printhellodlg.cpp

来自「Visual_C++[1].NET_Bible1 Visual_C++宝典书中」· C++ 代码 · 共 237 行

// PrintHelloDlg.cpp : implementation file
//

#include "stdafx.h"
#include "PrintHello.h"
#include "PrintHelloDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
	DECLARE_MESSAGE_MAP()
public:
  afx_msg void OnBnClickedOk();
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
  ON_BN_CLICKED(IDOK, OnBnClickedOk)
END_MESSAGE_MAP()


// CPrintHelloDlg dialog



CPrintHelloDlg::CPrintHelloDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CPrintHelloDlg::IDD, pParent)
  , m_strPrinterName(_T(""))
  , m_strDocumentName(_T(""))
  , m_strText(_T(""))
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CPrintHelloDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
  DDX_Text(pDX, IDC_EDIT2, m_strPrinterName);
  DDX_Text(pDX, IDC_EDIT3, m_strDocumentName);
  DDX_Text(pDX, IDC_EDIT1, m_strText);
}

BEGIN_MESSAGE_MAP(CPrintHelloDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
  ON_BN_CLICKED(IDC_BUTTON1, OnBnClickedButton1)
  ON_BN_CLICKED(IDOK, OnBnClickedOk)
END_MESSAGE_MAP()


// CPrintHelloDlg message handlers

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

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 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
}

void CPrintHelloDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

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

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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 function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CPrintHelloDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CPrintHelloDlg::OnBnClickedButton1()
{
  CAboutDlg().DoModal();
}

void CAboutDlg::OnBnClickedOk()
{
  CWaitCursor wait;

  CString strUrl = "http://www.thecodechannel.com/redirect.asp?u=/&s=vcnb";
  if (32 >= (int)ShellExecute(NULL, "open", strUrl, NULL, NULL, SW_SHOWNORMAL))
  {
    AfxMessageBox("::ShellExecute failed to open this link!");
  }
}

void CPrintHelloDlg::OnBnClickedOk()
{
 if (UpdateData(TRUE))
 {
  HDC hDC;
  DOCINFO di;

  // Create a device context for the printer.
  hDC = ::CreateDC("WINSPOOL", 
                   m_strPrinterName, 
                   NULL, 
                   NULL);

  if (hDC)
  {
   // Set up DOCINFO structure.
   ZeroMemory(&di, sizeof(DOCINFO));
   di.cbSize = sizeof(DOCINFO);
   di.lpszDocName = m_strDocumentName;

   // Start the printing.
   if (SP_ERROR != ::StartDoc(hDC,&di))
   {
    // Signal a new page.
    ::StartPage(hDC);
   
    // Print text to print DC just as you
    // would to a display DC.
    ::TextOut(hDC, 
              10, 10, 
              m_strText, 
              m_strText.GetLength());
   
    if (IDYES == AfxMessageBox("Abort Y/N", MB_YESNO))
      ::AbortDoc(hDC);

    // Signal end of page.
    ::EndPage(hDC);

    // End printing.
    ::EndDoc(hDC);
   }
   else
   {
    AfxMessageBox("Could not start the printing "
                  "process (::StartDoc).");
   }

   // Delete the DC.
   ::DeleteDC(hDC);
  }
  else
  {
   AfxMessageBox("Could not acquire a printer dc. "
                 "Do you have a printer installed? "
                 "If so, check the name and make sure "
                 "you entered it correctly.");
  }
 }
}