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The framework calls this member function to determine if the current window accepts ANSI or Unicode structures in the WM_NOTIFY notification message.
This parameter is the pointer to a control if the nCommand parameter is NF_QUERY, or the pointer to the parent window of a control if nCommand is NF_REQUERY.
A command value that specializes the WM_NOTIFY message. The possible values are:
This method receives the WM_NOTIFYFORMAT notification, which is described in the Windows SDK. WM_NOTIFY messages are sent from a common control to its parent window, and from the parent window to the common control.
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.
This method is supported in Windows Vista and later.
Additional requirements for this method are described in Build Requirements for Windows Vista Common Controls.