Delphi中把bmp图片转换成jpg图片

//bmp图片转换成jpg图片
function fun_BmpToJpg(temp, path: String; ACQ: Integer): Boolean; stdcall;
var
  MyJpeg: TJpegImage;
  Bmp: TBitmap;
begin
  result := false; 
  if FileExists(temp) then
  begin
    Bmp:= TBitmap.Create;
    MyJpeg:= TJpegImage.Create;
    Bmp.LoadFromFile(temp);
    MyJpeg.Assign(Bmp);
    MyJpeg.CompressionQuality := ACQ;
    MyJpeg.Compress;
    MyJpeg.SaveToFile(Path);
    MyJpeg.free;
    Bmp.free;
    if FileExists(path) then
      result := True;
  end;
end;
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