在vc裡調試記憶體泄露

#define _CRTDBG_MAP_ALLOC
#include<stdlib.h>
#include <crtdbg.h>
#define SET_CRT_DEBUG_FIELD(a)     \
_CrtSetDbgFlag((a) | _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG))
#define CLEAR_CRT_DEBUG_FIELD(a)   \
_CrtSetDbgFlag(~(a) & _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG))
/* Report the memory leakage both on stderr and debug window */
#define MemoryDebug() \
do{ \
_CrtSetReportMode( _CRT_WARN,  _CRTDBG_MODE_FILE|_CRTDBG_MODE_DEBUG ); \
_CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR ); \
_CrtSetReportMode( _CRT_ERROR,  _CRTDBG_MODE_WNDW ); \
_CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_WNDW ); \
SET_CRT_DEBUG_FIELD( _CRTDBG_LEAK_CHECK_DF | _CRTDBG_DELAY_FREE_MEM_DF);
\
} while(0)