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<concept id="GUID-CDBBD44F-C5F6-4D51-B4BA-23DA9BB58D69" xml:lang="en"><title>Creating

generic button</title><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>Create the <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknButton.html" format="application/java-archive"><codeph>CAknButton</codeph></xref> object

either dynamically from program code or from a resource structure. The constructed

button can then be used as a component control of a compound control.</p>

<p>Use the resource structures <codeph>AVKON_BUTTON</codeph>, <codeph>AVKON_BUTTON_STATE</codeph>,

and <codeph>AVKON_BUTTON_STATE_EXTENSION</codeph> for the button object (defined

in the file <codeph>eikon.rh</codeph>). The following example shows how to

construct a button with the help of a button resource. The button is placed

in a compound control (container) and it occupies the whole rectangle of the

container. The container is set as the observer of the button.</p>

<p><b>Example: Button resource</b></p>

<codeblock xml:space="preserve">RESOURCE AVKON_BUTTON r_myapp_button

    {

    flags  = KAknButtonTextLeft;

    states =

        {

        AVKON_BUTTON_STATE

            {

            txt = “Text”;

            helptxt = “Help text”;

            }

        };

    }

</codeblock>

<p><b>Example: Constructing button from resource</b></p>

<codeblock xml:space="preserve">void CMyButtonContainer::CreateButtonL()

    {

    CAknButton* iAknButton = CAknButton::NewL();

    iAknButton->ConstructFromResourceL(R_MYAPP_BUTTON);

    iAknButton->SetContainerWindowL(*this);

    iAknButton->SetRect(Rect());

    iAknButton->SetObserver(this);

    iAknButton->MakeVisible(ETrue);

    iAknButton->ActivateL();

    }

</codeblock>

<p><b>Example: Constructing button from program code</b></p>

<codeblock xml:space="preserve">void CMyButtonContainer::CreateButtonL()

    {

    HBufC* buttonText = StringLoader::LoadLC( R_MYAPP_TEXT );    

    HBufC* helpText   =

           StringLoader::LoadLC( R_MYAPP_HELPTEXT );

    CAknButton* iAknButton = CAknButton::NewL( 

        0, 0, 0, 0, 

        *buttonText, *helpText, KAknButtonTextLeft, 0);

    CleanupStack::PopAndDestroy( 2 );  // helpText, buttonText

    iAknButton->SetContainerWindowL(*this);

    iAknButton->SetRect(Rect());

    iAknButton->SetObserver(this);

    iAknButton->MakeVisible(ETrue);

    iAknButton->ActivateL();

    }

</codeblock>