接下来就是在打印纸上输出。文本与图形使用GDI函数提交给打印机。如果dc指的是屏幕DC，就会在屏幕上进行处理。如果是打印机的话，就会在打印机上处理。

代码实现：

以上只是稍微的介绍下，具体的请自己查资料。

新建一个对话框工程，添加按钮控件，在对话框类的头文件中，定义变量：

CString str[7];
	int 	screenx,screeny;							//窗口每英寸像素数
	int 	printx,printy;								//打印机每英寸像素数
	double 	ratex,ratey;								//打印机与屏幕的像素比率
	CFont	font;

void CPrintTextDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
	CDC* pDC = GetDC();
	screenx = pDC->GetDeviceCaps(LOGPIXELSX);
	screeny = pDC->GetDeviceCaps(LOGPIXELSY);
	DrawText(pDC,FALSE);
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CPrintTextDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CPrintTextDlg::OnButprint() 
{
	// TODO: Add your control notification handler code here
	DWORD dwflags = PD_PAGENUMS|PD_HIDEPRINTTOFILE|PD_SELECTION|PD_RETURNDEFAULT;	//设置打印对话框风格
	CPrintDialog dlg(false,dwflags,NULL);									//创建打印对话框
	if (dlg.DoModal() == IDOK)												//是否按钮"打印"按钮
	{
		CDC dc;														//声明设备上下文
		dc.Attach(dlg.GetPrinterDC());										//获取打印机DC
		int leftmargin;
		leftmargin = dc.GetDeviceCaps(PHYSICALOFFSETX);
		CRect m_rect(-leftmargin,0,dc.GetDeviceCaps(PHYSICALWIDTH)-leftmargin
			,dc.GetDeviceCaps(PHYSICALHEIGHT));		
		DrawText(&dc,TRUE);
	}
}

void CPrintTextDlg::DrawText(CDC *pDC, BOOL IsPrint)
{
	if (!IsPrint) 											//预览
	{
		ratex = ratey = 1; 									//当预览时设置比率为1
	}
	else 												//判断是打印
	{
		printx = pDC->GetDeviceCaps(LOGPIXELSX);
		printy = pDC->GetDeviceCaps(LOGPIXELSY);
		ratex = (double)(printx)/screenx;
		ratey = (double)(printy)/screeny;
		pDC->StartDoc("printtext");							//开始打印
	}
	font.CreatePointFont(120,"宋体",pDC);						//创建字体
	for (int i=0;i<7;i++)										//设置循环
	{
		
		pDC->SelectObject(&font);							//将字体选入设备上下文
		pDC->TextOut(int(100*ratex),int(50+i*30*ratey),str[i]);		//打印文本
	}
	if (IsPrint)											//判断是打印
	{
		pDC->EndDoc();									//结束打印
	}
	font.DeleteObject();										//释放字体
}

HBRUSH CPrintTextDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
	
	// TODO: Change any attributes of the DC here
	CBrush m_brush (RGB(255,255,0));
	CRect m_rect;
	GetClientRect(m_rect);
	pDC->SelectObject(&m_brush);
	pDC->FillRect(m_rect,&m_brush);
	return m_brush;
}