List Box application

[techietintu]

hi,
I have created list box with two items in it.Now on opening the first item i need another list with two or more items.But on opening the first item the application is getting closed.Please help..???
Here is my code..

/*****appview****/

CreateWindowL();
iListBox = new (ELeave) CAknDoubleGraphicStyleListBox;
iListBox->ConstructL(this, EAknListBoxSelectionList);
iListBox->SetContainerWindowL(*this);
iListBox->ActivateL();
iListBox->CreateScrollBarFrameL(ETrue);
iListBox->ScrollBarFrame()->SetScrollBarVisibilityL( CEikScrollBarFrame::EAuto, CEikScrollBarFrame::EAuto);

FillListBoxL();

iListBox->DrawNow();
SetRect( aRect );
ActivateL();

void CHelloWorldVarunAppView::FillListBoxL()
{
_LIT(KItemTextDouble1, "0\tFirst item\tHello");
_LIT(KItemTextDouble2, "1\tSecond item\thello1");

CDesCArrayFlat* array = new (ELeave) CDesCArrayFlat(2);

CleanupStack::PushL(array);
array->AppendL(KItemTextDouble1);
array->AppendL(KItemTextDouble2);
CleanupStack::Pop();

iListBox->Model()->SetItemTextArray(array);
CArrayPtr<CGulIcon>* iconArray = new (ELeave) CArrayPtrFlat<CGulIcon>(2);
CleanupStack::PushL(iconArray);
_LIT(KIconFile,"c:\\ImagePlugin.MBM");
iconArray->AppendL( iEikonEnv->CreateIconL( KIconFile,0,1) );
iconArray->AppendL( iEikonEnv->CreateIconL( KIconFile,6,7) );
iListBox->ItemDrawer()->ColumnData()->SetIconArray(iconArray);
CleanupStack::Pop();
iListBox->HandleItemAdditionL();


/****Appui****/

case EHelloWorldVarunCommand3:
{
if(iAppView -> CurrentItemIndex1()==0)
{
iAppView -> FillListBox0L();
//iAppView->iListBox->DrawNow();
}
else if(iAppView -> CurrentItemIndex1()==1)
{
iAppView -> FillListBox1L();
//iAppView->iListBox->DrawNow();
}


/*********AppView*******/

void CHelloWorldVarunAppView::FillListBox0L()
{
iListBox->Reset();
_LIT(KItemTextDouble3, "3\tThird item\tBox");
_LIT(KItemTextDouble4, "4\tFourth item\tBox1");

CDesCArrayFlat* array = new (ELeave) CDesCArrayFlat(2);

CleanupStack::PushL(array);
array->AppendL(KItemTextDouble3);
array->AppendL(KItemTextDouble4);
CleanupStack::Pop();

iListBox->Model()->SetItemTextArray(array);
iListBox->HandleItemAdditionL();
iListBox->DrawNow();
}


void CHelloWorldVarunAppView::FillListBox1L()
{
_LIT(KItemTextDouble5, "5\tFifth item\tBox3");
_LIT(KItemTextDouble6, "6\tSixth item\tBox4");

CDesCArrayFlat* array = new (ELeave) CDesCArrayFlat(2);

CleanupStack::PushL(array);
array->AppendL(KItemTextDouble5);
array->AppendL(KItemTextDouble6);
CleanupStack::Pop();

iListBox->Model()->SetItemTextArray(array);
iListBox->HandleItemAdditionL();
iListBox->DrawNow();
}

TInt CHelloWorldVarunAppView::CurrentItemIndex1()
{
TInt i = iListBox->CurrentItemIndex();
return i;
}

[ninidotnet]

Hi,

Try to use CurrentItemIndex() instead of CurrentItemIndex1(). I think you need to use multiview for your application.

[Symbian_Neil]

Run in debug mode and check if
TInt i = iListBox->CurrentItemIndex();
is having proper value when returning.
I have doubts of that segment and the following(in logical sequence)

good luck
cheers
Neil

[techietintu]

Hi Symbian_Neil,

TInt i = iListBox->CurrentItemIndex();
This is returning proper value.
The application is giving unhandled exception in the line iListBox->Drawnow(); of the function FillListBox0L(), if First Item is selected or iListBox->Drawnow(); of the function FillListBox1L() if the SecondItem is selected.

Thanks in advance.

Regards,
techietintu

[Symbian_Neil]

hi,

check out the multiview example given in S60 3rd Edition SDK for Symbian OS, Supporting Feature Pack 1, for C++. Maybe you will find your answer there.

Good luck
cheers
Neil

[techietintu]

Hi Symbian_Neil,

My first listbox is static and it is having 2 items so now I can implement multiview for this. If my first listbox is dynamic how will I know how many views to have in my application.
Is there any other way to get listbox on click of the item in the previous listbox.

Thanks in advance.

Regards,
techietintu

[Symbian_Neil]

Are you saying that you have some enteries(number of enteries unknown) and then when you select one entry, it should give more information regarding the same??

[techietintu]

Hi,

I have unknow number of entries(any number of entries varying from 3 to 8) in a listbox, on click of one item it should give me one more listbox(This may contain known number of entries).

Regards,
techietintu

[Symbian_Neil]

i dont know how relevant it is or maybe i am telling you something which you already..but approach would be :
you can use TKeyResponse..OfferKeyEventL
There you could do something like this :

TInt selInd = iBox->CurrentItemIndex();
TAgnEntryId selId = iIdArray->At(selInd);
ReadExtraTextL(selId);

Dont know if it works..or that would solve your problem...

But anyway ..goodluck
Cheers
Neil

[sudan]

Hi,

i am a symbian newbie. can you share the source code of creating a list box of 3 or 4 items.and
by selecting a item i should get another list box. i want the complete set of code including
(.cpp.h.rss.mmp.rls) say complete project of listbox. here i am using S60_3rd_FP1 and Carbide.c++
Thanks in advance

[Symbian_Neil]

Hi,

i am a symbian newbie. can you share the source code of creating a list box of 3 or 4 items.and
by selecting a item i should get another list box. i want the complete set of code including
(.cpp.h.rss.mmp.rls) say complete project of listbox. here i am using S60_3rd_FP1 and Carbide.c++
Thanks in advance

You have been replied by Tina and myself in this thread