131 lines
2.8 KiB
C
131 lines
2.8 KiB
C
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//////////////////////////////////////////////////////////////////////////////
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/*++
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Copyright (C) Microsoft Corporation, 1998 - 1999
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Module Name:
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ChangeNotification.h
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Abstract:
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Declaration of the CChangeNotification class.
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Several of the MMC notification mechanisms accept on one or two parameters for
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sending information.
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For example, MMCPropertyChangeNotify accepts only one long param handle which
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can be used to send information back to the main snapin from the separate
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thread in which a property page runs.
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Sometimes, this isn't enough information, so this structure allows us
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to encapsulate more information to pass around.
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This is all inline -- there is no implementation file.
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Revision History:
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mmaguire 07/17/98 - based on Baogang Yao's original implementation
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--*/
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//////////////////////////////////////////////////////////////////////////////
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#if !defined(_CHANGE_NOTIFICATION_H_)
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#define _CHANGE_NOTIFICATION_H_
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//////////////////////////////////////////////////////////////////////////////
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// BEGIN INCLUDES
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//
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// where we can find what this class derives from:
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//
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//
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// where we can find what this class has or uses:
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//
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//
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// END INCLUDES
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//////////////////////////////////////////////////////////////////////////////
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// Notification flags:
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// No special handling required.
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const DWORD CHANGE_UPDATE_RESULT_NODE = 0x00;
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// The policy name for this node has been changed. This is used for renaming of policy.
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const DWORD CHANGE_PARENT_MUST_BE_UPDATED_TOO = 0x01;
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// The policy name for this node has been changed. This is used for renaming of policy.
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const DWORD CHANGE_NAME = 0x02;
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// Some information has changed -- e.g. Connect action finished. Make sure the result view
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// of the currently selected scope node is updated.
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const DWORD CHANGE_UPDATE_CHILDREN_OF_SELECTED_NODE = 0x04;
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// Make sure the result view of the currently selected scope node is updated.
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const DWORD CHANGE_UPDATE_CHILDREN_OF_THIS_NODE = 0x08;
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// Will require a parent redraw and some selection changes.
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const DWORD CHANGE_RESORT_PARENT = 0x10;
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class CChangeNotification
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{
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public:
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// What kind of notitification.
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DWORD m_dwFlags;
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// Which node was affected.
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CSnapInItem * m_pNode;
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// The parent node of the node which changed.
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CSnapInItem * m_pParentNode;
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// Extra data.
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DWORD m_dwParam;
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// A string -- can be used however needed.
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CComBSTR m_bstrStringInfo;
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// Constructor -- set ref count to 1.
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CChangeNotification( void )
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{
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m_lRefs = 1;
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}
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// COM-style lifetime management.
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LONG AddRef( void )
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{
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return InterlockedIncrement( &m_lRefs );
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}
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// COM-style lifetime management.
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LONG Release( void )
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{
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LONG lRefCount = InterlockedDecrement( &m_lRefs );
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if( 0 == lRefCount )
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{
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delete this;
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}
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return lRefCount;
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}
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private:
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LONG m_lRefs;
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};
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#endif // _CHANGE_NOTIFICATION_H_
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