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<!DOCTYPE concept

  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

<concept id="GUID-8845AFD6-F238-43FF-BD7B-902CD8CD3973" xml:lang="en"><title>Showing

and hiding toolbar items</title><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>You can set toolbar items hidden or dimmed if a toolbar function is temporary

unavailable. </p>

<p>The example below shows how to set a button unavailable. In the example,

the boolean parameter <codeph>aHide</codeph> tells if the button should be

hidden or dimmed. </p>

<codeblock xml:space="preserve">void CMyAppView::SetButtonUnavailable( TBool aHide )

    {

    CAknToolbar* toolbar = Toolbar();

    if ( toolbar )

        {

        if ( aHide )

            {

            // To show the item again: 

            // toolbar->HideItem( KButtonId, EFalse, ETrue );

            toolbar->HideItem( KButtonId, ETrue, ETrue );

            }

        else

            {

            // To undim the item again:

            // toolbar->SetItemDimmed( KButtonId, EFalse, ETrue );

            toolbar->SetItemDimmed( KButtonId, ETrue, ETrue );

            }

        }

    }

</codeblock>