C++实现打印页面添加MICR行技术求助

Let's walk through correcting your code to meet the MICR formatting requirements, then note key considerations for your future C# PDF rewrite.

1. Correct MICR String Construction #

Your current code hardcodes the transit number and misses the required MICR symbols. Here's the updated version that aligns with your specifications:

// 创建MICR字符串
string stmtTransCode = FindTransCode(vStrPage);
stmt->SetStmtTransCode(stmtTransCode);
MBStatement* mbStmt = dynamic_cast<MBStatement*>(stmt);
mbStmt->m_strMICR = "";

if (!stmtTransCode.empty()) {
    // 替换为你实际获取transit号码的方法（比如GetTransitNum()）
    string transitNum = stmt->GetTransitNum(); 
    string accountNum = stmt->GetAccNum();

    // 用IDAutomation转账号码符号（|: 和 :|）包裹transit号码
    mbStmt->m_strMICR += "|:" + transitNum + ":|";
    // 添加account号码及ON-US符号（||'）
    mbStmt->m_strMICR += " " + accountNum + "||'";
    // 添加trans code
    mbStmt->m_strMICR += " " + stmtTransCode;
}

Key Fixes: #

• Replaced the hardcoded transit number with dynamic retrieval (update GetTransitNum() to match your actual method name)
• Wrapped the transit number in the required IDAutomation transit symbols |: ... :|
• Added the ON-US symbol ||' immediately after the account number
• Used a single dynamic_cast to clean up repeated casting logic

2. Update the MICR Printing Method #

Your current code uses an OCRA font (for OCR recognition), but MICR lines require a dedicated MICR font (like IDAutomation's MICR E-13B) to be readable by check processing equipment. Also, fix the return value to properly indicate success:

BOOL MBStmtWriter::WriteMICRLine(string m_MICRLine) {
    if (m_MICRLine.empty()) {
        return FALSE; // 空MICR行不打印
    }

    // 替换为你的MICR专用字体名称（确保打印机已安装该字体）
    string micrFontCmd = m_printer.getFont("IDAutomationMICRFont"); 
    string positionCmd = m_printer.getXYPosCMD(2000, 3225);

    // 发送字体设置、位置定位和MICR字符串到打印机
    m_printer.WriteCMD(micrFontCmd + positionCmd);
    m_printer.WriteCMD(m_MICRLine);

    return TRUE; // 成功打印返回TRUE
}

Critical Checks: #

• Confirm your printer has the IDAutomation MICR font installed (either as a resident font or soft font loaded at runtime)
• Verify the XY coordinates (2000, 3225) place the MICR line in the standard bottom position of the page (adjust if needed)

3. Notes for Future C# PDF Rewrite (JDF Control) #

When migrating to C# and PDF output with JDF:

• Use a PDF library that supports embedding custom MICR fonts (like iTextSharp or PdfSharp)
• Ensure the MICR line is placed in the industry-standard position (typically the bottom 0.5–1 inch of the page)
• JDF will handle job instructions like paper tray selection, but you’ll need to map MICR font embedding and positioning logic to your PDF generation workflow

内容的提问来源于stack exchange，提问作者lsieting