关于用代码输出内容到条码打印机，打1张，走6张纸的问题

[wmajia]

因近期要在产品贴一个二维码以及流水号，每个产品码值不一样，因此公司 写了个简单的打印程序。

打印的内容和显示，没有问题，但条码打印机走纸大大的浪费，每打1张，都会先走5张空的出来！！第6张上面才是真正的打印内容。 浪费条码纸和色带！

为了简单代码，我把打印二维码的代码去掉，跟打印机相关的代码如下，请帮忙看看问题出在哪，多谢！是不是要通过代码设置打印纸张的大小？

void Print()
{
    //获取打印的X Y
    this->UpdateData();
	dwStartX = atoi(m_strPointX);
	dwStartY = atoi(m_strPointY);

	 //获取打印机
	CString strPrintDevice = "";
	this->GetDlgItem(IDC_COMBO1)->GetWindowText(strPrintDevice);
	if (strPrintDevice.IsEmpty()){
		AfxMessageBox(_T("打印失败"));
		return;
	}

	DWORD dwFlag = PD_ALLPAGES | PD_NOPAGENUMS | PD_USEDEVMODECOPIES | PD_HIDEPRINTTOFILE;
	CPrintDialog pPrintdlg(FALSE, dwFlag, this);

	HGLOBAL hDevMode = NULL;
	HGLOBAL hDevNames = NULL;
	if (GetPrinterDevice(strPrintDevice.GetBuffer(0), &hDevNames, &hDevMode)) {
		AfxGetApp()->SelectPrinter(hDevNames, hDevMode);
	}
	else {
		AfxMessageBox(_T("Failed to select custom printer"));
	}

	strPrintDevice.ReleaseBuffer();
	pPrintdlg.m_pd.hDevMode = hDevMode;
	pPrintdlg.m_pd.hDevNames = hDevNames;

	CDC dc;
	BOOL InvalidatePrint = dc.Attach(pPrintdlg.CreatePrinterDC());
	DOCINFO di;
	di.cbSize = sizeof(DOCINFO);
	di.lpszDocName = _T("TAPCQRCODE");
	di.lpszDatatype = NULL;
	di.lpszOutput = NULL;
	di.fwType = 0;

	if (dc.StartDoc(&di)==-1)	{
		dc.EndDoc();
		AfxMessageBox(_T("打印错误"));
		return;
	}

	dc.StartPage();
	dc.SetMapMode(MM_TEXT);
	CRect recPrint(0, 0, dc.GetDeviceCaps(LOGPIXELSX), dc.GetDeviceCaps(LOGPIXELSY));
	dc.DPtoLP(&recPrint);
	dc.SetWindowOrg(0, 0);

    //打印字体
	CFont newFont;
	VERIFY(newFont.CreatePointFont(dwFontSize, _T("黑体"), &dc));
	CFont* oldFont = dc.SelectObject(&newFont);
	dc.SetTextAlign(TA_TOP|TA_LEFT);

	SetTextColor(dc,RGB(0,0,0));
	CString strIMEI;
	strIMEI.Format("IMEI:%s", m_strIMEI.Mid(0, IMEI_LENTH));

	CRect rc;
	rc.left  = dwStartX+ dwQrCodeWidth + dwGapQRCodeString;
	rc.top   = dwStartY;
	rc.right = rc.left+dwTextWidth;
	rc.bottom= rc.top+ dwQrCodeWidth;

	//打印流水号1
	CString strPrint;
	strPrint.Format("%s\n%s",m_strType, m_strName);
	dc.DrawText(strPrint,rc,DT_VCENTER|DT_LEFT);

	CFont newFontIMEI;
	VERIFY(newFontIMEI.CreatePointFont(58, _T("黑体"), &dc));
	dc.SelectObject(&newFontIMEI);

	rc.left  = dwStartX+ dwQrCodeWidth + dwGapQRCodeString;
	rc.top   = dwStartY+dwIMEIOffset;
	rc.right = rc.left+dwTextWidth;
	rc.bottom= rc.top+ dwQrCodeWidth+dwIMEIOffset;

	//打印流水号 2
	strPrint.Format("%s\n%s",strIMEI,m_strSN);
	dc.DrawText(strPrint,rc,DT_VCENTER|DT_LEFT);

	dc.SelectObject(oldFont);
	newFont.DeleteObject();
	newFontIMEI.DeleteObject();

	dc.EndPage();
	dc.EndDoc();
	DeleteDC(dc.Detach());
}

[wmajia]

顶一下！

[wmajia]

已解决，其中 dev->dmOrientation 是设置纸张水平还是垂直的。

DWORD dwFlag=PD_ALLPAGES | PD_NOPAGENUMS | PD_USEDEVMODECOPIES | PD_SELECTION | PD_HIDEPRINTTOFILE | PD_RETURNDEFAULT;	
	CPrintDialog dlg(FALSE,dwFlag,NULL);
	if (dlg.DoModal() == IDOK)
	{
		//定义打印纸的大小
		LPDEVMODE dev      = dlg.GetDevMode();
		dev->dmPaperSize   = DMPAPER_USER;
		dev->dmPaperLength = 200 * 10;				//打印纸长度
		dev->dmPaperWidth  = 100 * 10;				//打印纸宽度
		dev->dmOrientation = DMORIENT_LANDSCAPE;
		dev->dmFields = DM_PAPERSIZE | DM_PAPERWIDTH | DM_PAPERLENGTH | dev->dmFields;

		CDC dc;
		dc.Attach(dlg.GetPrinterDC());						//获得打印机设备上下文
		dc.ResetDC(dev);		
		CFont TextFont;
		TextFont.CreatePointFont(150,"宋体",&dc);			//设置字体
		dc.StartDoc("print");								//开始打印
		dc.SelectObject(&TextFont);						//选入字体
		dc.TextOut(200,200,"山无棱，江水为竭，冬雷震震，夏雨雪，天地合，乃敢与君绝！");
		dc.EndDoc();									//结束打印
		TextFont.DeleteObject();
		dc.DeleteDC();
	}