Grid and Scrollbars

[vmlf]

Hi.

I created a view with a grid of icons, following the grid sample, but when I add more items than the grid can show, it scrolls but the scroll arrows don't show up.

I check the grid sample and there is one view where the arrows appear, so it is possible to have them, but from what I can see in the code there is nothing special to make them appear.

Anyone with the same problems (and maybe a solution)?

Regards,
Vitor Fernandes

[vmlf]

Finally got it. I was calling two methods in the wrong order.

You have to call SetMopParent() before ConstructL() on the container in the view class, i.e.:

iContainer = new (ELeave) CBTMenuMainContainer(this);
iContainer->SetMopParent(this);
iContainer->ConstructL(ClientRect());

Regards,
Vitor Fernandes

[flicker82]

hi vitor! and everyone!

The scrollbars in my grid do not get displayed. I have an AppUi, a View, and a Container. I have SetMopParent on my container but still, no scrollbars.

In my AppUi, i have:

void CSimpleGridAppUi::ConstructL()
	{
	BaseConstructL();

	CSimpleGridView* gridView = new (ELeave) CSimpleGridView();
	CleanupStack::PushL(gridView);
	gridView->ConstructL();
	CleanupStack::Pop();
	AddViewL(gridView);
	
	ActivateLocalViewL(gridView->Id());
	}

In my View, i have:

void CSimpleGridView::DoActivateL(const TVwsViewId& /*aPrevViewId*/, TUid /*aCustomMessageId*/, const TDesC8& /*aCustomMessage*/)
	{
	if (!iView)
		{
		iView = new (ELeave) CSimpleGridContainer;
		iView->SetMopParent(this);
		iView->ConstructL(ClientRect());
		AppUi()->AddToStackL(*this, iView);
		}
	}

In my Container, i have:

void CSimpleGridContainer::ConstructL(const TRect& aRect)
	{
	CreateWindowL();

	// Construct the grid
	iGamesGrid = new (ELeave) CAknGrid;
	iGamesGrid->SetContainerWindowL(*this);
	iGamesGrid->UpdateScrollBarsL();
	// Observe the grid
	iGridM = new (ELeave) CAknGridM;
	
	iGamesGrid->SetModel(iGridM);
	iGamesGrid->ConstructL(this, EAknListBoxSelectionGrid);
	iVerticalOrientation = ETrue;
	iTopToBottom = ETrue;
	iLeftToRight = ETrue;
	iNumOfColumns = 3;
	iNumOfRows = 3;
	iNumOfItems = -1;
	iVerticalScrollingType = CAknGridView::EScrollIncrementLineAndLoops;
	iHorizontalScrollingType = CAknGridView::EScrollIncrementLineAndLoops;
	
	TBuf<10> emptyText;
	emptyText.Copy(_L("Empty!"));
	iGamesGrid->SetEmptyGridTextL(emptyText);
	iGamesGrid->SetRect(aRect);
	iSizeOfItems.iWidth = (aRect.iBr.iX - aRect.iTl.iX) / iNumOfColumns;
	iSizeOfItems.iHeight = (aRect.iBr.iY - aRect.iTl.iY) / iNumOfRows;
	SetGridLayoutL();
	
	//create resource for grid (do not load from the HRF file)
	iIcons = new (ELeave) CAknIconArray(8);
	CleanupStack::PushL(iIcons);
	iGamesGrid->ItemDrawer()->FormattedCellData()->SetIconArrayL(iIcons);
	CleanupStack::Pop(iIcons);
	
	SetRect(aRect);
	ActivateL();
	
	iGamesGrid->MakeVisible(ETrue);
	iGamesGrid->SetFocus(ETrue);
	iGamesGrid->ActivateL();
	iGamesGrid->DrawNow();
	
	iFileSaver = CMdaImageBitmapToFileUtility::NewL(*this);
	ListFiles(ELoad);
	}

void CSimpleGridContainer::SizeChanged()
	{
	// Do not use MinimumSize() here as it does not work when scrolling
	// through the grid
	if (iGamesGrid)
		{
		iGamesGrid->SetExtent (KGridPosition,Rect().Size());
		}
	}

Please help, because i have no idea why the scrollbar doesnt get displayed. :( I could send the whole project if you want.. thank you very much..

[gowthamyemme]

Can you mail me the code at gowtham.yemme@sbcglobal.net and i will look into it and let you know since it is not clear from what you mentioned

Gowtham

[Symbian_Challenge_0418]

Hi;

I have the same problem with a scrollbar in a RichTextEditor not showing, althought its configuredb to show the scrollbar.

I took it directly from the RichTextEditorExample with Series60Ex.

The only major change was I changed the app to a view-container archtecture instead of traditional.

Larry

[flicker82]

that was what i did also, i changed it to a view-container architecture, and then the scrollbar disappeared. i still haven't got a solution to this, by the way.

[Symbian_Challenge_0418]

Hi,
thanks for responding to me.

Its strange that this seems something so difficult to solve. Surely many developers have done the same in the view model?

anyway, gonna tray some info I found at this thread:
http://discussion.forum.nokia.com/fo...2AScrollbar%2A

Else try good old Symbian Hacking... dont feel like rewriting my own Custom Controls though :)

Larry

[goready@163.com]

I have the same problem with a scrollbar in a AknSingleGraphicStyleListBox not showing,.I followed the steps of the listbox example in symbian sdk 6.1 for vc edition that display scrollbar very well . anyone has a idea?