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.
void AFXAPI DDX_Check( CDataExchange* pDX, int nIDC, int& value );
- 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.
When DDX_Check is called, value is set to the current state of the check box control. For a list of the possible state values, see BM_GETCHECK in the Platform SDK.
For more information about DDX, see Dialog Data Exchange and Validation.