使用WinForm 打印 Devexpress BarCodeControl 二维码
/// <summary> /// Handles the ItemClick event of the barButtonItem2 control. /// </summary> /// <param>The source of the event.</param> /// <param>The <see cref="DevExpress.XtraBars.ItemClickEventArgs"/> instance containing the event data.</param> private void barButtonItem2_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) { printDialog1.Document = printDocument1; printPreviewControl1.Document = printDocument1; printDocument1.PrintPage += PrintDocument1_PrintPage; if (printDialog1.ShowDialog() == DialogResult.OK) { printDocument1.Print(); } } /// <summary> /// Prints to graphics. /// </summary> /// <param>The graphics.</param> /// <param>The bounds.</param> public void PrintToGraphics(Graphics graphics, Rectangle bounds) { Bitmap bitmap = new Bitmap(barCodeControl1.Width, barCodeControl1.Height); barCodeControl1.DrawToBitmap(bitmap, new Rectangle(0, 0, bitmap.Width, bitmap.Height)); Rectangle target = new Rectangle(0, 0, bounds.Width, bounds.Height); double xScale = (double)bitmap.Width / bounds.Width; double yScale = (double)bitmap.Height / bounds.Height; if (xScale < yScale) target.Width = (int)(xScale * target.Width / yScale); else target.Height = (int)(yScale * target.Height / xScale); graphics.PageUnit = GraphicsUnit.Display; graphics.DrawImage(bitmap, target); } /// <summary> /// Handles the PrintPage event of the PrintDocument1 control. /// </summary> /// <param>The source of the event.</param> /// <param>The <see cref="System.Drawing.Printing.PrintPageEventArgs"/> instance containing the event data.</param> private void PrintDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e) { PrintToGraphics(e.Graphics, e.MarginBounds); }
WinForm 调用 PrintDocument
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