void CChangeSizeView::OnButton4()
{
// TODO: Add your control notification handler code here
CWnd* pBtn5= this->GetDlgItem(IDC_BUTTON5);
pBtn5->ShowWindow(0);
}
void CChangeSizeView::OnButton6()
{
// TODO: Add your control notification handler code here
CWnd* pBtn5= this->GetDlgItem(IDC_BUTTON5);
pBtn5->ShowWindow(1);
}