C / C++ / MFC

<br />
#pragma pack(1)<br />
struct A<br />
{<br />
  A(){<br />
	Sig1 = 'A';<br />
	Sig2 = 'B';<br />
	Sig3 = 'C';<br />
	Version = '1';<br />
	Numbers = 2;<br />
	Reserved = 0;<br />
	Offset = 0;<br />
   }<br />
   char Sig1;<br />
   char Sig2;<br />
   char Sig3;<br />
   char Version;<br />
   char Numbers:7;<br />
   char Reserved:1;<br />
   unsigned long Offset; <br />
};<br />
<br />
struct B<br />
{<br />
   B(){<br />
	Id=0;<br />
	Reserved=0;<br />
	Offset=0;}<br />
   char Id:7;<br />
   char Reserved:1;<br />
   long Offset;<br />
};<br />
<br />
#pragma pack()<br />
<br />
// calc size<br />
int sizeA = sizeof A;<br />
int sizeB = sizeof B;<br />
	<br />
// struct A<br />
A a;<br />
a.Sig1 = 'D';<br />
<br />
// struct B #1<br />
B b1;<br />
b1.Id = 0;<br />
b1.Offset = 0;<br />
	<br />
// struct B #2<br />
B b2;<br />
b2.Id = 1;<br />
b2.Offset = 0;<br />
		<br />
// serialize	<br />
int nSizeSer = (2*sizeB)+sizeA;<br />
char* pBuff = new char[nSizeSer];<br />
memcpy(pBuff, &a, sizeA);<br />
memcpy(pBuff+sizeA, &b1, sizeB);<br />
memcpy(pBuff+sizeB, &b2, sizeB);<br />
<br />
// de-serialize<br />
B b2_dupe;<br />
int offset = sizeA+sizeB;<br />
pBuff+=offset; //move ptr<br />
memcpy(&b2_dupe,pBuff,sizeB);<br />
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