We recommend using Visual Studio 2017
This documentation is archived and is not being maintained.


Unlocks the class factory of the specified control.

BOOL AFXAPI AfxOleUnlockControl( 
   REFCLSID clsid  
BOOL AFXAPI AfxOleUnlockControl( 
   LPCTSTR lpszProgID  


The unique class ID of the control.


The unique program ID of the control.

Nonzero if the class factory of the control was successfully unlocked; otherwise 0.

A control is locked with AfxOleLockControl, so that dynamically created data associated with the control remains in memory. This can significantly speed up display of the control because the control need not be created and destroyed every time it is displayed. When you are ready to destroy the control, call AfxOleUnlockControl.

// Unlock control's (Microsoft Calendar Control) class factory.


Header: <afxwin.h>