GetWindowsText

hwnd_machine_name = CreateWindow(TEXT("EDIT"), NULL, WS_CHILD | WS_OVERLAPPED | WS_VISIBLE, 20, 110, 170, 20, hWnd, NULL, hinst, NULL);
LPWSTR buf;
            buf = new TCHAR[GetWindowTextLength(hwnd_machine_name) + 1];
            int b = GetWindowTextLength(hwnd_machine_name);
            GetWindowText(hwnd_machine_name, buf, GetWindowTextLength(hwnd_machine_name) + 1);
delete[] buf;

wstring TControl::DoGetText() const{
    wstring Result;
    unsigned Size=GetWindowTextLength(Handle);
    if (Size) {
        Result.reserve(Size);
        InternalGetWindowText(Handle,(wchar_t*)Result.data(),Size);
    }
    return Result;
}