winform打印问题.打印一图片,预览图片总是在左上角.如何调整居中.及其大小?

Question

winform打印问题.打印一图片,预览图片总是在左上角.如何调整居中.及其大小?

Answer 1

Winfrom 自带控制还是三方控件?

Answer 2

   private void button2_Click(object sender, EventArgs e)
        {
            PrintDocument _Docunment = new PrintDocument();
            _Docunment.PrintPage += new PrintPageEventHandler(_Docunment_PrintPage);            PrintPreviewDialog _Dilaog = new PrintPreviewDialog();
            _Dilaog.Document = _Docunment;
            _Dilaog.ShowDialog();
        }        void _Docunment_PrintPage(object sender, PrintPageEventArgs e)
        {
            Image _PrintImage =this.Icon.ToBitmap();
            int _X = (e.PageBounds.Width- _PrintImage.Width) / 2;
            int _Y = (e.PageBounds.Height - _PrintImage.Height) / 2;            e.Graphics.DrawImage(_PrintImage, _X, _Y, _PrintImage.Width, _PrintImage.Height);        }

Answer 3

如果根据比例调整大小 可以偷懒使用PictureBox  void _Docunment_PrintPage(object sender, PrintPageEventArgs e)
        {
            Image _PrintImage =this.Icon.ToBitmap();            PictureBox _PictureBox = new PictureBox();
            _PictureBox.BackColor = Color.White;
            _PictureBox.Size = e.PageBounds.Size;
            _PictureBox.SizeMode = PictureBoxSizeMode.Zoom;
            _PictureBox.Image = _PrintImage;
            Bitmap _Bitmap = new Bitmap(e.PageBounds.Width, e.PageBounds.Height);
            _PictureBox.DrawToBitmap(_Bitmap, new Rectangle(0, 0, _Bitmap.Width, _Bitmap.Height));
            
            e.Graphics.DrawImage(_Bitmap,0,0,_Bitmap.Width,_Bitmap.Height);
        }