Developing MIDI applications with DirectMusic

/*
 ___  _   __   _   _   __     ____  __   _   _  ______ ____    __   _
|   \| | /  \ | \ | | /  \   / __/ /  \ | \ | |/_   _/|  _ \  /  \ | |
|  _/| || <> ||  \| ||    | | |   |    ||  \| |  | |  | | | ||    || |
| |  | || || || |\  ||    | | |___|    || |\  |  | |  | |/ / |    || |__
|_|  |_||_|| ||_| |_| \__/   \___/ \__/ |_| |_|  |_|  |_|\_\  \__/ |____|

  
	
////////////////////////////////////////////////////////////////////////
  
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
Copyright (c) 2002-2003 by Carlos Jim�nez de Parga  
All rights reserved.
For any suggestion or failure report, please contact me by:
e-mail: cjimenez@servitel.es
  
///////////////////////////////////////////////////////////////////////
Version: 0.5
Module : Key.h
Purpose: Header definition for the CKey class
Created: CJP / 02-05-2003
History: CJP / 03-25-2003 

*/

#if !defined(AFX_KEY_H__9605DF10_4F30_11D6_AA7A_00105A212DC5__INCLUDED_)
#define AFX_KEY_H__9605DF10_4F30_11D6_AA7A_00105A212DC5__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "Object.h"

const unsigned char NO_KEY		 = 0xff; // The 255 value means that no key was pressed 
const int WHITE_KEY_UNITS_WIDTH  = 4; // Width units of the white keys
const int WHITE_KEY_UNITS_HEIGHT = 16; // Height units of the white keys
const int BLACK_KEY_UNITS_WIDTH  = 2;  // Width units of the black keys
const int BLACK_KEY_UNITS_HEIGHT = 10; // Height units of the black keys

class CKey : public CObj 
{
protected:
	CDC *m_dc;				// Pointer to the memory DC
	unsigned char m_type;	// Type of key
	CRect m_CRect1,m_CRect2;	// CRect objects to define the geometry of the key	
	COLORREF KeyBlackOnColor,KeyBlackOffColor,KeyWhiteOnColor,KeyWhiteOffColor; // Colors of the keys
public:
	unsigned char m_note;	// Value of the note
	
	CKey();			 // Constructor
	virtual ~CKey(); // Destructor	
	void Initialize(CDC *dc,int px,int py,char type, int scale);	// Initializes the key
	void SetNote(unsigned char nNote); // Asigns the corresponding note to the key
	unsigned char IsPressed(int x,int y); // Detects if the key is under the position x,y
	void DrawasNormal(); // Draws the key as normal (not pressed)
	void DrawOnClick(); // Draws the key as pressed
	void Blit(int x,int y,CWnd *pWnd); // Blits the key in the window
	void SetColors(COLORREF KeyBlackDownColor,COLORREF KeyBlackUpColor,COLORREF KeyWhiteDownColor,COLORREF KeyWhiteUpColor); // Sets the colors of the keys
};

#endif // !defined(AFX_KEY_H__9605DF10_4F30_11D6_AA7A_00105A212DC5__INCLUDED_)