how to show a list box in my application

[bharats]

hi 2 all

i have already existing my application n their is one more application of listbox.......i want to show that listbox in my applications front view.
my application is having no. of views.
i have added the container class of listbox appn in my application then made object of listboxcontainer for the view object which is setdefault. and builded but what is happening is i am getting a blank screen n after few seconds my emulator directly closes.

plz help me what should i do?

thanks n regards
bharat

[Priju Jacob Paul]

Hi,
could you please post some code so that we could understand how you are building your listbox.
please have a look onto this link.it tell you how to create a list box.

http://discussion.forum.nokia.com/fo...ad.php?t=92554

and also mention the panic code.

Priju

[bharats]

yah sure.

void CListDlgContainer::ConstructL(const TRect& aRect)
{
CreateWindowL();
SetRect(aRect);
ActivateL();

TInt openedItem(0);


HBufC* iconFileName;
iconFileName = StringLoader::LoadLC(R_ICON_FILE_NAME);

CAknSelectionListDialog* dialog = CAknSelectionListDialog::NewL(openedItem, NULL, 0);
dialog->PrepareLC (R_LISTDLG_DIALOG);

CArrayPtr<CGulIcon>* icons = new(ELeave) CAknIconArray(KNumberOfIcons);
CleanupStack::PushL(icons);
icons->AppendL(iEikonEnv->CreateIconL(*iconFileName, EMbmListdlg1player, EMbmListdlg1player_mask));
icons->AppendL(iEikonEnv->CreateIconL(*iconFileName, EMbmListdlg2player, EMbmListdlg2player_mask));

dialog->SetIconArrayL(icons); // transferring ownership of icons

CleanupStack::Pop(icons);


if (dialog->RunLD ())
{
PlaySelectedGame(openedItem);
}
CleanupStack::PopAndDestroy(iconFileName);

}

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

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

void CListDlgContainer::Draw(const TRect& aRect) const
{
CWindowGc& gc = SystemGc();
gc.Clear(aRect);
}

void CListDlgContainer::PlaySelectedGame(TInt /*aOpenedItem*/)
{
}


this is the code in my container.

[Priju Jacob Paul]

hi,
i dont find your HandleItemAdditionL()..that might be the reason y you find a empty list box..check the link that had been given below.it would help you to understand better.

Priju

[bharats]

hi priju

but this handleItemAdditionL is not present in my original application where actual listbox created n displayed.
n u r talking about which link?


qwiting ur valuable reply

bharat

[Priju Jacob Paul]

hi priju

but this handleItemAdditionL is not present in my original application where actual listbox created n displayed.

i dont understand you! which is your so said original application? after you append your items on the icon array you need to call HandleItemAdditionL() which you are not doing!! please go thru the listbox examples which comes in the sdk installation.

n u r talking about which link?

the link which comes along with the first reply.Wizard_hu__ has got the codes for you in that link..please have a look.

Priju

[bharats]

hi briju

sorry for inconvinience.
my original application means a listbox application example which i downloaded from somewhere.the code of container class of this listbox is posted already in lase reply and it is working fine here when i build and run it on emulator.
but when i am adding it in my new application where i wanna to show this listbox by default on my first screen of my application means i have simply added a new class which is container of the listbox application in my new application and in the doactivate method of my default view i made a object of this listbox container class but still it is showing a blank screen and after few seconds the emulator closes automatically with a error report.
so what could i do?

awaiting your valuable reply.
bharat

[Priju Jacob Paul]

have you made related modification in CountComponentControls() and in ComponentControl(TInt aIndex) const, if proper valvues are not mentioned here the controls wont be displayed.
what is ur error code that you get..

Priju

[wizard_hu_]

Hi Priju, thank you for remembering my example code :-)
However bharats is trying to use a CAknSelectionListDialog, which is a self-containing dialog (with PrepareLC-RunLD or ExecuteLD), thus it will not be a contained control of a view.
Unfortunately I do not know exactly how should it work, but I would guess that launching (and probably waiting for) a dialog has a bad place in the 2nd phase constructor of a CCoeControl; the crash is probably caused by a timeout in the Window or the View Server.

[bharats]

hi priju

i hav copied these functions in my listbox container and now i am getting a error

C:\SYMBIAN\7.0S\SERIES60_V20\SERIES60EX\SMS\GUI\SRC\Smsexamplelogview.cpp(100) : error C2664: 'void __thiscall CCoeAppUi::AddToStackL(class CCoeControl *,int,int)' : cannot convert parameter 1 from 'class CLogView' to 'class CCoeControl *'

in my examplelogview.cpp file where i am calling
AppUi()->AddToStackL(*this, iContainer);
in my DoactivateL function so what should i do now?

awiting your valuable reply

[Priju Jacob Paul]

From which class is your CLogView class derived from?
is it CAknView?

Priju

[bharats]

hi pirju
yah...