singlelistcontainer.cpp

symbian中讲述的一个有关grid的简单例子

/*
* ============================================================================
*  Name     : CSingleListContainer from CCoeControl, MCoeControlObserver
*  Part of  : Hello
*  Copyright (c) 2003 Nokia. All rights reserved.
* ============================================================================
*/

// INCLUDE FILES


#include <MyHello.rsg>
#include "MyHello.hrh"
#include "SingleListContainer.h"
#include "common.h"

#include <aknlists.h>

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

// C++ default constructor can NOT contain any code, that
// might leave.
//
CSingleListContainer::CSingleListContainer()
    {
	m_pSingleListBox = NULL;
	m_pListBoxArray = NULL;
    }

// EPOC default constructor can leave.
void CSingleListContainer::ConstructL(const TRect& aRect)
    {
    CreateWindowL();

	//Single ListBox
	m_pSingleListBox = new( ELeave ) CAknSingleNumberStyleListBox();
	CleanupStack::PushL(m_pSingleListBox);
	m_pSingleListBox->ConstructL(this, EAknListBoxMarkableList | EAknListBoxMultiselectionList);	
	m_pSingleListBox->SetContainerWindowL(*this);
	m_pSingleListBox->SetRect(aRect);
    m_pSingleListBox->CreateScrollBarFrameL( ETrue );
    m_pSingleListBox->ScrollBarFrame()->SetScrollBarVisibilityL(CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto);
	
	// construct listbox item array
	m_pListBoxArray = new (ELeave) CDesCArrayFlat(10);
	CleanupStack::PushL(m_pListBoxArray);
	
	CTextListBoxModel* model = m_pSingleListBox->Model();
	// set items and ownership
	model->SetItemTextArray( m_pListBoxArray );
	model->SetOwnershipType(ELbmDoesNotOwnItemArray);
	CleanupStack::Pop(2);	// !!! (2);
	
	m_pSingleListBox->ActivateL();
	// 	m_pListBox->MakeVisible(ETrue);
	m_pSingleListBox->SetFocus( ETrue );
	//	m_pListBox->DrawNow();	
	//End Single ListBox

    SetRect(aRect);
    ActivateL();
    }

// Destructor
CSingleListContainer::~CSingleListContainer()
    {
	MEM_FREE(m_pSingleListBox);
	MEM_FREE(m_pListBoxArray);
    }

// ---------------------------------------------------------
// CSingleListContainer::FocusTo(TInt aCommand)
// Change foccused control.
// (other items were commented in a header).
// ---------------------------------------------------------
//

void CSingleListContainer::FocusTo(TInt aCommand)
    {
    }

// ---------------------------------------------------------
// CSingleListContainer::SizeChanged()
// Called by framework when the view size is changed
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CSingleListContainer::SizeChanged()
    {
	if (m_pSingleListBox)
	{
		m_pSingleListBox->SetRect(Rect());
	}
    }

// ---------------------------------------------------------
// CSingleListContainer::CountComponentControls() const
// (other items were commented in a header).
// ---------------------------------------------------------
//
TInt CSingleListContainer::CountComponentControls() const
    {
		//return 0; // return nbr of controls inside this container
		return 1;
    }

// ---------------------------------------------------------
// CSingleListContainer::ComponentControl(TInt aIndex) const
// (other items were commented in a header).
// ---------------------------------------------------------
//
CCoeControl* CSingleListContainer::ComponentControl(TInt aIndex) const
    {
		return m_pSingleListBox;//return NULL;
    }

// ---------------------------------------------------------
// CSingleListContainer::Draw(const TRect& aRect) const
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CSingleListContainer::Draw(const TRect& aRect) const
    {
    CWindowGc& gc = SystemGc();
    gc.SetPenStyle(CGraphicsContext::ENullPen);
    gc.SetBrushColor(KRgbGray);
    gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
    gc.DrawRect(aRect);
    }

// ---------------------------------------------------------
// CSingleListContainer::OfferKeyEventL(...)
// Notify key events to editors.
// (other items were commented in a header).
// ---------------------------------------------------------
//
TKeyResponse CSingleListContainer::OfferKeyEventL(
    const TKeyEvent& aKeyEvent, TEventCode aType)
	{
		return EKeyWasNotConsumed;
	}


// ---------------------------------------------------------
// CSingleListContainer::HandleControlEventL(
//     CCoeControl* aControl,TCoeEvent aEventType)
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CSingleListContainer::HandleControlEventL(
    CCoeControl* /*aControl*/,TCoeEvent /*aEventType*/)
    {
    }


// append items to the listbox
void CSingleListContainer::AddInfoToList(TInt aIndex, const TDesC& aText)
{
	TBuf<64> sBuf;
	sBuf.AppendNum(aIndex);
	sBuf.Append(_L("\t"));
	sBuf.Append(aText);
	
	m_pListBoxArray->AppendL(sBuf);
	
	// update listbox
	m_pSingleListBox->HandleItemAdditionL();
}


// End of File