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上传时间: 2011-05-11
详细说明： 一般的日志工具。方便一些日志记录观察. //////////////////////////////////////////////////////////////// // TraceWin Copyright 1995-1999 Paul DiLascia // If this program works, it was written by Paul DiLascia. // If not, I don't know who wrote it. // // NOTE: If you're using PixieLib, you don't need to include this file. // It's already included by the library. // // *************************************************************************** // TraceWin is a tool that displays MFC diagnostic (afxDump, TRACE) output // in the window of the TraceWi n applet. // // To use TraceWin, you must #include this file somewhere in your main program // file (typically where you implement your CWinApp). Since this file contains // code, you should #include it in only once--i.e. NOT in StdAfx.h--or you'll // get multiply-defined symbol errors in the linker. This file contains an // auto-initializing static variable that works in most cases; but you may miss // some TRACE output from constructors of static objects. If so, you can // manually call PxlTraceInit before your first TRACE call. // // To see the output, you also need the TraceWin applet, TraceWin.exe, which // you can download http://pobox.com/~dilascia // // *************************************************************************** // #ifdef _DEBUG // Window class name used by the main window of the TRACEWIN applet. #define TRACEWND_CLASSNAME _T("TraceWin TRACE Window") #define OLDTRACEWND_CLASSNAME _T("MfxTraceWindow") // backwards compat // ID sent as COPYDATASRUCT::dwData to identify the WM_COPYDATA message // as coming from an app using TraceWin. #define ID_COPYDATA_TRACEMSG MAKELONG(MAKEWORD('t','w'),MAKEWORD('i','n')) ////////////////// // CFileTrace is a CFile that "writes" to the trace window // class CFileTrace : public CFile { DECLARE_DYNAMIC(CFileTrace) CFileTrace() { m_strFileName = _T("Mfx File Tracer"); } static BOOL autoInit; virtual void Write(const void* lpBuf, UINT nCount); public: static BOOL Init(); }; IMPLEMENT_DYNAMIC(CFileTrace, CFile) ////////////////// // Override to write to TraceWin applet instead of file. // void CFileTrace::Write(const void* lpBuf, UINT nCount) { if (!afxTraceEnabled) return; // MFC tracing not enabled HWND hTraceWnd = ::FindWindow(TRACEWND_CLASSNAME, NULL); if (hTraceWnd==NULL) hTraceWnd = ::FindWindow(OLDTRACEWND_CLASSNAME, NULL); if (hTraceWnd) { // Found Trace window: send string with WM_COPYDATA // Must copy to make me the owner of the string; otherwise // barfs when called from MFC with traceMultiApp on // static char mybuf[1024]; #ifdef _UNICODE BOOL bDefCharUsed; ::WideCharToMultiByte(CP_ACP,0,LPCWSTR(lpBuf), -1, mybuf, 1024, NULL, &bDefCharUsed); #else memcpy(mybuf, lpBuf, nCount); #endif COPYDATASTRUCT cds; cds.dwData = ID_COPYDATA_TRACEMSG; cds.cbData = nCount; cds.lpData = mybuf; CWinApp* pApp = AfxGetApp(); HWND hWnd = pApp ? pApp->m_pMainWnd->GetSafeHwnd() : NULL; ::SendMessage(hTraceWnd, WM_COPYDATA, (WPARAM)hWnd, (LPARAM)&cds); } // Also do normal debug thing ::OutputDebugString((LPCTSTR)lpBuf); } ///////////////// // Initialize tracing. Replace global afxDump.m_pFile with CFileTrace object. // In VC 5.0, you shouldn't need to call this, since it's called from an // auto-initializing static object autoInit below. But if you don't see // any TRACE output in the TraceWin window, you should try calling // PxlTraceInit any time before your first TRACE message. // BOOL CFileTrace::Init() { if (afxDump.m_pFile==NULL) { // Initialize tracing: replace afxDump.m_pFile w/my own CFile object // // It's important to allocate with "new" here, not a static object, // because CFileTrace is virtual--i.e., called through a pointer in // the object's vtbl--and the compiler will zero out the virtual // function table with a NOP function when a static object // goes out of scope. But I want my CFileTrace to stay around to // display memory leak diagnostics even after all static objects // have been destructed. So I allocate the object with new and // never delete it. I don't want this allocation to itself generate // a reported memory leak, so I turn off memory tracking before I // allocate, then on again after. // BOOL bEnable = AfxEnableMemoryTracking(FALSE); afxDump.m_pFile = new CFileTrace; AfxEnableMemoryTracking(bEnable); return TRUE; } return FALSE; } ////////////////// // This object does nothing but call CFileTrace::Init, so all you have to // do is #include this file. Because afxDump is defined in a module with // // #pragma init_seg(lib) // // afxDump gets initialized before the "user" segment which is where your // app (and autoInit) is by default. If you need to use init_seg(lib), // or you have other objects whose constructors call TRACE that get // initialized before CFileTrace::bInitialized, you will have to call // CFileTrace::Init yourself, before your first TRACE statement. // BOOL CFileTrace::autoInit = CFileTrace::Init(); // This symbol defined so you can call it and have it // compile to nothing in non-debug build #define PxlTraceInit() CFileTrace::Init(); #else #define PxlTraceInit() #endif // _DEBUG ...展开收缩
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