delphi-11-alexandria - TEdgeBrowser.CapturePreview 流式传输

Question

I'm using Delphi 11 and I'm trying to get the EdgeBrowser.CapturePreview to save to 
stream and use later.

In the first example, the file saves correctly. From what I can see the .CapturePreview will save to a file or a stream. But, CapturePreview does not appear to Capture to a stream. Any suggestions?


uses Vcl.Edge;

procedure TFormMain.MenuSaveScreenShotClick(Sender: TObject);
 begin
  //This sample works well and saves a file.
  if SaveDialog1.Execute then EdgeBrowser1.CapturePreview(SaveDialog1.FileName);
 end;

procedure TFormMain.MenuSaveScreenShotClick(Sender: TObject);
 var
   ms:TMemoryStream;
begin
  // Save to Stream...
  ms:=TMemoryStream.Create();
 if dlgSaveScreenshot.Execute then
  EdgeBrowser.CapturePreview(ms);
  ms.Position:=0;
  ms.SaveToFile('test.png');
end;

Answer 1

将您的流保存在事件 CapturePreviewCompleted 上。