hellocontainer.cpp

这是一个关于Symbian Gird控件的程序

#include <gulicon.h>
#include <aknutils.h>
#include <avkon.hrh>
#include <eiklabel.h>
#include <aknlists.h>


#include "HelloContainer.h"

#define MEM_FREE(a) if(a) {delete a; a=NULL;}

CHelloContainer::CHelloContainer()
{
	//指针初始化
	iHelpLabel		= NULL;
	iSingleList		= NULL;
	iListBoxItem	= NULL;
}

// EPOC default constructor can leave.
void CHelloContainer::ConstructL(const TRect& aRect)
{
    CreateWindowL();	
    SetRect( aRect );
	
// 	//创建Label对象
// 	iHelpLabel = new(ELeave) CEikLabel;
// 	//设置container指针
// 	iHelpLabel->SetContainerWindowL(*this);
// 	//设置显示的信息
// 	iHelpLabel->SetTextL(_L("Good Soft!"));
// 	//设置显示的位置
// 	iHelpLabel->SetExtent(TPoint(0,0), aRect.Size());

//
	//动态创建listbox
	iSingleList = new( ELeave ) CAknSingleNumberStyleListBox; 
	iSingleList->SetContainerWindowL( *this ); 
	iSingleList->ConstructL( this, EAknListBoxSelectionList);
	//设置滚动条
	iSingleList ->CreateScrollBarFrameL(ETrue);
	iSingleList ->ScrollBarFrame()->SetScrollBarVisibilityL(
		CEikScrollBarFrame::EOff, CEikScrollBarFrame::EAuto);

	//创建列表项数组
	iListBoxItem = new (ELeave) CDesCArrayFlat(10); 
	CTextListBoxModel* model1 = iSingleList ->Model();
	model1->SetItemTextArray(iListBoxItem);
	model1->SetOwnershipType(ELbmOwnsItemArray);

	//设置Listbox显示位置和焦点
	iSingleList->SetExtent(TPoint(0, 0), aRect.Size());
	//设置Listbox焦点
	iSingleList->SetFocus(ETrue);
	ActivateL();
}

// destructor
CHelloContainer::~CHelloContainer()
{
	//析构Label指针
	MEM_FREE(iHelpLabel);
	MEM_FREE(iSingleList);
	//MEM_FREE(iListBoxItem);
}

void CHelloContainer::SizeChanged()
{
	if(iSingleList)
	{
		iSingleList->SetRect(Rect());
	}
}

// ---------------------------------------------------------
// CHelloContainer::CountComponentControls() const
// return the number of controls
// ---------------------------------------------------------
//
TInt CHelloContainer::CountComponentControls() const
{
	// return number of controls inside this container
	return 1; 
}

// ---------------------------------------------------------
// CHelloContainer::ComponentControl(TInt aIndex) const
// return the pointer to specified control.
// ---------------------------------------------------------
//
CCoeControl* CHelloContainer::ComponentControl( TInt /*aIndex*/ ) const
{
	return iSingleList;
}

// ---------------------------------------------------------
// CHelloContainer::Draw(const TRect& aRect) const
// handle the message when client region must be redrawn.
// ---------------------------------------------------------
//
void CHelloContainer::Draw( const TRect& /*aRect*/ ) const
{
	CWindowGc& gc = SystemGc();
// 	gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
// 	gc.SetBrushColor(KRgbRed);
// 	gc.DrawRect(Rect());
}

// ---------------------------------------------------------
// CAknExGridContainer::OfferKeyEventL(
//           const TKeyEvent& aKeyEvent, TEventCode aType )
// Handles the key events.
// ---------------------------------------------------------
//
TKeyResponse CHelloContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent, TEventCode aType )
{
	if(iSingleList)
	{//设置按键
		return iSingleList->OfferKeyEventL(aKeyEvent, aType);
	}
	return EKeyWasNotConsumed;
}

void CHelloContainer::SetTextToListL(TInt aNum, const TDesC& aBuf)
{
	TBuf<64> sBuf;
	sBuf.AppendNum(aNum);
	sBuf.Append(_L("\t"));
	sBuf.Append(aBuf);

	iListBoxItem->AppendL(sBuf);
	//通知Listbox添加内容
	iSingleList->HandleItemAdditionL();
}

TInt CHelloContainer::GetIndexFromList()
{
	if(!iSingleList)
		return -1;
	return iSingleList->CurrentItemIndex();
}

void CHelloContainer::DeleteTextFromList(TInt& aCurr)
{
	iListBoxItem->Delete(aCurr);
	//通知Listbox删除内容
	iSingleList->HandleItemRemovalL();
}

void CHelloContainer::DeleteTextFromList()
{
	iListBoxItem->Delete(0, iListBoxItem->Count());
	//通知Listbox删除内容
	iSingleList->HandleItemRemovalL();
}
// End of File