问C/C++中的非固定结构

EN

typedef struct TOWRITE
{
 DWORD dwHeader;
 WORD datacount;
}

TOWRITE towrite;
LPBYTE lpData;
WORD checksum;

ZeroMemory( &towrite, sizeof( TOWRITE ));
lpData = (LPBYTE) new BYTE[256];

towrite.dwHeader = 0xF1F1E1E1;
towrite.datacount = 256;
cheksum = 3849;
CopyMemory( lpData, szTemp, 256 );

.....

.....

.....

f.write( (LPBYTE)&towrite, sizeof(TOWRITE) );
f.write( (LPBYTE)&lpData, datacount );
f.write( (LPBYTE)&checksum, 2 );
....
....
....
....

typedef struct TOWRITE
{
   DWORD dwHeader;
   WORD datacount;
   WORD checksum;
   LPBYTE lpData; //Put the ptr at the end
}

// - sizeof(LPBYTE) avoid the ptr @ to be written
f.write( (LPBYTE)&towrite, sizeof(TOWRITE) - sizeof(LPBYTE));  

// write the ptr data.
// sorry I don't know windows C.
// fix the size of the array element :)
f.write( towrite.lpData, towrite.datacount * sizeof(????));