Check uploaded image

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Check uploaded image

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#1 by (1 votes)

1

Is it possible to check when an image has been uploaded within a TImage ?

For example: I have a label that appears "Loading Image ..." when TImage loads any image, that label should disappear. Is it possible?

delphi

asked by anonymous 11.06.2014 / 20:41

1 answer

Method migrations entity framework Problem in extracting text using PDFReader API

score 1 · Accepted Answer

Yes. Assuming the image you are uploading is from the internet, you can do so:

Var
 imageURL: string;
 MS: TMemoryStream;
 Jpg: TJPEGImage;
begin
 imageURL := 'URL da imagem aqui';
 try
   MS := TMemoryStream.Create;
   IdHTTP1.Get(imageURL, MS);
   if ms.Size > 0 then begin
     Jpg := TJPEGImage.Create;
     MS.Position := 0;
     try
       Jpg.LoadFromStream(MS);
       Image1.Picture.Assign(Jpg);
     finally
       Jpg.Free;
     end;
   end;
 finally
   MS.Free;
 end;

In event OnProgress() of component TImage do so:

procedure TForm1.Image1Progress(Sender: TObject; Stage: TProgressStage;
  PercentDone: Byte; RedrawNow: Boolean; const R: TRect; const Msg: string);
begin
if PercentDone = 100 then
   Label1.Caption := 'imagem carregada!';
end;