what is the usage of these funcitons ?Code:void CTransparentDialogDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
CDialog::OnLButtonDown(nFlags, point); //<<<< this
}
void CTransparentDialogDlg::OnSize(UINT nType, int cx, int cy)
{
CDialog::OnSize(nType, cx, cy); //<< and this
}