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The DDX_Check function manages the transfer of int data between a check box control in a dialog box, form view, or control view object and a int data member of the dialog box, form view, or control view object.
A pointer to a CDataExchange object. The framework supplies this object to establish the context of the data exchange, including its direction.
The resource ID of the check box control associated with the control property.
A reference to a member variable of the dialog box, form view, or control view object with which data is exchanged.