getdataview.cpp

symbian中讲述的一个有关M类使用的例子

/*
* ============================================================================
*  Name     : CGetDataView from CAknView
*  Part of  : GetData
*  Copyright (c) 2003 Nokia. All rights reserved.
* ============================================================================
*/

// INCLUDE FILES
#include <aknviewappui.h>
#include <avkon.hrh>

#include <MClassExample.rsg>
#include "MClassExample.hrh"
#include "GetDataView.h"
#include "GetDataContainer.h" 

#include <aknnotewrappers.h> 

// ================= MEMBER FUNCTIONS =======================

// C++ default constructor can NOT contain any code, that
// might leave.
//
CGetDataView::CGetDataView()
    {
    }

CGetDataView* CGetDataView::NewL()
{
	CGetDataView* self = NewLC();
	CleanupStack::Pop(self);
	return self;
}

CGetDataView* CGetDataView::NewLC()
{
	CGetDataView* self = new(ELeave)CGetDataView();
	CleanupStack::PushL(self);
	self->ConstructL();
	return self;
}
void CGetDataView::SendData(const TDesC& aData)
{
	m_Data.Copy(aData);
}

// EPOC default constructor can leave.
void CGetDataView::ConstructL()
    {
    BaseConstructL(R_GD_VIEW);
    }

// Destructor
CGetDataView::~CGetDataView()
    {
    if (iContainer)
        {
        AppUi()->RemoveFromStack(iContainer);
        }

    delete iContainer;
    }

// ---------------------------------------------------------
// TUid CGetDataView::Id()
// Returns Id of the view.
// ---------------------------------------------------------
TUid CGetDataView::Id() const
    {
    return KViewId2;
    }

// ---------------------------------------------------------
// CGetDataView::HandleCommandL(TInt aCommand)
// Handles commands
// ---------------------------------------------------------
void CGetDataView::HandleCommandL(TInt aCommand)
    {   
    switch (aCommand)
        {
	case EgdCommandget:
		{
		CAknInformationNote* informationNote = new(ELeave) CAknInformationNote;
		informationNote->ExecuteLD(m_Data);
		}
		break;
    default:
        AppUi()->HandleCommandL(aCommand);
        break;
        }
    }

// ---------------------------------------------------------
// CGetDataView::HandleClientRectChange()
// Handles client rect change.
// ---------------------------------------------------------
void CGetDataView::HandleClientRectChange()
    {
    if (iContainer)
        {
        iContainer->SetRect(ClientRect());
        }
    }


// void CGetDataView::DoActivateL(const TVwsViewId& /*aPrevViewId*/,
//                                     TUid aCustomMessageId,
//                                     const TDesC8& aCustomMessage)
//     {
// 	if( aCustomMessage.Length() )
// 	{
// 		TViewPara info;
// 		TPckgBuf< TViewPara > package( info );
// 		package.Copy( aCustomMessage );
// 		info = package();     //iInfo是TViewPara类型的数据成员
// 	}
// 
// 	iContainer = new (ELeave) CGetDataContainer;
// 	iContainer->SetMopParent(this);
// 	TRect rc;
// 	rc.SetRect(ClientRect().iTl,TSize(176,144));
// 	iContainer->ConstructL(rc);//ClientRect());
// 	AppUi()->AddToStackL(*this, iContainer);
// }

// ---------------------------------------------------------
// CGetDataView::DoActivateL(...)
// Creates the Container class object.
// ---------------------------------------------------------
void CGetDataView::DoActivateL(const TVwsViewId& /*aPrevViewId*/,
                                    TUid /*aCustomMessageId*/,
                                    const TDesC8& /*aCustomMessage*/)
    {
    iContainer = new (ELeave) CGetDataContainer;
    iContainer->SetMopParent(this);
		TRect rc;
		rc.SetRect(ClientRect().iTl,TSize(176,144));
    iContainer->ConstructL(rc);//ClientRect());
    AppUi()->AddToStackL(*this, iContainer);
    }

// ---------------------------------------------------------
// CGetDataView::DoDeactivate()
// Deletes the Container class object.
// ---------------------------------------------------------
void CGetDataView::DoDeactivate()
    {
    if (iContainer)
        {
        AppUi()->RemoveFromStack(iContainer);
		delete iContainer;
		iContainer = NULL;
        }
    }

// End of File