From Forum Nokia Wiki

Class CEikTextButton provides functionality to create button on S60 3rd Edition phones. This is a simple control like CEikEdwin and CEikLabel and you can implement it in your container as follows.

Header Required:

#include <eikcmbut.h>

Library needed:

LIBRARY avkon.lib eikcoctl.lib

Required capabilities:

None

Change in header file.

//Derive your container/View class from MCoeControlObserver.
//override following functions.
protected:
		TInt CountComponentControls() const;
		CCoeControl* ComponentControl(TInt aIndex) const;
		TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType);
 
	protected: // MCoeControlObserver
		void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);

Change in .cpp file.

void CHelloWorldAppView::ConstructL(const TRect& aRect)
{
	// Create a window for this application view
	CreateWindowL();
	// iButtonControl is pointer of type CEikTextButton;
	iButtonControl = new(ELeave) CEikTextButton;
	iButtonControl->SetContainerWindowL(*this);
	_LIT(KText, "Testing Button");
	iButtonControl->SetTextL(KText);
	iButtonControl->SetFocus(ETrue);
	iButtonControl->SetObserver(this);
	iButtonControl->SetRect(TRect(5,5,250,50)); //or u can set it in your SizeChanged() method.
	SetRect(aRect);
	ActivateL();
}
 
TInt CHelloWorldAppView::CountComponentControls() const
{
    return 1;
}
 
CCoeControl* CHelloWorldAppView::ComponentControl(TInt aIndex) const
{
    switch(aIndex)
        {
        case 0:
          {
            return iButtonControl;
            break;
          }
        default:
          {
            break;
          }
     }
}
 
TKeyResponse CHelloWorldAppView::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
{
	TKeyResponse response = EKeyWasNotConsumed;
 
	if((iButtonControl)&&(aKeyEvent.iScanCode==167))
		{
		response = EKeyWasConsumed;
		CEikButtonBase::TState state = CEikButtonBase::ESet;
		if(aType==EEventKeyDown)
			{
			state = CEikButtonBase::ESet;
			}
		else if(aType==EEventKeyUp)
			{
			state = CEikButtonBase::EClear;
			}
		iButtonControl->SetState(state);
		iButtonControl->DrawDeferred();
		}
	if(response == EKeyWasNotConsumed)
	{
	response = CCoeControl::OfferKeyEventL(aKeyEvent, aType);
	}
 
	return response;
}
 
// MCoeControlObserver
void CHelloWorldAppView::HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType)
{
      if((aControl==iButtonControl)&&(aEventType==EEventStateChanged))
	{
		CEikButtonBase::TState state = iButtonControl->State();
	}
}

Source Code:

Full example: Helloworldbasic(CEikTextButton).zip

Note: the CEikTextButton seems not working well with touch operations, so I extended it a little bit to support both confirm key events and pointer events, see the new example: Helloworldbasic(MyTextButton).zip

Screenshots: