Mega Code Archive
Get image properties of all images in a TWebbrowser
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Title: get image properties of all images in a TWebbrowser?
uses
MSHTML_TLB;
// First navigate to a page
// Zuerst eine Seite laden
procedure TForm1.Button1Click(Sender: TObject);
begin
Webbrowser1.Navigate('www.google.ch');
end;
// Then execute the following code:
// Dann diese Routine ausf hren:
procedure TForm1.Button2Click(Sender: TObject);
var
i: Word;
ImageWidth, ImageHeight: Integer;
ImageHref, ImageFileSize, ImageTextAlternative: string;
Document: IHtmlDocument2;
begin
// Loop through all images of a TWebbrowser
// Schleife ber alle Bilder im Webbrowser
for i := 0 to WebBrowser1.OleObject.Document.Images.Length - 1 do
begin
Document := WebBrowser1.Document as IHtmlDocument2;
// Retrieves the calculated width of the image.
ImageWidth := WebBrowser1.OleObject.Document.Images.Item(i).Width;
// Retrieves the height of the image.
ImageHeight := WebBrowser1.OleObject.Document.Images.Item(i).Height;
// Retrieves the file size of the image.
ImageFileSize := (Document.Images.Item(i, 0) as IHTMLImgElement).FileSize;
// Retrieves the entire URL that the browser uses to locate the image
ImageHref := (Document.Images.Item(i, 0) as IHTMLImgElement).Href;
// Retrieves a text alternative to the graphic.
ImageTextAlternative := (Document.Images.Item(i, 0) as IHTMLImgElement).alt;
// Show image information in a TListbox
ListBox1.Items.Add(Format('%s : %d x %d Pixels; %s Bytes; %s',
[ImageHref, ImageWidth, ImageHeight, ImageFileSize, ImageTextAlternative]));
end;
end;
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