private void printQRCodeGenButton_Click(object sender, EventArgs e) { // TODO: Add your control notification handler code here long lResult; string strQRCodeLeft = "QRCode Test Left Alignment"; string strQRCodeCenter = "QRCode Test Center Alignment"; // string strQRCodeRight = "QRCode Test Right Alignment"; if (useprinterdriver) { m_strPrinter = pDriverNameTextBox.Text.ToString(); lResult = LKPrint.OpenPort(m_strPrinter, 1); if (lResult != 0) { MessageBox.Show("OpenPrinter Failed", "Error", MessageBoxButtons.OK); return; } } LKPrint.PrintStart(); LKPrint.PrintQRCodeGenerator(strQRCodeLeft, 0, 3, 0, 0, -1, LKPrint.LK_ALIGNMENT_LEFT); LKPrint.PrintQRCodeGenerator(strQRCodeCenter, 0, 3, 0, 0, -1, LKPrint.LK_ALIGNMENT_CENTER); LKPrint.PrintQRCodeGenerator("QRCode Test Right Alignment", 0, 3, 0, 0, -1, LKPrint.LK_ALIGNMENT_RIGHT); LKPrint.PrintQRCodeGenerator("SEWOO TECH CO.,LTD%0D%0AR & D Department / Senior Engineer%0D%0AJimmy Oh", 0, 3, 0, 0, -1, LKPrint.LK_ALIGNMENT_CENTER); LKPrint.PrintBarCode("1234567890", 109, 40, 512, 1, 2); // POSPrinter LKPrint.PrintNormal("\x1b|fP"); LKPrint.PrintStop(); if (useprinterdriver) { lResult = LKPrint.ClosePort(); if (lResult != 0) { MessageBox.Show("ClosePrinter Failed!!!", "Error", MessageBoxButtons.OK); } } }