winping.cpp

VC各工程的源码集合

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

#include "stdafx.h"
#include "WinPing.h"
#include "WinPingDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CWinPingApp

BEGIN_MESSAGE_MAP(CWinPingApp, CWinApp)
	//{{AFX_MSG_MAP(CWinPingApp)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG
	ON_COMMAND(ID_HELP, CWinApp::OnHelp)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWinPingApp construction

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

/////////////////////////////////////////////////////////////////////////////
// The one and only CWinPingApp object

CWinPingApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CWinPingApp initialization

BOOL CWinPingApp::InitInstance()
{
/*	HANDLE CreateSemaphore(
  LPSECURITY_ATTRIBUTES lpSemaphoreAttributes,
                       // pointer to security attributes
  LONG lInitialCount,  // initial count
  LONG lMaximumCount,  // maximum count
  LPCTSTR lpName       // pointer to semaphore-object name
);*/

	HANDLE hSem=CreateSemaphore(NULL,1,1,"WinPing");
	if(hSem)
	{
		if(ERROR_ALREADY_EXISTS==GetLastError())
		{
			CloseHandle(hSem);
			HWND hPrev=GetWindow(GetDesktopWindow(),GW_CHILD);
			while(IsWindow(hPrev))
			{
				if(GetProp(hPrev,"WinPing"))
				{
					if(IsIconic(hPrev))
						ShowWindow(hPrev,SW_RESTORE);
					SetForegroundWindow(hPrev);
					return FALSE;
				}
				hPrev=GetWindow(hPrev,GW_HWNDNEXT);
			}
			AfxMessageBox("已经有一个程序在运行，但找不到它的主窗口",MB_OK | MB_ICONEXCLAMATION);
			return FALSE;
		}
		
	}
	else
	{
		AfxMessageBox("建立信标对象失败",MB_OK | MB_ICONEXCLAMATION | MB_ICONQUESTION);
		return FALSE;
	}

	if (!AfxSocketInit())
	{
		AfxMessageBox(IDP_SOCKETS_INIT_FAILED);
		return FALSE;
	}

	AfxEnableControlContainer();

	SetRegistryKey("WinPing");

	// 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

	CWinPingDlg dlg;
	m_pMainWnd = &dlg;
	
	int nResponse = dlg.DoModal();

	if (nResponse == IDOK)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}
	else if (nResponse == IDCANCEL)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}

	// Since the dialog has been closed, return FALSE so that we exit the
	//  application, rather than start the application's message pump.
	return FALSE;
}