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I have created a simple CExtGridCellRadioButton overriden class (below) but the ’OnButtonPressed’ member is NOT being called.
Yes, I have the IMPLEMENT_DYNCREATE(RadioButty, CExtGridCellRadioButton ) defined above any IFDEF DEBUG macros
Also, I am putting this into a CExtTreeGridWnd derived grid.

???why is OnButtonPressed() not being called???

--------------

class CRadioButty:
    public CExtGridCellRadioButton
{

DECLARE_DYNCREATE( RadioButty );

IMPLEMENT_ExtGridCell_Clone( RadioButty, CExtGridCellRadioButton );

RadioButty(CExtGridDataProvider * pDP = NULL): CExtGridCellRadioButton(pDP) {}

~RadioButty(void){}


virtual void

    OnButtonPressed(CExtGridWnd & wndGrid,

                INT nButtonType,

                const RECT & rcCellExtra,

                const RECT & rcCell,

                LONG nVisibleColNo,

                LONG nVisibleRowNo,

                LONG nColNo,

                LONG nRowNo,

                INT nColType,

                INT nRowType)
{
// note this override is NOT called!!!!!!!!!!!!!!!!
CString msg;

msg.Format(_T("Pressed at col = [%d] row = [%d]"), nColNo, nRowNo);

AfxMessageBox(msg);

}



virtual bool
    OnQueryButtonInfo(
INT nButtonType,
bool * p_bEnabled,
bool * p_bPressed = NULL,
bool * p_bStayPressed = NULL,
UINT * p_nTimerElapseValue = NULL
) const
{
// note this override is NOT called!!!!!!!!!!!!!!!!
return false;
}
-------------------------------------

CExtGridCell*** cells support three built-in buttons that can be displayed in the right part of the cell:

• an up-down button
• a drop-down button
• an ellipsis button

So any combination of these buttons can be displayed or hidden. The CExtGridCell::OnButtonPressed() virtual method is invoked to notify that the button is pressed. Please note the built-in buttons are not supported in CExtGridCellRadioButton. If you want to catch the event of changing the check mark state in a CExtGridCellRadioButton grid cell, you should override the CExtGridCell::ModifyStyle() virtual method and determine if the __EGCS_CHECKED is added or removed.