www.pudn.com > OSDemo.rar > BalloonTip.h

/******************************************************************************* 
File:        BalloonTip.h 
 
Description: This file contains the module for creating a a balloon tip which can 
             be shown anywhere on a parent window 
              
 
Created: Nov 1, 2001 
Author:  Prateek Kaul 
e-mail:  kaulpr@yahoo.com 
 
Compiler with version number : Visual C++ 6.0 
 
 
Copyright (c) 2001, Prateek Kaul 
All rights Reserved. 
 
The copyright to the computer program(s) herein is the property of Prateek Kaul 
The program(s) may be used and/or copied only with the written permission of  
Prateek Kaul or in accordance with the terms and conditions stipulated 
in the agreement/contract under which the program(s) have been supplied. 
********************************************************************************/ 
 
#ifndef _BALLOONTIP_H 
#define _BALLOONTIP_H 
 
#if _MSC_VER > 1000 
#pragma once 
#endif // _MSC_VER > 1000 
 
const int ID_TIMER = 100; 
 
/*--------------------------------------------------------------------------- 
 class CBalloonTip 
 
 Created: Nov 1, 2001 
 Author:  Prateek Kaul 
 e-mail:  kaulpr@yahoo.com 
 
 Abstract : For creating a balloon tip 
 
 Revisions :none. 
----------------------------------------------------------------------------*/ 
 
class CBalloonTip : public CFrameWnd 
{ 
    DECLARE_MESSAGE_MAP() 
 
public: 
	 
// Implementation 
 
    // Creates a new CBalloonTip Object 
    static CBalloonTip* Show( 
               CPoint pt,         // Point where the balloon tip will be   
               CSize size,        // Size of the balloon 
               CString strMessage,// Messsage to be shown 
               LOGFONT lf, // A LOGFONT structure from which the message font will created   
               UINT nSecs, // Seconds for which the balloon will be shown 
               BOOL bBalloonUp    // Is balloon show up or upside down? 
            ); 
 
    // Makes the window invisible, destroys, and releases resources, if required to destroy before 
    // the Timer ticks. 
    static void Hide(CBalloonTip* pBalloonTip);  
    static int nBalloonInstances; 
 
protected: 
	virtual void PostNcDestroy(); 
 
// Implementation 
 
  	CBalloonTip(CString strMessage, LOGFONT lf, BOOL bBalloonUp); 
    ~CBalloonTip(); 
    BOOL Create(CRect rect);       // Create the Windows(R) window, HANDLE etc ... 
    void MakeVisisble(UINT nSecs); // Show the balloon for nSecs Seconds 
 
// Overrides and messages 
	//{{AFX_MSG(CBalloonTip) 
	afx_msg void OnTimer(UINT nIDEvent); 
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point); 
	afx_msg void OnRButtonDown(UINT nFlags, CPoint point); 
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); 
	afx_msg void OnPaint(); 
	//}}AFX_MSG 
    virtual BOOL PreCreateWindow(CREATESTRUCT& cs); 
 
// Attributes 
    BOOL    m_bBalloonUp;   // Is balloon up or upside down 
	CRect   m_rectText;     // Rectabgle where the text will be in the balloon 
    CRect   m_rectWindow;   // Rectangle in which the balloon will be displayed in screen coordinates 
    CString m_strMessage;   // Message to be displayed in the balloon 
	CFont   m_fontBalloonText; // Font of the message 
	CRgn    m_rgnTip;          // The region of the tip 
	CRgn    m_rgnRoundRect;   // The region of the round rectangle   
    CWnd    m_wndInvisibleParent; // Invisible parent of this window, this avoids the balloon's 
                                  // appreance in the Taskbar 
}; 
 
#endif // _BALLOONTIP_H