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CWindow::ModifyStyleEx

Modifies the extended window styles of the CWindow object.

BOOL ModifyStyleEx( 
   DWORD dwRemove, 
   DWORD dwAdd, 
   UINT nFlags = 0  
) throw();

Parameters

  • dwRemove
    [in] Specifies the extended styles to be removed during style modification.

  • dwAdd
    [in] Specifies the extended styles to be added during style modification.

  • nFlags
    [in] Window-positioning flags. For a list of possible values, see the SetWindowPos function in the Windows SDK.

Return Value

TRUE if the extended window styles are modified; otherwise, FALSE.

Remarks

Styles to be added or removed can be combined by using the bitwise OR ( | ) operator. See the CreateWindowEx function in the Windows SDK* *for information about the available extended styles.

If nFlags is nonzero, ModifyStyleEx calls the Win32 function SetWindowPos, and redraws the window by combining nFlags with the following four flags:

  • SWP_NOSIZE   Retains the current size.

  • SWP_NOMOVE   Retains the current position.

  • SWP_NOZORDER   Retains the current Z order.

  • SWP_NOACTIVATE   Does not activate the window.

To modify windows using regular window styles, call ModifyStyle.

Example

//The following example attaches an HWND to the CWindow object and  
//calls CWindow::ModifyStyleEx() to add and remove the extended  
//window styles

CWindow myWindow;
myWindow.Attach(hWnd);

//The following line removes WS_EX_CONTEXTHELP extended style from  
//the window and adds WS_EX_TOOLWINDOW extended style to the window 

myWindow.ModifyStyleEx(WS_EX_CONTEXTHELP, WS_EX_TOOLWINDOW);

Requirements

Header: atlwin.h

See Also

Reference

CWindow Class

CWindow::GetExStyle