Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All
Expand Minimize
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.


The framework calls this member function after the SetWindowLong function has changed one or more of the window's styles.

afx_msg void OnStyleChanged( 
   int nStyleType, 
   LPSTYLESTRUCT lpStyleStruct  


Specifies whether the window's extended or nonextended styles have changed. This parameter can be a combination of the following values:

  • GWL_EXSTYLE   The window's extended styles have changed.

  • GWL_STYLE   The window's nonextended styles have changed.


Points to a STYLESTRUCT structure that contains the new styles for the window. An application can examine the styles, but it can not change them.


This member function is called by the framework to allow your application to handle a Windows message. The parameters passed to your function reflect the parameters received by the framework when the message was received. If you call the base-class implementation of this function, that implementation will use the parameters originally passed with the message and not the parameters you supply to the function.

Header: afxwin.h

Community Additions

© 2015 Microsoft