commdef.h

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#ifndef __COMMON_DEFINE_HEADER__
#define __COMMON_DEFINE_HEADER__

#ifndef NULL
#define NULL 0
#endif

#ifndef TRUE
#define TRUE 1
#endif 

#ifndef FALSE
#define FALSE 0
#endif 

#ifndef INT_MAX
#define INT_MAX 2147483647  
#endif

#ifndef M_PI
#define M_PI       3.14159265358979323846
#endif

#ifndef max
#define max(a,b)            (((a) > (b)) ? (a) : (b))
#endif

#ifndef min
#define min(a,b)            (((a) < (b)) ? (a) : (b))
#endif

#ifndef Get3Min
#define Get3Min(x1,x2,x3)	(((x1)<(x2)?(x1):(x2))<(x3)?((x1)<(x2)?(x1):(x2)):(x3))
#endif

#ifndef Get3Max
#define Get3Max(x1,x2,x3)	(((x1)>(x2)?(x1):(x2))>(x3)?((x1)>(x2)?(x1):(x2)):(x3))
#endif

#ifndef between
#define between(x, a, b)	((((x)>=(a))&&((x)<=(b)))||(((x)>=(b))&&((x)<=(a))))
#endif

#ifndef ALIGN4
#define ALIGN4(x)			((((DWORD)x)+3) & (0xFFFFFFFC))
#endif

#ifndef ALIGN8
#define ALIGN8(x)			((((DWORD)x)+7) & (0xFFFFFFF8))
#endif

#ifndef LIMITTOMAX
#define LIMITTOMAX(x, maxvalue)		((x) > (maxvalue) ? (maxvalue) : (x))
#endif

#ifndef LIMITTOBOUND
#define LIMITTOBOUND(x, l, h)	\
{								\
	if ((x) < (l))				\
	{							\
		(x)=(l);				\
	}							\
	else if ((x) > (h))			\
	{							\
		(x)=(h);				\
	} 							\
}
#endif

#ifndef INTERVAL
#define INTERVAL(a, b)			((a) < (b) ? ((b)-(a)) : ((a)-(b)))
#endif

#ifndef INTERSECT
#define INTERSECT(x1, y1, x2, y2)   ((((y2)>(x1))&&((x2)<(y1))) ? (min((y1), (y2))-max((x1), (x2))) : 0)
#endif

#ifndef ENLARGETOTIMES
#define ENLARGETOTIMES(x, y)	(((x) % (y) == 0) ? (x) : ((x) + (y) - (x) % (y)))
#endif

#ifndef TRUNCTOTIMES
#define TRUNCTOTIMES(v, x)		(((v) / (x)) * (x))
#endif

#ifndef RECTWIDTH
#define RECTWIDTH(rc)			(((rc).right)-((rc).left))
#endif

#ifndef RECTHEIGHT
#define RECTHEIGHT(rc)			(((rc).bottom)-((rc).top))
#endif

// align to (sizeof(int))
#ifndef _INTSIZEOF
#define _INTSIZEOF(TYPE)	((sizeof(TYPE)+sizeof(int)-1) & ~(sizeof(int)-1))
#endif

#ifndef ROUND_POSITIVE
#define ROUND_POSITIVE(x)		((((double)(x)-(int)(x))>0.5)?((int)((x)+1)):((int)(x)))
#endif
#ifndef ROUND_NEGATIVE
#define ROUND_NEGATIVE(x)		((((int)(x)-(double)(x))>0.5)?((int)((x)-1)):((int)(x)))
#endif

#ifndef ROUND
#define ROUND(x)				(((x)>0) ? ROUND_POSITIVE(x) : ROUND_NEGATIVE(x))
#endif

#ifndef offsetof
#define offsetof(s,m)		((size_t)&(((s*)0)->m))
#endif

#ifndef ARRAYSIZE
#define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0])) 
#endif

#ifndef MulDiv
#define MulDiv(a,b,c)       (((a)*(b))/(c))
#endif

#ifndef BMP_LINE_WIDTH
#define BMP_LINE_WIDTH(nImageWidth, nBitCount) (2 * 2 * (((nImageWidth) * (nBitCount) + 31) >> 5))
#endif

#ifndef BMP_RGBDATA_SIZE
#define BMP_RGBDATA_SIZE(nImageWidth, nImageHeight, nBitCount) (BMP_LINE_WIDTH(nImageWidth, nBitCount)*(nImageHeight))
#endif

//((x) < (0) ? (0) : ((x) > (255) ? (255) : (x)))	
#ifndef LIMITUNCHAR
#define LIMITUNCHAR(x_int, c_char)	\
{									\
	if ((x_int) < 0)				\
	{								\
		(c_char)=0x00;				\
	}								\
	else if ((x_int) > 0xFF)		\
	{								\
		(c_char)=0xFF;				\
	} 								\
	else							\
	{								\
		(c_char)=(BYTE)(x_int);		\
	}								\
}
#endif

#ifndef MAKEDWORD
#define MAKEDWORD(a, b, c, d)	((DWORD)(\
	((BYTE)(a)) | \
	(((DWORD)((BYTE)(b))) << 8) | \
	(((DWORD)((BYTE)(c))) << 16) | \
	(((DWORD)((BYTE)(d))) << 24) \
	))
#endif

#ifndef POINTTODWORD
#define POINTTODWORD(pt) (((pt.x) & 0x0000FFFF) | (((pt.y)<<16)&0xFFFF0000))
#endif

#ifdef WIN32
#define SHOWMSG _tprintf
#else 
#define SHOWMSG NKDbgPrintfW
#endif

#ifndef PRT_ERR
#define PRT_ERR(hr)																	\
	SHOWMSG(TEXT("Error In File %s, funcname=%s, line=%d, err code=0x%08x\r\n"),	\
	TEXT(__FILE__), TEXT(__FUNCTION__), __LINE__, hr)
#endif

#ifndef CHECKRESULT
#define CHECKRESULT(x)				\
{									\
	if (FAILED(hr = x))				\
	{								\
		PRT_ERR(hr);				\
	}								\
}
#endif

#ifndef FAILEDRETURN
#define FAILEDRETURN(x)				\
{									\
	if (FAILED(hr = x))				\
	{								\
		PRT_ERR(hr);				\
		return hr;					\
	}								\
}
#endif

#ifndef FAILEDBREAK
#define FAILEDBREAK(x)				\
{									\
	if (FAILED(hr = x))				\
	{								\
		PRT_ERR(hr);				\
		break;						\
	}								\
}
#endif

#ifndef FAILEDJUMP
#define FAILEDJUMP(x)				\
{									\
	if (FAILED(hr = x))				\
	{								\
		PRT_ERR(hr);				\
		goto Cleanup;				\
	}								\
}
#endif

#ifndef	SAFE_RELEASE
#define SAFE_RELEASE(x)   				\
{										\
    if (x)                				\
    {                       			\
        x->Release();       			\
        x = NULL;           			\
    }									\
}
#endif

#ifndef SAFE_ADDREF
#define SAFE_ADDREF(x)    				\
{										\
    if (x)                				\
    {                       			\
        x->AddRef();        			\
    }									\
}
#endif

#ifndef SAFE_DELETE
#define SAFE_DELETE(x)    				\
{										\
    if (x)                				\
    {                       			\
        delete x;           			\
        x = NULL;          				\
    }									\
}
#endif

#ifndef SAFE_DELETEARRAY
#define SAFE_DELETEARRAY(x)   			\
{										\
    if (x)                    			\
    {                           		\
        delete[] x;             		\
        x = NULL;               		\
    }									\
}
#endif

#ifndef SAFE_SYSFREESTRING
#define SAFE_SYSFREESTRING(x)			\
{										\
	if (x)								\
    {									\
        SysFreeString(x);				\
        x = NULL;						\
    }									\
}
#endif

#ifndef SAFE_CLOSEHANDLE
#define SAFE_CLOSEHANDLE(x)             \
{										\
    if (x && INVALID_HANDLE_VALUE != x) \
    {                                   \
        CloseHandle(x);                 \
        x = NULL;                       \
    }									\
}
#endif

#ifndef SAFE_DELETEOBJECT
#define SAFE_DELETEOBJECT(x)			\
{										\
	if (x)								\
	{									\
		DeleteObject(x) ;				\
		x = NULL ;						\
	}									\
}
#endif

#ifndef SAFE_DELETEDC
#define SAFE_DELETEDC(x)				\
{										\
	if (x)								\
	{									\
		DeleteDC(x) ;					\
		x = NULL ;						\
	}									\
}
#endif

#ifndef SAFE_RELEASEDC
#define SAFE_RELEASEDC(a, b)			\
{										\
	if (b)								\
	{									\
		ReleaseDC(a, b);				\
		b = NULL;						\
	}									\
}
#endif

#ifndef SAFE_DESTROYICON
#define SAFE_DESTROYICON(x)				\
{										\
	if (x)								\
	{									\
		DestroyIcon(x) ;				\
		x = NULL ;						\
	}									\
}
#endif

#ifndef SAFE_DESTROYWINDOW
#define SAFE_DESTROYWINDOW(x)			\
{										\
	if (x)								\
	{									\
		DestroyWindow(x) ;				\
		x = NULL ;						\
	}									\
}
#endif

#ifndef SAFE_CLOSESOCKET
#define SAFE_CLOSESOCKET(h)				\
{										\
	if (h)								\
	{									\
		closesocket(h) ;				\
		h = NULL ;						\
	}									\
}
#endif

#ifndef	SAFE_POINT_SETVALUE
#define SAFE_POINT_SETVALUE(p, v)  		\
{										\
	if (p)                				\
	{                       			\
		*(p) = (v) ;						\
	}									\
}
#endif

#ifndef	SAFE_STRNCPY
#define SAFE_STRNCPY(dst, src, len)  	\
{										\
	if (dst && src)   				    \
	{                       			\
	    if (len > 0)                    \
	    {                               \
			strncpy(dst, src, len) ;	\
			dst[len-1] = TEXT('\0') ;   \
		}								\
		else if (len == 0)				\
		{								\
			dst[0] = TEXT('\0') ;		\
		}								\
	}									\
}
#endif

#ifndef	SAFE_WCSNCPY
#define SAFE_WCSNCPY(dst, src, len)  	\
{										\
	if (dst && src)   				    \
	{                       			\
	    if (len > 0)                    \
	    {                               \
			wcsncpy(dst, src, len) ;	\
			dst[len-1] = TEXT('\0') ;   \
		}								\
		else if (len == 0)				\
		{								\
			dst[0] = TEXT('\0') ;		\
		}								\
	}									\
}
#endif

#ifdef _UNICODE
#define SAFE_TCSNCPY	SAFE_WCSNCPY
#else
#define SAFE_TCSNCPY	SAFE_STRNCPY
#endif

#ifndef EQUAL_POINT
#define EQUAL_POINT(pt1, pt2) ((((pt1)->x) == ((pt2)->x) && ((pt1)->y) == ((pt2)->y)) ? TRUE : FALSE)
#endif

#ifndef MoveWindowRect
#define MoveWindowRect(hwnd, prc, bRepaint) \
	MoveWindow(hwnd, (prc)->left, (prc)->top, (prc)->right-(prc)->left, (prc)->bottom-(prc)->top, bRepaint)
#endif

// MB2WC(WCHAR *wc, int nWCLength, char *mb, int nMBLength=-1, UINT uCodePage=CP_ACP)
#ifndef MB2WC
#define MB2WC(wc, nWCLength, mb, nMBLength, uCodePage) \
	MultiByteToWideChar(uCodePage, NULL, mb, nMBLength, wc, nWCLength)
#endif

// WC2MB(char *mb, int nMBLength, WCHAR *wc, int nWCLength=-1, UINT uCodePage=CP_ACP)
#ifndef WC2MB
#define WC2MB(mb, nMBLength, wc, nWCLength, uCodePage) \
	WideCharToMultiByte(uCodePage, NULL, wc, nWCLength, mb, nMBLength, NULL, NULL)
#endif

#endif //__COMMON_DEFINE_HEADER__