fullres-src-type="image/jpeg" />
// 			<p id="p:{b130eb6c-638a-4f97-8f7e-b6d9e2e88bf9}{47}" style="margin-top:5.5pt;margin-bottom:5.5pt">Here&#39;s a file attachment:</p>
// 			<object data-attachment="FileName.pdf" type="application/pdf" data="https://graph.microsoft.com/v1.0/users('admin@chilkat.io')/onenote/resources/0-9e685efb33a24a6a8de1b9c707d28385!1-3A33FCEB9B74CC15!20350/$value" />
// 		</div>
// 	</body>
// </html>

xml := CkXml_Create();
CkXml_LoadSb(xml,sbResponseBody,True);

// Iterate over each element in the XML.  Each time we find an "img" or "object", download the data.
// (The sbState is an object used to keep track of the current state of the traversal.)
sbState := CkStringBuilder_Create();

bd := CkBinData_Create();
while CkXml_NextInTraversal2(xml,sbState) <> False do
  begin

    if (CkXml_TagEquals(xml,'img') = True) then
      begin
        Memo1.Lines.Add('img id: ' + CkXml__getAttrValue(xml,'id'));
        url := CkXml__getAttrValue(xml,'src');
        CkBinData_Clear(bd);
        success := CkHttp_QuickGetBd(http,url,bd);
        if (success = False) then
          begin
            Memo1.Lines.Add(CkHttp__lastErrorText(http));
            Exit;
          end;
        Memo1.Lines.Add('Downloaded from ' + url);
        Memo1.Lines.Add('----');
        // If desired, bd.WriteFile to save the contents of bd to a file..
      end;

    if (CkXml_TagEquals(xml,'object') = True) then
      begin
        Memo1.Lines.Add('data-attachment: ' + CkXml__getAttrValue(xml,'data-attachment'));
        Memo1.Lines.Add('type: ' + CkXml__getAttrValue(xml,'type'));
        url := CkXml__getAttrValue(xml,'data');
        CkBinData_Clear(bd);
        success := CkHttp_QuickGetBd(http,url,bd);
        if (success = False) then
          begin
            Memo1.Lines.Add(CkHttp__lastErrorText(http));
            Exit;
          end;
        Memo1.Lines.Add('Downloaded from ' + url);
        Memo1.Lines.Add('----');
        // If desired, bd.WriteFile to save the contents of bd to a file..
      end;
  end;

Memo1.Lines.Add('Success.');

CkHttp_Dispose(http);
CkStringBuilder_Dispose(sbResponseBody);
CkXml_Dispose(xml);
CkStringBuilder_Dispose(sbState);
CkBinData_Dispose(bd);

end;

 

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