drawimagecontainer.h

symbian的画图程序

/*
============================================================================
 Name		: DrawImageContainer.h
 Author	  : caitong
 Copyright   : Your copyright notice
 Description : Declares container control for application.
============================================================================
*/

#ifndef DRAWIMAGECONTAINER_H
#define DRAWIMAGECONTAINER_H

// INCLUDES
#include <coecntrl.h>

// FORWARD DECLARATIONS
class CEikLabel;		// for example labels

// CLASS DECLARATION

/**
*  CDrawImageContainer  container control class.
*
*/
class CDrawImageContainer : public CCoeControl, MCoeControlObserver
	{
	public: // Constructors and destructor

		/**
		* EPOC default constructor.
		* @param aRect Frame rectangle for container.
		*/
		void ConstructL(const TRect& aRect);

		/**
		* Destructor.
		*/
		~CDrawImageContainer();

	public: // New functions

	public: // Functions from base classes

	private: // Functions from base classes

	   /**
		* From CoeControl,SizeChanged.
		*/
		void SizeChanged();

	   /**
		* From CoeControl,CountComponentControls.
		*/
		TInt CountComponentControls() const;

	   /**
		* From CCoeControl,ComponentControl.
		*/
		CCoeControl* ComponentControl(TInt aIndex) const;

	   /**
		* From CCoeControl,Draw.
		*/
		void Draw(const TRect& aRect) const;


		/**
		* From MCoeControlObserver
		* Acts upon changes in the hosted control's state.
		*
		* @param	aControl	The control changing its state
		* @param	aEventType	The type of control event
		*/
		void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);

	private: //data

		CEikLabel* iLabel;		  // example label
		CEikLabel* iToDoLabel;	  // example label
		CFbsBitmap* iBitmap;
		CFbsBitmap* iOffScrnBmp;
		CFbsBitmapDevice* iOffScrnBmpDevice;
		CFbsBitGc* iOffScrnContext;
	};

#endif