Question

我使用包含QR码的图像打印XPS文档。图像创建示例：

 Image image = CreatePresentation(qrCode);
 image.Height = 200;
 image.Width = 200;
 image.HorizontalAlignment = HorizontalAlignment.Center;
 image.VerticalAlignment = VerticalAlignment.Center;
 image.Stretch = Stretch.None;

其中

 public static Image CreatePresentation(System.Drawing.Image source)
    {
        Stream stream = new MemoryStream();
        source.Save(stream, ImageFormat.Png);
        Image image = new Image();

        BitmapImage src = new BitmapImage();
        src.BeginInit();
        src.StreamSource = stream;
        src.EndInit();

        image.Source = src;
        return image;
    }

当我有显示器dpi = 96时，打印页面上的图像尺寸（打印后在纸上）比我有montor dpi = 120时更大。如何在不同的dpi上打印相同尺寸的图像？

Answer 1

当我更换

 image.Stretch = Stretch.None;

在

 image.Stretch = Stretch.Fill;

图片开始打印正确

使用图像打印XPS文档。设置不同的dpi时，图像大小不同

1 个答案: