Problem with addition button in Report Control

Not working!!!!!

Hi, can't addition button in My Report Control, I do:

OnCreate()
{
    .
    .
    .

    CXTPReportInplaceButton m_Btn(ID_BTN);
    CRect rect(50,50, 50, 50);

      XTP_REPORTRECORDITEM_ARGS pItemArgs(&m_wndView,m_wndView.GetRows()->GetAt(0),m_wndView.GetColumns()->GetAt(5));
 
    m_Btn.Create(&pItemArgs,rect);
    m_Btn.SetInsideCellButton(TRUE);
    m_Btn.ShowWindow(TRUE);
}

But button not display in control :( Why?????