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Delphi ActiveX Examples

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(Delphi ActiveX) Read RSS Feed

Sample code showing how to read an RSS feed and emit the contents.

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
rss: TChilkatRss;
success: Integer;
rssChannel: IChilkatRss;
numItems: Integer;
i: Integer;
rssItem: IChilkatRss;
numCategories: Integer;
j: Integer;

begin
rss := TChilkatRss.Create(Self);

//  Download from the feed URL:
success := rss.DownloadRss('http://www.nytimes.com/services/xml/rss/nyt/HomePage.xml');
if (success <> 1) then
  begin
    Memo1.Lines.Add(rss.LastErrorText);
    Exit;
  end;

//  Get the 1st channel.

rssChannel := rss.GetChannel(0);
if (rssChannel = nil ) then
  begin
    Memo1.Lines.Add('No channel found in RSS feed.');
    Exit;
  end;

//  Display the various pieces of information about the channel:
Memo1.Lines.Add('Title: ' + rssChannel.GetString('title'));
Memo1.Lines.Add('Link: ' + rssChannel.GetString('link'));
Memo1.Lines.Add('Description: ' + rssChannel.GetString('description'));

//  For each item in the channel, display the title, link,
//  publish date, and categories assigned to the post.
numItems := rssChannel.NumItems;

for i := 0 to numItems - 1 do
  begin
    rssItem := rssChannel.GetItem(i);

    Memo1.Lines.Add('----');
    Memo1.Lines.Add('Title: ' + rssItem.GetString('title'));
    Memo1.Lines.Add('Link: ' + rssItem.GetString('link'));
    Memo1.Lines.Add('pubDate: ' + rssItem.GetString('pubDate'));

    numCategories := rssItem.GetCount('category');

    if (numCategories > 0) then
      begin
        for j := 0 to numCategories - 1 do
          begin
            Memo1.Lines.Add('    category: ' + rssItem.MGetString('category',j));
          end;

      end;

  end;
end;

 

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