DDX_OCColorRO
The DDX_OCColorRO function manages the transfer of OLE_COLOR data between a read-only property of an OLE control in a dialog box, form view, or control view object and a OLE_COLOR data member of the dialog box, form view, or control view object.
void AFXAPI DDX_OCColorRO( CDataExchange* pDX, int nIDC, DISPID dispid, OLE_COLOR & value );
For more information about DDX, see Dialog Data Exchange and Validation.