Creating the Month Calendar Control
How the month calendar control is created depends on whether you are using the control in a dialog box or creating it in a nondialog window.
To use CMonthCalCtrl directly in a dialog box
In the dialog editor, add a Month Calendar Control to your dialog template resource. Specify its control ID.
Specify any styles required, using the Properties dialog box of the month calendar control.
Use the Add Member Variable Wizard to add a member variable of type CMonthCalCtrl with the Control property. You can use this member to call CMonthCalCtrl member functions.
Use the Properties window to map handler functions in the dialog class for any month calendar control notification messages you need to handle (see Mapping Messages to Functions).
In OnInitDialog, set any additional styles for the CMonthCalCtrl object.
To use CMonthCalCtrl in a nondialog window
Define the control in the view or window class.
Call the control's Create member function, possibly in OnInitialUpdate, possibly as early as the parent window's OnCreate handler function (if you're subclassing the control). Set the styles for the control.