edit control 只知道赋值，怎么追加内容呢

edit control 只知道赋值，如何追加内容呢?
GetDlgItem(IDC_EDIT1)->SetWindowTextW(_T("asfdas"));
这样就会原来的内容被覆盖，怎么追加内容呢?

[解决办法]

C/C++ code

// MFC 版本CEdit* pEdit = GetDlgItem(IDC_EDIT1);ASSERT(pEdit && pEdit->GetSafeHwnd());pEdit->SetSel(-1);pEdit->ReplaceSel(_T("Hello, World!"));// SDK 版本HWND hEdit = ::GetDlgItem(hWnd, IDC_EDIT1);ASSERT(hEdit);::SendMessage(hEdit, EM_SETSEL, LOWORD(-1), HIWORD(-1));::SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)(_T("Hello, World!")));