MFC创建非模态对话框并修改CStatic文字

//由IDD_STATUS_DIALOG创建一个对话框
CDialog* pCheckNetStatusDlg = new CDialog();
	pCheckNetStatusDlg->Create(IDD_STATUS_DIALOG, this);
	RECT statusWndClientRect, mainWndClientRect, mainWndRect;
	pCheckNetStatusDlg->GetClientRect(&statusWndClientRect);
	this->GetClientRect(&mainWndClientRect);
	this->GetWindowRect(&mainWndRect);
	pCheckNetStatusDlg->ShowWindow(SW_SHOW);
	pCheckNetStatusDlg->MoveWindow((mainWndClientRect.right - statusWndClientRect.right) / 2 + mainWndRect.left, 
		(mainWndClientRect.bottom - statusWndClientRect.bottom) / 2 + mainWndRect.top, 
		statusWndClientRect.right, statusWndClientRect.bottom);
	CString strStatus = "当前状态";
//修改IDC_STATIC_STATUS的文字
	CWnd* pWndStatus = pCheckNetStatusDlg->GetDlgItem(IDC_STATIC_STATUS);
	//设置新的文字
	pWndStatus->SetWindowText(strStatus);
	CDC* pDC = GetDC();
	//计算文字长度
	CSize sizeStatus = pDC->GetTextExtent(strStatus);
	RECT rectStatus;
	//得到文字在屏幕上的位置
	pWndStatus->GetWindowRect(&rectStatus);
	//设置文字位置
	rectStatus.left = (rectStatus.left + rectStatus.right) / 2 - sizeStatus.cx / 2;
	rectStatus.right = rectStatus.left + sizeStatus.cx;
	pCheckNetStatusDlg->ScreenToClient(&rectStatus);
	//调整大小
	pWndStatus->MoveWindow(&rectStatus);
	//刷新窗口 Invalidate()是发送一个命令WM_PAINT来重画窗口, WM_PAINT是优先级比较低的, UpdateWindow是立即重画, 优先级高
	pCheckNetStatusDlg->UpdateWindow();