author | William Roberts <williamr@symbian.org> |
Tue, 16 Mar 2010 16:12:26 +0000 | |
branch | Symbian2 |
changeset 2 | 2fe1408b6811 |
parent 0 | 061f57f2323e |
child 4 | 837f303aceeb |
permissions | -rw-r--r-- |
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// Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// Definition of class that needs to be provided by a Key Click plugin |
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// |
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// |
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#ifndef __W32CLICK_H__ |
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#define __W32CLICK_H__ |
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#ifndef __E32STD_H__ |
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#include <e32std.h> |
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#endif |
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#ifndef __E32BASE_H__ |
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#include <e32base.h> |
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#endif |
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#ifndef __W32STD_H__ |
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#include <w32std.h> |
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#endif |
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class CClickMaker: public CBase |
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/** Key or pointer click plug-in provider interface. |
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This class should be implemented by a plug-in DLL in order to produce a sound |
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when a key is pressed, a key auto repeats or when the screen is tapped with |
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a pointer. When any of these events occur, the window server informs the plug-in |
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DLL, which can then make the sound. |
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The details of the event are also passed to the plug-in so that the sound |
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can be tailored to the precise event, for example clicking on different keys on the |
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keypad or on different parts of the screen could make different sounds. |
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The name of the initial plug-in to use can be specified in the wsini.ini configuration |
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file using the KEYCLICKPLUGIN or KEYCLICKPLUGINFIXED keywords. When the operating |
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system boots, wsini.ini is read for the name of this plug-in. If a plug-in |
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name exists, the window server will try to load it. At a later time, any client |
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of the window server can request a new plug-in to be loaded or the current |
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one to be unloaded, using the RSoundPlugIn class. |
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The plug-in is a polymorphic DLL which implements the CClickMaker interface. |
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Its first UID is KDynamicLibraryUidValue and its second UID is 0x10004F63. |
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Its first exported function should create an object of the CClickMaker sub-class |
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and should have the following signature: |
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EXPORT_C CClickMaker* CreateClickMakerL() |
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@publishedAll |
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@released |
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@see RSoundPlugIn */ |
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{ |
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public: |
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/** This function is called by the window server whenever there is a key event, |
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to generate the sound. |
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It must be implemented by the key or pointer click plug-in. |
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If the sound cannot be made, the function should continue without leaving. |
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@param aType The type of key event: EEventKey, EEventKeyUp, EEventKeyDown |
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or EEventKeyRepeat. |
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@param aEvent The key event details. */ |
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virtual void KeyEvent(TEventCode aType,const TKeyEvent& aEvent)=0; |
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/** This function is called by the window server whenever there is a pointer event, |
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to generate the sound. |
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It must be implemented by the key or pointer click plug-in. |
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If the sound cannot be made, the function should continue without leaving. |
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The iParentPosition data member of aEvent is not the position of the pointer |
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event relative to origin of the parent window. Instead it is the position |
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on the screen. This is because the parent window has no meaning inside the |
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plug-in as it does to the window server client and also knowledge |
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of the screen position may be useful to the plug-in. |
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@param aEvent The pointer event details. */ |
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virtual void PointerEvent(const TPointerEvent& aEvent)=0; |
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/** This function is intended for future expansion of the interface, in case it |
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needs to support sounds for other types of event. |
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Currently it is called by the window server, with several values for aType. |
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For each of these aParam will need to be cast to a different class type |
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to get the data: |
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EEventPointer: cast to TPointerEventData* |
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EEventScreenDeviceChanged: TClickMakerData* |
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EEventGroupWindowOpen: TGroupWindowOpenData* |
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EEventGroupWindowClose: TInt (the identifier of the window group being closed) |
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EEventWindowClose: TWindowCloseData* |
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@param aType One of the above listed values, in future may be used with other values. |
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@param aParam See above. */ |
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virtual void OtherEvent(TInt aType,TAny* aParam=NULL)=0; |
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/** This function may be implemented by the key or pointer click plug-in to enable |
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the plug-in to communicate with the window server client. |
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If this is not required, the implementation may simply return zero. |
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It is called by RSoundPlugIn::CommandReply() which returns the value returned |
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by this function. |
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|
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The return value can be generated either by returning it from the function |
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or by leaving with the value. In either case, the client will get back the |
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value concerned. |
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@param aOpcode Opcode understood by both the window server client and the |
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plug-in DLL. |
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@param aArgs Arguments packaged by the window server client. |
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@return A value passed back to the client. This may be KErrNone or another |
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of the system-wide error codes. */ |
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virtual TInt CommandReplyL(TInt aOpcode, TAny *aArgs)=0; |
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}; |
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struct TClickMakerData |
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/** |
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Passed to a Key Click Plug-in using the function CClickMaker::OtherEvent when the |
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aType value is EEventScreenDeviceChanged. |
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|
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@publishedAll |
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@released |
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*/ |
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{ |
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TInt screenDeviceMode; |
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}; |
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class TPointerEventData |
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/** |
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Passed to a Key Click Plug-in using the function CClickMaker::OtherEvent when the |
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aType value is EEventPointer. |
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This includes information about the window the pointer event will be sent to. |
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This is the normally the window being clicked on by the user, but pointer capturing |
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and grabbing may affect this. |
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|
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@publishedAll |
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@released |
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*/ |
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{ |
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public: |
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enum TSource |
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/** |
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A list of locations that WSERV receives events from |
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*/ |
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{ |
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/** The source is not specified. */ |
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EUnspecified, |
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/** The event came from the kernel. */ |
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EKernel, |
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/** The event came from a client API. */ |
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EClient, |
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/** The event came from an Anim DLL. */ |
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EAnimDLL, |
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}; |
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public: |
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/** |
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The version number of the data passed with EEventPointer, current always 0. |
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*/ |
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TInt iVersion; |
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/** |
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The screen position of pointer event. |
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*/ |
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TPoint iCurrentPos; |
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/** |
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The full pointer event data previously passed to the CClickMaker::PointerEvent function, |
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except that the iParentPosition will be the actual parent position, when previously passed |
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to the plug-in this value was the screen position. |
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*/ |
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TPointerEvent iPointerEvent; |
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/** |
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The client handle of the window or zero if the window is not a client window. |
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*/ |
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TUint32 iClientHandle; |
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/** |
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The current top left of the window on the screen. |
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*/ |
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TPoint iWindowOrigin; |
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/** |
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The Window Group Identifier of the window group that is a parent (or grand parent etc.) |
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of the window the event is sent to or zero if the window is not a client window. |
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*/ |
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TInt iWindowGroupId; |
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/** |
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The source that WSERV recieves the event from, |
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currently set to EUnspecified as this is for future expansion. |
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*/ |
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TSource iSource; |
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}; |
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class TGroupWindowOpenData |
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/** |
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Passed to a Key Click Plug-in using the function CClickMaker::OtherEvent when the |
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aType value is EEventGroupWindowOpen. |
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205 |
|
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@publishedAll |
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@released |
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*/ |
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{ |
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public: |
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/** |
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The Window Group Identifier of the window being created. |
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*/ |
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TInt iIdentifier; |
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/** |
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A number unique to the client creating the window group - allows the Plug-in to tell |
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different clients apart. |
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*/ |
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TUint iClient; |
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/** |
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The number of Window Groups currently owned by that client (not including the one being created). |
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*/ |
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TInt iNumClientWindowGroups; |
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}; |
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class TWindowCloseData |
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/** |
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Passed to a Key Click Plug-in using the function CClickMaker::OtherEvent when the aType value |
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is EEventWindowClose. |
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|
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@publishedAll |
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@released |
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*/ |
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{ |
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public: |
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/** |
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The client handle of the window being closed. |
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*/ |
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TUint32 iClientHandle; |
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/** |
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The Window Group Identifier of the window group that is a parent (or grandparent etc.) |
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of the window being closed, or 0 if the window has been orphaned. |
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*/ |
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TInt iWindowGroupId; |
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}; |
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#endif |