symbian OS:解决S60列表框下上滚动出现列表项覆盖，失去焦点的列表项仍高亮的有关问题

symbian OS:解决S60列表框上下滚动出现列表项覆盖，失去焦点的列表项仍高亮的问题

这两天弄个简单的s60列表框。没想到出现以下的意外：

第一个图正常显示，第二个图，按下down键后，焦点下移，但是前一个列表项仍高光。

 

第三个。列表项滚动发生覆盖。

 

原因查出来了：

就是它：

 

BaseConstructL(EAknEnableSkin);

采用的是“基于控件的传统的symbianOS 架构。”

说白了，就是给控件找个容器装起来。容器在UI里建立。

上代码吧：

//ebooks.h

/*
 * ListBox.h
 *
 *  Created on: 2012-10-9
 *      Author: Administrator
 */

#ifndef LISTBOX_H_
#define LISTBOX_H_








#include <akniconarray.h> // CAknIcon
#include <aknlists.h> // CAknSingleStyleListBox
#include <barsread.h> // TResource Reader
#include <e32def.h> // STATIC_CAST
#include <eikclbd.h> // CColumnListBoxData
#include <eikmenub.h> // CEikMenuBar
#include <DynamicList.mbg> // icons
#include <ebooks_0xE4700052.rsg> // R_DYNAMICLIST_SAVED_GAMES_LISTBOX
#include <stringloader.h> // StringLoader
#include <uikon.hrh> // TKeyCode #defines
#include <badesca.h> // CDesCArray
#include <coecntrl.h> // CCoeControl
#include <eiklbo.h> // MEikListBoxObserver
#include <UTF.H>
#include<EscapeUtils.h>
#include <charconv.h>
#include <aknlists.h>
#include <aknview.h>
class CAknColumnListBox;
class ListBox: public CCoeControl, MEikListBoxObserver
	{
public:

	virtual ~ListBox();
	
	static ListBox* NewL(const TRect& aRect);
		static ListBox* NewLC(const TRect& aRect);
private:

	void ConstructL(const TRect& aRect);
	void HandleListBoxEventL(CEikListBox* aListBox, TListBoxEvent aListBoxEvent);
	void AddInfoToList(TInt aIndex, const TDesC& aText);
private: // from CoeControl

	void SizeChanged();
	TInt CountComponentControls() const;
	CCoeControl* ComponentControl(TInt aIndex) const;
	void Draw(const TRect& aRect) const;
	TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);
private:
	//CAknSingleStyleListBox* iListBox;
	CEikColumnListBox* iListBox;
	CDesCArrayFlat*	iArray;
	};

#endif /* LISTBOX_H_ */

//ebooks.cpp

/*
 * ListBox.cpp
 *
 *  Created on: 2012-10-9
 *      Author: Administrator
 */

#include "ListBox.h"
#include <akniconarray.h> // CAknIcon
#include <aknlists.h> // CAknSingleStyleListBox
#include <barsread.h> // TResource Reader
#include <e32def.h> // STATIC_CAST
#include <eikclbd.h> // CColumnListBoxData
#include <eikmenub.h> // CEikMenuBar

#include <ebooks_0xE4700052.rsg> // R_DYNAMICLIST_SAVED_GAMES_LISTBOX
#include <stringloader.h> // StringLoader
#include <uikon.hrh> // TKeyCode #defines
#define KListPosition TPoint(0,0)


ListBox::~ListBox()
	{
	// TODO Auto-generated destructor stub
	
	delete iListBox;
	delete iArray;
	}
void ListBox::ConstructL(const TRect& aRect)
	{
	// CreateWindowL();
	 
	// CreateWindowL();
	   
	    //add your code here ...

	    //construct a listbox
	  /*  iListBox = new(ELeave) CAknSingleStyleListBox;
	    iListBox->SetContainerWindowL( *this);
	    iListBox->SetListBoxObserver(this);
	    iListBox->ConstructL(this,EAknListBoxSelectionList|EAknListBoxLoopScrolling);
	       
	    
	    
	    
	    
	    iListBox->CreateScrollBarFrameL(ETrue);
	    iListBox->ScrollBarFrame()->SetScrollBarVisibilityL(CEikScrollBarFrame::EOn,CEikScrollBarFrame::EOn);
	    iListBox->ItemDrawer()->ColumnData()->EnableMarqueeL(ETrue);
	    
	    iListBox->Model()->SetOwnershipType( ELbmOwnsItemArray );
	        iListBox->ActivateL();

	        CDesCArray* items = static_cast<CDesCArray*>(iListBox->Model()->ItemTextArray());
	    //以下是要具体显示在界面上的内容，根据你的需要可以进行修改，如从FS中读出某个文件夹下的文件列表
	        items->AppendL(_L("\tData Structure"));
	        items->AppendL(_L("\tBusiness English"));
	        items->AppendL(_L("\tWeb Programming"));
	        items->AppendL(_L("\tComputer Networks"));

	        iListBox->HandleItemAdditionL();
	        iListBox->SetCurrentItemIndex(0);
	        iListBox->DrawNow(); */
	 
	 CreateWindowL();

	 	iListBox = new(ELeave)  CAknSingleNumberStyleListBox();
	 	CleanupStack::PushL(iListBox);
	     iListBox->ConstructL(this, EAknListBoxMarkableList | EAknListBoxMultiselectionList);
	     iListBox->SetContainerWindowL(*this);
	 	iListBox->SetRect(aRect);

	     iListBox->CreateScrollBarFrameL(ETrue);    iListBox->ScrollBarFrame()->SetScrollBarVisibilityL(CEikScrollBarFrame::EOn,CEikScrollBarFrame::EAuto);
	     
	 	iArray = new (ELeave) CDesCArrayFlat(10);
	 	CleanupStack::PushL(iArray);
	 	CTextListBoxModel* model = iListBox->Model();
	 	model->SetItemTextArray( iArray );
	 	model->SetOwnershipType(ELbmDoesNotOwnItemArray);
	 	CleanupStack::Pop(2);	// !!! (2);
		TBuf<32> strDate;
		strDate.Append(_L("hello list"));
		TInt zero=0;
		TInt one=1;
		
		AddInfoToList(zero, strDate);
		AddInfoToList(one, strDate);
		AddInfoToList(2, strDate);
		AddInfoToList(3, strDate);
		AddInfoToList(4, strDate);
		AddInfoToList(5, strDate);
		AddInfoToList(6, strDate);
		AddInfoToList(7, strDate);
		AddInfoToList(8, strDate);
		AddInfoToList(9, strDate);
		AddInfoToList(10, strDate);
		

	 	
	 	iListBox->ActivateL();
	 	// 	m_pListBox->MakeVisible(ETrue);
	 	iListBox->SetFocus( ETrue );
	 	//	m_pListBox->DrawNow();	
	 	//End Single ListBox

	     SetRect(aRect);
	     ActivateL();



	
	}
ListBox* ListBox::NewL(const TRect& aRect)
	{
	ListBox* self = ListBox::NewLC(aRect);
	CleanupStack::Pop(self);
	return self;
	}

ListBox* ListBox::NewLC(const TRect& aRect)
	{
	ListBox* self = new (ELeave) ListBox;
	CleanupStack::PushL(self);
	self->ConstructL(aRect);
	return self;
	}

/**
*	
* Called by framework when the view size is changed.  Resizes the
* iLabel accordingly.
*
*/
void ListBox::SizeChanged()
	{
	//iListBox->SetExtent (KListPosition, iListBox->MinimumSize());
	
	 //iListBox->SetExtent(TPoint(20,20),TSize(200,300));
	   // DrawNow();
	
 

    if (iListBox)
        {
    	iListBox->SetRect(Rect());
       // iItemList->ListBox()->SetRect(Rect());
        }
	}

/**
* Called by the framework in compound controls	
* @return The number of controls in this CDynamicListContainer
*/
TInt ListBox::CountComponentControls() const
	{
	return 1; // return number of controls inside this container
	}

/**
* Called by the framework in compound controls	
* @param The index of the control to return
* @return The control for aIndex
*/
CCoeControl* ListBox::ComponentControl(TInt aIndex) const
	{
	switch (aIndex)
		{
		case 0:
			return iListBox;
		default:
			return NULL;
		}
	}

/**
* Called by the framework to draw this control.  Clears the area in 
* aRect.
* @param aRect in which to draw
*/
void ListBox::Draw(const TRect& aRect) const
	{
	//CWindowGc& gc = SystemGc();
	//gc.Clear(aRect);
	
	
    CWindowGc& gc = SystemGc();
    
    // Gets the control's extent
    TRect rect = Rect();
    
    // Clears the screen
    gc.Clear(rect);

	
	
	}
void ListBox::HandleListBoxEventL(CEikListBox* /*aListBox*/, TListBoxEvent aListBoxEvent)
	{
	
	// if the Select Key has been pressed
	if ((aListBoxEvent == MEikListBoxObserver::EEventEnterKeyPressed) ||
		(aListBoxEvent == MEikListBoxObserver::EEventItemClicked))
		{
			//PlaySelectedGame();
		/*TBuf<256> aResult;
		TBuf<256> afterResult;
		//iListBox=iPalmLawListBoxRuleDir->ListBox();
		TInt index =iSavedGamesListBox->CurrentItemIndex(); // 获得当前列表项index

		// 取得列表项的值
		GetSelectedItemsLC(iSavedGamesListBox,aResult, index);
		aResult.TrimLeft();  // 去左空格
		//afterResult.Copy(aResult.Mid(2));
		//afterResult.Append(aResult.Mid(2));
		//_LIT(fullpath,"C:\\");
		//aResult.Copy(fullpath);
		//获取目录项结束
		CTextListBoxModel* model = iSavedGamesListBox->Model();  // not taking ownership
			model->SetOwnershipType (ELbmOwnsItemArray);
		CDesCArray* savedGamesArray = STATIC_CAST(CDesCArray*, model->ItemTextArray());
		
		
		savedGamesArray->Reset();
		GetFileListAndSubDirList(aResult,*savedGamesArray);
		
		
		iSavedGamesListBox->HandleItemAdditionL();
			iSavedGamesListBox->SetFocus( ETrue );
			//iSavedGamesListBox->SetCurrentItemIndexAndDraw(appView->iListIndex);
			iSavedGamesListBox->ActivateL();
		   

			//iSavedGamesListBox->DrawDeferred();
			iSavedGamesListBox->DrawNow();*/
			
			
		
		
		}
	}

/**
* Called by the framework whenever a key event occurs.	
* Passes the key event to the saved games list if it is not null, otherwise returns
* EKeyWasNotConsumed
* @param aKeyEvent the Key event which occured, e.g. select key pressed
* @param aType the type of Key event which occurred, e.g. key up, key down
* @return TKeyResponse EKeyWasNotConsumed if the key was not processed, EKeyWasConsumed if it was
*/
TKeyResponse ListBox::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
	{
    if(aType != EEventKey)
        {
        return EKeyWasNotConsumed;
        }    
    else if(iListBox)
        {
        return iListBox->OfferKeyEventL( aKeyEvent, aType );
        }
    else
        {
        return EKeyWasNotConsumed;
        }
	
	
	}

void ListBox::AddInfoToList(TInt aIndex, const TDesC& aText)
{
	TBuf<64> sBuf;
	sBuf.AppendNum(aIndex);
	sBuf.Append(_L("\t"));
	sBuf.Append(aText);
	
	iArray->AppendL(sBuf);
	
	// update listbox
	iListBox->HandleItemAdditionL();
}

APPUI.h中加入容器作为它的成员变量

	ListBox* listbox_container;

APPUI.CPP 中在::ConstructL()中进行注册。

BaseConstructL(EAknEnableSkin);

listbox_container=ListBox::NewL(ClientRect());
 listbox_container->SetMopParent(this);
 //listbox_container->s
 AddToStackL(listbox_container);