堆被损坏

[huzzyy]

	TCHAR t_i = (TCHAR)i;
	HGLOBAL hData = GlobalAlloc(GHND, (sContens.GetLength()+2)*2 );
	TCHAR *pS = (TCHAR *)GlobalLock( hData );
         memcpy(pS , &t_i ,2);
	memcpy( pS+2, (LPCTSTR)sContens, (sContens.GetLength()+1)*2 );
	GlobalUnlock( hData );

想在hData内存块中写入一个整数i和一个字符串sContens，报错堆被损坏了，请问原因是什么？如何修正呢？谢谢

[yuucyf]

[Quote=引用楼主 huzzyy 的回复:]
C/C++ code

TCHAR t_i = (TCHAR)i;
HGLOBAL hData = GlobalAlloc(GHND, (sContens.GetLength()+2)*2 );
TCHAR *pS = (TCHAR *)GlobalLock( hData );
memcpy(pS , &t_i ,2);
mem……
[/Quote]
你的程序尽管写的不对，拿到非Unicode下结果会不对，单单凭这片段程序没看出来导致堆损坏.
1）(sContens.GetLength()+2)*2 应该要变为(sContens.GetLength() + sizeof(TCHAR) * 2);
2）memcpy(pS , &t_i ,2) 应该要变为memcpy(pS , &t_i , sizeof(TCHAR));
3) memcpy(pS+2, (LPCTSTR)sContens, (sContens.GetLength()+1)*2 )应该要变为
memcpy(pS+sizeof(TCHAR), (LPCTSTR)sContens, sContens.GetLength);

[huzzyy]

谢谢楼上指点