Capturing a Screen Shot of a TWebBrowser Content ，Web Page in Delphi
The TWebBrowser Delphi control provides access to the Web browser functionality from your Delphi apps - to allow you to create a customized Web browsing application or to add Internet, file and network browsing, document viewing, and data downloading capabilities to your applications.
Web Page Screen Shot
You might need to programmatically grab the screen shot of the current page loaded in the web browser control.A screen shot (screen capture) is a copy of the screen's contents that can be saved as a graphics file.
Web Browser screen shot is a graphics copy of the content on the web browser control - usually a web page (document).
The custom function WebBrowserScreenShot will capture the contents of a TWebBrower's client area into a JPEG image and save it to a specified file.
uses ActiveX;
procedure WebBrowserScreenShot(const wb: TWebBrowser; const fileName: TFileName) ;
var
viewObject : IViewObject;
r : TRect;
bitmap : TBitmap;
begin
if wb.Document <> nil then
begin
wb.Document.QueryInterface(IViewObject, viewObject) ;
if Assigned(viewObject) then
try
bitmap := TBitmap.Create;
try
r := Rect(0, 0, wb.Width, wb.Height) ;
bitmap.Height := wb.Height;
bitmap.Width := wb.Width;
viewObject.Draw(DVASPECT_CONTENT, 1, nil, nil, Application.Handle, bitmap.Canvas.Handle, @r, nil, nil, 0) ;
with TJPEGImage.Create do
try
Assign(bitmap) ;
SaveToFile(fileName) ;
finally
Free;
end;
finally
bitmap.Free;
end;
finally
viewObject._Release;
end;
end;
end; A sample usage: navigate to a web site in the form's OnCreate event, take the screen shot in the webbrowser's OnNavigateComplete2 event:
procedure TForm1.FormCreate(Sender: TObject) ;
begin
WebBrowser1.Navigate('http://delphi.about.com') ;
end;
procedure TForm1.WebBrowser1NavigateComplete2(ASender: TObject; const pDisp: IDispatch; var URL: OleVariant) ;
begin
WebBrowserScreenShot(WebBrowser1,'c:\WebBrowserImage.jpg') ;
end;