获取其他进程Listctrl的数据

//
// http://www.codeproject.com/KB/threads/int64_memsteal.aspx
//
HANDLE InjectProcess(HWND listview)
{
	unsigned long pid;
	HANDLE process;

	GetWindowThreadProcessId(listview, &pid);

 process=OpenProcess(PROCESS_VM_OPERATION|PROCESS_VM_READ|
                     PROCESS_VM_WRITE|PROCESS_QUERY_INFORMATION, FALSE, pid);

	return process;
 
}

void* MallocInPocess(HANDLE process, size_t size, void *def_val=NULL)
{
	void* p = VirtualAllocEx(process, NULL, size,
                              MEM_COMMIT, PAGE_READWRITE);

	if(def_val)
		VERIFY(WriteProcessMemory(process, p, def_val, size, NULL));

	return p;
}

void FreeInPocess(HANDLE process, void* _lvi)
{
	VirtualFreeEx(process, _lvi, 0, MEM_RELEASE);
}

CString CListCtrl_GetItemText(HWND m_hWnd, HANDLE hProcess, int nItem, int nSubItem)
{
	ASSERT(::IsWindow(m_hWnd));
	
	CString s;

	//
	// lvi
	//
	LVITEM lvi;
	memset(&lvi, 0, sizeof(LVITEM));
	lvi.iSubItem = nSubItem;
	
	const int nLen = 1280;
	
	int nRes;
	lvi.cchTextMax = nLen;
	
	//memory
	TCHAR *str = (TCHAR*)MallocInPocess(hProcess, nLen*sizeof(TCHAR));
	if(!str)
		return s;

	lvi.pszText = str;

	LVITEM *plvi = (LVITEM*)MallocInPocess(hProcess, sizeof(LVITEM), &lvi);
	if(!plvi)
		return s;

	nRes  = (int)::SendMessage(m_hWnd, LVM_GETITEMTEXT, (WPARAM)nItem,
		(LPARAM)plvi);
	
	TCHAR str2[nLen];

	VERIFY(ReadProcessMemory(hProcess, str, str2, 512, NULL));

	s = str2;

	FreeInPocess(hProcess, plvi);
	FreeInPocess(hProcess, str);

	return s;
}

void Ctest2Dlg::OnBnClickedButton1()
{
	HWND hMain = ::FindWindowEx(NULL,NULL,NULL,_T("test1"));
	HWND hList = ::FindWindowEx(hMain, NULL , _T("SysListView32"), NULL);
	ASSERT(hList);

	CListCtrl List;
	VERIFY(List.Attach(hList));
	int nItem = List.GetItemCount();
	int nCol = List.GetHeaderCtrl()->GetItemCount();

	HANDLE hPoc = InjectProcess(hList);

	for(int i=0; i<nItem; i++)
	{
		for(int j=0; j<nCol; j++)
		{
			CString szText = CListCtrl_GetItemText(hList,hPoc,i,j);
			TRACE("%s\n", szText);
			MessageBox(szText);
		}
	}

	List.Detach();
}