I create a LISTBOX control in container, but listbox does not appear!

[aluzi]

I write code in my "CTestAppView"(inherit from "CCoeControl") ConstructL() funtion:

	// Create a window for this application view
	CreateWindowL();

	iListBox = new ( ELeave ) CAknSingleStyleListBox;
	iListBox->SetContainerWindowL( *this );
		{
		TResourceReader reader;
		iEikonEnv->CreateResourceReaderLC( reader, R_MY_LIST_BOX );
		iListBox->ConstructFromResourceL( reader );
		CleanupStack::PopAndDestroy(); // reader internal state
		}
	// the listbox owns the items in the list and will free them
	iListBox->Model()->SetOwnershipType( ELbmOwnsItemArray );
	
	iListBox->SetFocus( ETrue );

	// Set the windows size
	SetRect(aRect);

	// Activate the window, which makes it ready to be drawn
	ActivateL();

Run this program, the UI is blank white, the listbox created but I can't see it.....

[Kavit Patel]

Hi Aluzi,

Have you implemented
CountComponentControls() and ComponentControl(TInt aIndex) methods in your container class?

Regards,
Kavit.

[parthasaradhi6]

Hi please go througth below link,
http://wiki.forum.nokia.com/index.ph...using_resource

[eswar_illuri]

Hi,

Have you implemented virtual functions deriving from CCoeControl SizeChanged(),CountComponentControls() and ComponentControl() properly? Just check the listbox related documents in SDK doc. And lot of examples in forum nokia related to listbox, just go through it.

Regards,
Eswar

[chandrasekharreddy]

Hi,
pls go through the following link..
http://wiki.forum.nokia.com/index.ph...using_resource

By,
Chandra.

[mohd kashif]

I write code in my "CTestAppView"(inherit from "CCoeControl") ConstructL() funtion:

	// Create a window for this application view
	CreateWindowL();

	iListBox = new ( ELeave ) CAknSingleStyleListBox;
	iListBox->SetContainerWindowL( *this );
		{
		TResourceReader reader;
		iEikonEnv->CreateResourceReaderLC( reader, R_MY_LIST_BOX );
		iListBox->ConstructFromResourceL( reader );
		CleanupStack::PopAndDestroy(); // reader internal state
		}
	// the listbox owns the items in the list and will free them
	iListBox->Model()->SetOwnershipType( ELbmOwnsItemArray );
	
	iListBox->SetFocus( ETrue );

	// Set the windows size
	SetRect(aRect);

	// Activate the window, which makes it ready to be drawn
	ActivateL();

Run this program, the UI is blank white, the listbox created but I can't see it.....

Hi use this in SizeChanged()
{
iListBox->SetExtent(TPoint(0,0), iListBox->MinimumSize() );
}

May be helpfull for u.

regards
Md.kashif

[parag_purkar]

Hi ,
if you are using SetExtent

iListBox = new(ELeave) CAknSingleNumberStyleListBox();
iListBox->ConstructL(this);
iListBox->SetContainerWindowL(*this);
const TPoint aPoint(0,0);
const TSize aSize(180,160);
iListBox->SetExtent(aPoint,aSize);

Regards,
Parag Purkar

[mohd kashif]

Hi ,
1)Check for Item format of list box.
e.g

 _LIT(KListItemFormat,"%d\t%s\t\t");

2)if you are using SetExtent

iListBox = new(ELeave) CAknSingleNumberStyleListBox();
iListBox->ConstructL(this);
iListBox->SetContainerWindowL(*this);
const TPoint aPoint(0,0);
const TSize aSize(180,160);
iListBox->SetExtent(aPoint,aSize);

Regards,
Parag Purkar

hi Parag when in this thread use only CAknSingleStyleListBox, why u told format of CAknSingleNumberStyleListBox().Here no need for this format
_LIT(KListItemFormat,"%d\t%s\t\t");

Regards
Md.kashif

[parag_purkar]

Yes Kashif you are correct I made correction in my post