statusbarmsgwnd.cpp

visual c++ 实例编程

                    }
                }
                break;

                case STP_LEFT:
                {
                    ++m_nWndSize;
                    if (m_nWndSize > m_nWndHeight)
                    {
                        KillTimer(IDT_POP_WINDOW_TIMER);
                        SetTimer(IDT_SHOW_WINDOW_TIMER, m_nMsgTimeOut, NULL);
                    }
                    else
                    {
                        // Keep sizing the window, collpase it
                        SetWindowPos(
                            &wndTopMost,
                            m_nWndLeft + 10,
                            m_nWndBottom - m_nWndSize - 5, 
                            m_nWndWidth,
                            m_nWndSize,
                            SWP_SHOWWINDOW
                        );
                    }
                }
                break;
            }
        }
        break;

        case IDT_SHOW_WINDOW_TIMER:
        {
            KillTimer(IDT_SHOW_WINDOW_TIMER);
            SetTimer(IDT_COLLAPSE_WINDOW_TIMER, m_nMsgWndCreationDelay, NULL);
        }
        break;

        case IDT_COLLAPSE_WINDOW_TIMER:
        {
            switch (m_nStatusBarPos)
            {
                case STP_BOTTOM:
                case STP_RIGHT:
                {
                    --m_nWndSize;
                    if (m_nWndSize <= 0) 
                    {
                        KillTimer(IDT_COLLAPSE_WINDOW_TIMER);
                        m_nWndSize = 0;

                        delete this;
                    }
                    else
                    {
                        // Keep showing the window, collapse it
                        SetWindowPos(
                            &wndTopMost,
                            m_nWndLeft,
                            m_nWndBottom - m_nWndSize - 5, 
                            m_nWndWidth - 10,
                            m_nWndSize,
                            SWP_SHOWWINDOW
                        );      
                    }
                }
                break;

                case STP_TOP:
                {
                    --m_nWndSize;
                    if (m_nWndSize <= 0)
                    {
                        KillTimer(IDT_COLLAPSE_WINDOW_TIMER);
                        m_nWndSize = 0;

                        delete this;
                    }
                    else
                    {
                        SetWindowPos(
                            &wndTopMost,
                            m_nWndLeft,
                            m_nWndTop, 
                            m_nWndWidth - 10,
                            m_nWndSize,
                            SWP_SHOWWINDOW
                        );
                    }
                }
                break;

                case STP_LEFT:
                {
                    --m_nWndSize;
                    if (m_nWndSize <= 0)
                    {
                        KillTimer(IDT_COLLAPSE_WINDOW_TIMER);
                        m_nWndSize = 0;

                        delete this;
                    }
                    else
                    {
                        SetWindowPos(
                            &wndTopMost,
                            m_nWndLeft + 10,
                            m_nWndBottom - m_nWndSize - 5, 
                            m_nWndWidth,
                            m_nWndSize,
                            SWP_SHOWWINDOW
                        );
                    }
                }
                break;
            }
        }
        break;
    }

}




/*-----------------------------------------------------------------------------
 Function : CStatusBarMsgWnd::OnMouseHover(WPARAM, LPARAM)

 Created: Oct 17, 2001
 Author:  Prateek Kaul
 e-mail:  [e-mail]

 Abstract : Called by MFC when mouse is above a window

 Parameters : Look in MFC documentation

 Return Value : void

 Exceptions : none

 Revisions : none
----------------------------------------------------------------------------*/

LRESULT CStatusBarMsgWnd::OnMouseHover(WPARAM w, LPARAM l)
{
    if (m_bMouseOverWnd == FALSE) // Mouse was not on window
    {
        CClientDC dc(this);
        CFont* pFont = dc.SelectObject(&m_fontMessageUnderline);

        // Show with the message with the new font
        dc.DrawText(m_strMsg, &m_rectMsgRect, DT_WORDBREAK | DT_CENTER);
        
        dc.SelectObject(pFont); // restore the DC to its original state

        m_bMouseOverWnd = TRUE; // Mouse is now over window
    }
    return 0;
}



/*-----------------------------------------------------------------------------
 Function : CStatusBarMsgWnd::OnMouseLeaves(WPARAM, LPARAM)

 Created: Oct 17, 2001
 Author:  Prateek Kaul
 e-mail:  [e-mail]

 Abstract : Called by MFC when mouse is leaves a window

 Parameters : Look in MFC documentation

 Return Value : LRESULT

 Exceptions : none

 Revisions : none
----------------------------------------------------------------------------*/

LRESULT CStatusBarMsgWnd::OnMouseLeave(WPARAM w, LPARAM l)
{
    if (m_bMouseOverWnd) // Mouse was over window, now it is leaving
    {
        CClientDC dc(this);
        CFont* pFont = dc.SelectObject(&m_fontMessageNoUnderline);

        // Show with the message with the new font
        dc.DrawText(m_strMsg, &m_rectMsgRect, DT_WORDBREAK | DT_CENTER);

        dc.SelectObject(pFont); // Restore DC back to its original state

        m_bMouseOverWnd = FALSE; // Mouse is not over window
    }
    return 0;
}




/*-----------------------------------------------------------------------------
 Function : CStatusBarMsgWnd::OnSetCursor(WPARAM, LPARAM)

 Created: Oct 17, 2001
 Author:  Prateek Kaul
 e-mail:  [e-mail]

 Abstract : Called by MFC when mouse is moved on a window

 Parameters : Look in MFC documentation

 Return Value : BOOL

 Exceptions : none

 Revisions : none
----------------------------------------------------------------------------*/

BOOL CStatusBarMsgWnd::OnSetCursor(CWnd* pWnd , UINT nHitTest , UINT message)
{
    if (nHitTest == HTCLIENT)
    {
        ::SetCursor(m_hCursor);  // Set cursor to HAND type when mouse is over window

        return TRUE;
    }
    
    return CFrameWnd::OnSetCursor (pWnd, nHitTest, message);
}




/*-----------------------------------------------------------------------------
 Function : CStatusBarMsgWnd::OnDestroy()

 Created: Oct 17, 2001
 Author:  Prateek Kaul
 e-mail:  [e-mail]

 Abstract : Called by MFC when window is about to be destroyed and it becomes 
            already invisible

 Parameters : Look in MFC documentation

 Return Value : void

 Exceptions : none

 Revisions : none
----------------------------------------------------------------------------*/

void CStatusBarMsgWnd::OnDestroy(void)
{
    ::CloseHandle(m_hCursor); // Free the cursor as it is a shared resource..

    CFrameWnd::OnDestroy();
}




/*-----------------------------------------------------------------------------
 Function : CStatusBarMsgWnd::OnPaint()

 Created: Oct 17, 2001
 Author:  Prateek Kaul
 e-mail:  [e-mail]

 Abstract : Called by MFC when a window recives a WM_PAINT message

 Parameters : Look in MFC documentation

 Return Value : void

 Exceptions : none

 Revisions : none
----------------------------------------------------------------------------*/

void CStatusBarMsgWnd::OnPaint()
{
    CFont* pFont = NULL;
    CPaintDC dc(this);

    if (m_bMouseOverWnd)
    {
        pFont = dc.SelectObject(&m_fontMessageUnderline);
    }
    else
    {
        pFont = dc.SelectObject(&m_fontMessageNoUnderline);
    }

    // Show with the message with the new font
    dc.DrawText(m_strMsg, &m_rectMsgRect, DT_WORDBREAK | DT_CENTER);
    dc.SelectObject(pFont); // restore the DC to its original state
}




/*-----------------------------------------------------------------------------
 Function : CStatusBarMsgWnd::OnLButtonDown(UINT, CPoint)

 Created: Oct 17, 2001
 Author:  Prateek Kaul
 e-mail:  [e-mail]

 Abstract : Called by MFC when a window recives a WM_LBUTTONDOWN message

 Parameters : Look in MFC documentation

 Return Value : void

 Exceptions : none

 Revisions : none
----------------------------------------------------------------------------*/

void CStatusBarMsgWnd::OnLButtonDown(UINT nFlags, CPoint point)
{
    ::AfxMessageBox(_T("Hi boss"));
}




/*-----------------------------------------------------------------------------
 Function : CStatusBarMsgWnd::CreateObject()

 Created: Oct 13, 2001
 Author:  Prateek Kaul
 e-mail:  [e-mail]

 Abstract : Creates an CStatusBarMsgWnd, constructor is not public because we
            want to force heap creation for better response for the
            parent window. So we use SetTimer in PopWnd() and return. 
            So no blocking with Sleep() API.

 Parameters : 
    1. strMsg     -> Message to be shown in the window
    2. nWndWidth  -> Width of the message window
    3. nWndHeight -> Height if the message window
    4. nMsgTimeOut -> Seconds the window remains stationary
    5. nMsgWndCreationDelay -> Seconds in which the window gets shown
    4. pParent    -> Pointer to the parent window
    5  rectMsgRect -> Rectangle in the window where the message will be

 Return Value : none

 Exceptions : none

 Revisions : none
----------------------------------------------------------------------------*/

CStatusBarMsgWnd* CStatusBarMsgWnd::CreateObject(CString strMsg,
                                       unsigned int nWndWidth,
                                       unsigned int nWndHeight, 
                                       unsigned int nMsgTimeOut,         
                                       unsigned int nMsgWndCreationDelay, 
                                       CRect rectMsgRect,
                                       CWnd* pWndParent)
{
    CStatusBarMsgWnd* t_StatusBarMsgWnd = new CStatusBarMsgWnd(
                                                  strMsg,
                                                  nWndWidth,
                                                  nWndHeight, 
                                                  nMsgTimeOut,         
                                                  nMsgWndCreationDelay, 
                                                  rectMsgRect,
                                                  pWndParent
                                              );

    return (t_StatusBarMsgWnd);
}