printdlg.cpp

C++编程实践与技巧一书各章节的源码

// printDlg.cpp : implementation file
//

#include "stdafx.h"
#include "print.h"
#include "printDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CPrintDlg dialog

CPrintDlg::CPrintDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CPrintDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CPrintDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CPrintDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CPrintDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CPrintDlg, CDialog)
	//{{AFX_MSG_MAP(CPrintDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_PRINT, OnPrint)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPrintDlg message handlers

BOOL CPrintDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CPrintDlg::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();
	}
}

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

void CPrintDlg::OnPrint() 
{
char szprinter[80];
char *szDevice,*szDriver,*szOutput;
CDC dc; // 定义一个设备环境句柄
//定义一个打印作业
static DOCINFO DocIn={sizeof(DOCINFO),"打印演示",NULL,NULL}; 
//得到设备字符串存入数组szprinter中
CPrintDialog printDlg(FALSE);
if (printDlg.DoModal() == IDCANCEL)         // Get printer settings from user
        return;
dc.Attach(printDlg.GetPrinterDC());         // Attach a printer DC
dc.m_bPrinting = TRUE;

// 创建一个打印机设备句柄 
{
if(StartDoc(dc,&DocIn)>0) //开始执行一个打印作业
{ 
StartPage(dc); //打印机走纸,开始打印
SaveDC(dc); //保存打印机设备句柄
// 输出一行文字
TextOut(dc,1,1,"这是一个例子",12); 
// 输出一条直线
RestoreDC(dc,-1); //恢复打印机设备句柄
EndPage(dc); //打印机停纸,停止打印
EndDoc(dc); //结束一个打印作业
MessageBox("打印完毕!","提示",MB_ICONINFORMATION);
}
// 用API函数DeleteDC销毁一个打印机设备句柄 
DeleteDC(dc);
}
}