printdb.cpp

在游戏设计的时候

// PrintDB.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "PrintDB.h"

#include "MainFrm.h"
#include "PrintDBDoc.h"
#include "PrintDBView.h"

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

BEGIN_MESSAGE_MAP(CPrintDBApp, CWinApp)
	//{{AFX_MSG_MAP(CPrintDBApp)
	ON_COMMAND(ID_APP_ABOUT, OnAppAbout)
	ON_COMMAND(ID_GetDBPath, OnGetDBPath)
	//}}AFX_MSG_MAP
	// Standard file based document commands
	ON_COMMAND(ID_FILE_NEW, CWinApp::OnFileNew)
	ON_COMMAND(ID_FILE_OPEN, CWinApp::OnFileOpen)
	// Standard print setup command
	ON_COMMAND(ID_FILE_PRINT_SETUP, CWinApp::OnFilePrintSetup)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPrintDBApp construction

CPrintDBApp::CPrintDBApp()
{
	// TODO: add construction code here,
	// Place all significant initialization in InitInstance
}

/////////////////////////////////////////////////////////////////////////////
// The one and only CPrintDBApp object

CPrintDBApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CPrintDBApp initialization

BOOL CPrintDBApp::InitInstance()
{
	AfxEnableControlContainer();

	// Standard initialization
	// If you are not using these features and wish to reduce the size
	//  of your final executable, you should remove from the following
	//  the specific initialization routines you do not need.

#ifdef _AFXDLL
	Enable3dControls();			// Call this when using MFC in a shared DLL
#else
	Enable3dControlsStatic();	// Call this when linking to MFC statically
#endif

	

	// Change the registry key under which our settings are stored.
	// TODO: You should modify this string to be something appropriate
	// such as the name of your company or organization.
	SetRegistryKey(_T("Local AppWizard-Generated Applications"));

	LoadStdProfileSettings();  // Load standard INI file options (including MRU)

	// Register the application's document templates.  Document templates
	//  serve as the connection between documents, frame windows and views.

	CSingleDocTemplate* pDocTemplate;
	pDocTemplate = new CSingleDocTemplate(
		IDR_MAINFRAME,
		RUNTIME_CLASS(CPrintDBDoc),
		RUNTIME_CLASS(CMainFrame),       // main SDI frame window
		RUNTIME_CLASS(CPrintDBView));
	AddDocTemplate(pDocTemplate);

	// Parse command line for standard shell commands, DDE, file open
	CCommandLineInfo cmdInfo;
	ParseCommandLine(cmdInfo);

	// Dispatch commands specified on the command line
	if (!ProcessShellCommand(cmdInfo))
		return FALSE;

	// The one and only window has been initialized, so show and update it.
	m_pMainWnd->ShowWindow(SW_SHOW);
	m_pMainWnd->UpdateWindow();


	sPathName="";
	IsLinkDB=FALSE;

	return TRUE;
}


/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

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

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
		// No message handlers
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

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

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

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

// App command to run the dialog
void CPrintDBApp::OnAppAbout()
{
	CAboutDlg aboutDlg;
	aboutDlg.DoModal();
}

/////////////////////////////////////////////////////////////////////////////
// CPrintDBApp message handlers


int CPrintDBApp::ExitInstance() 
{
	// TODO: Add your specialized code here and/or call the base class
	// 关闭ADO连接状态
	if (IsLinkDB==TRUE)
	{
		if(m_pConnection->State)
			m_pConnection->Close();
		m_pConnection= NULL;
		
	}

	return CWinApp::ExitInstance();
}

void CPrintDBApp::OnGetDBPath() 
{
	// TODO: Add your command handler code here
	CFileDialog dlg(TRUE);
	if (dlg.DoModal()==IDOK)
	{
		sPathName=dlg.GetPathName();
		
		
		// ------------------------------------------------------------------------------------------------
		// 初始化COM,创建ADO连接等操作
		AfxOleInit();
		m_pConnection.CreateInstance(__uuidof(Connection));
		
		// 在ADO操作中建议语句中要常用try...catch()来捕获错误信息，
		// 因为它有时会经常出现一些想不到的错误。jingzhou xu
		try                 
		{	
			// 打开本地Access库Demo.mdb
			CString str;
			str.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=%s",sPathName);
			m_pConnection->Open((_bstr_t)str,"","",adModeUnknown);
			
			
		}
		catch(_com_error e)
		{
			AfxMessageBox("数据库连接失败，请确认路径是否正确!");
			return;
			
		} 
		// ---------------------------------------------------------------------------------
		
		IsLinkDB=TRUE;
		CMainFrame*pMain=(CMainFrame*)/*AfxGetApp()*/theApp.m_pMainWnd;
		//得到app指针可以用afxgetapp,也可以用得到app对象的方法
		CPrintDBView*pView=(CPrintDBView*)pMain->GetActiveView();
		pView->IsLinkTab();
	}
}