IPictureDisp* m_pMouseIcon;
Remarks
The data member that stores a pointer to IPictureDisp picture properties of the graphic (icon, bitmap, or metafile) to be displayed when the mouse is over the control. The properties include the handle of the picture. If you choose the MOUSEICON option from the Stock Properties tab in the ATL Object Wizard, the wizard automatically creates this data member in your control class, creates put and get methods for the property, and supports IPropertyNotifySink to automatically notify the container when the property changes.
CComControl Overview | Class Members
See Also CComControl::m_nMousePointer