// 學(xué)生管理系統(tǒng).cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "學(xué)生管理系統(tǒng).h"

#include "MainFrm.h"
#include "學(xué)生管理系統(tǒng)Doc.h"
#include "學(xué)生管理系統(tǒng)View.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyApp

BEGIN_MESSAGE_MAP(CMyApp, CWinApp)
//{{AFX_MSG_MAP(CMyApp)
ON_COMMAND(ID_APP_ABOUT, OnAppAbout)
// NOTE - the ClassWizard will add and remove mapping macros here.
//    DO NOT EDIT what you see in these blocks of generated code!
//}}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()

/////////////////////////////////////////////////////////////////////////////
// CMyApp construction

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

/////////////////////////////////////////////////////////////////////////////
// The one and only CMyApp object

CMyApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CMyApp initialization

BOOL CMyApp::InitInstance()
{
	//創(chuàng)建信標(biāo)對(duì)象
	HANDLE hsem=CreateSemaphore(NULL,1,1,"學(xué)生綜合管理系統(tǒng)");
	if(hsem)
	{
		//如果信標(biāo)對(duì)象存在,則程序中已有一個(gè)實(shí)例運(yùn)行
		if(ERROR_ALREADY_EXISTS==GetLastError())
		{
			CloseHandle(hsem);//關(guān)閉信標(biāo)對(duì)象
			//獲取桌面窗口的一個(gè)子窗口
			HWND hWndprev=::GetWindow(::GetDesktopWindow(),GW_CHILD);
			while(::IsWindow(hWndprev))//判斷給定窗口句柄是否是存在的窗口
			{
				//判斷窗口是否有我們預(yù)先設(shè)置的標(biāo)記,若有則是我們尋找的窗口,若沒有則不是
				if(::GetProp(hWndprev,"學(xué)生綜合管理系統(tǒng)"))
				{
					//若主窗口已經(jīng)最小化了,則恢復(fù)它的大小
					if(::IsIconic(hWndprev))					
						::ShowWindow(hWndprev,SW_RESTORE);
					//將應(yīng)用程序的主窗口激活
					::SetForegroundWindow(hWndprev);
					return FALSE;					
				}
				//繼續(xù)尋找下一個(gè)窗口
				hWndprev=::GetWindow(hWndprev,GW_HWNDNEXT);				
			}
			AfxMessageBox("已經(jīng)有一個(gè)實(shí)例運(yùn)行,但找不到它的主窗口!");
		}		
	}
	else
	{
		AfxMessageBox("創(chuàng)建信標(biāo)對(duì)象失敗,程序退出!");
		return FALSE;
	}
	AfxEnableControlContainer();
	//AfxMessageBox("");
	// 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(CMyDoc),
		RUNTIME_CLASS(CMainFrame),       // main SDI frame window
		RUNTIME_CLASS(CMyView));
	AddDocTemplate(pDocTemplate);
	
	//因?yàn)樵O(shè)計(jì)的doc/view只是作為打印預(yù)覽,并不顯示,所以刪除以下幾行
	
	
	// 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();
	
	
	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 CMyApp::OnAppAbout()
{
	CAboutDlg aboutDlg;
	aboutDlg.DoModal();
}

/////////////////////////////////////////////////////////////////////////////
// CMyApp message handlers


int CMyApp::ExitInstance() 
{
	// TODO: Add your specialized code here and/or call the base class
	
	return CWinApp::ExitInstance();
}