MFCPLAY.CPP

//==========================================================================; 
// 
//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR 
//  PURPOSE. 
// 
//  Copyright (c) 1992 - 1997  Microsoft Corporation.  All Rights Reserved. 
// 
//--------------------------------------------------------------------------; 
// 
// player.cpp : Defines the class behaviors for the application. 
// 
 
#include "stdafx.h" 
#include "mfcplay.h" 
 
#include "mainfrm.h" 
#include "mfcdoc.h" 
#include "mfcvw.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char BASED_CODE THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CPlayerApp 
 
BEGIN_MESSAGE_MAP(CPlayerApp, CWinApp) 
//{{AFX_MSG_MAP(CPlayerApp) 
ON_COMMAND(ID_APP_ABOUT, OnAppAbout) 
// NOTE - the ClassWizard will add and remove mapping macros here. 
//    DO NOT EDIT what you see in these blocks of generated code! 
//}}AFX_MSG_MAP 
// Standard file based document commands 
ON_COMMAND(ID_FILE_NEW, CWinApp::OnFileNew) 
ON_COMMAND(ID_FILE_OPEN, CWinApp::OnFileOpen) 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CPlayerApp construction 
 
CPlayerApp::CPlayerApp() 
{ 
// Place all significant initialization in InitInstance 
 
    m_pPlayerDoc = NULL; 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// The one and only CPlayerApp object 
 
CPlayerApp theApp; 
 
///////////////////////////////////////////////////////////////////////////// 
// CPlayerApp initialization 
 
BOOL CPlayerApp::InitInstance() 
{ 
// Standard initialization 
// If you are not using these features and wish to reduce the size 
//  of your final executable, you should remove from the following 
//  the specific initialization routines you do not need. 
 
Enable3dControls(); 
 
LoadStdProfileSettings( 0 );  // Load standard INI file options (including MRU) 
 
    // Initialize the quartz library 
    CoInitialize(NULL); 
 
// Register the application's document templates.  Document templates 
//  serve as the connection between documents, frame windows and views. 
 
CSingleDocTemplate* pDocTemplate; 
pDocTemplate = new CSingleDocTemplate( 
IDR_MAINFRAME, 
RUNTIME_CLASS(CPlayerDoc), 
RUNTIME_CLASS(CMainFrame),       // main SDI frame window 
RUNTIME_CLASS(CPlayerView)); 
AddDocTemplate(pDocTemplate); 
 
// Enable DDE Execute open 
EnableShellOpen(); 
RegisterShellFileTypes(); 
 
// simple command line parsing 
if (m_lpCmdLine[0] == '\0') 
{ 
// create a new (empty) document 
OnFileNew(); 
} 
else 
{ 
// open an existing document 
if(!OpenDocumentFile(m_lpCmdLine)) 
                    return FALSE; 
} 
 
// Enable drag/drop open 
m_pMainWnd->DragAcceptFiles(); 
 
return TRUE; 
} 
 
int CPlayerApp::ExitInstance( ) 
{ 
    CoUninitialize(); 
 
    return CWinApp::ExitInstance(); 
} 
 
void CPlayerApp::OnDocumentCreated( CPlayerDoc *pPlayerDoc ) 
{ 
    // Single documents only 
    // If you want to convert to an MDI you will need to hold a list 
    // of all created documents and change CPlayerApp::Run to build 
    // up a list of event handles to wait for. 
    ASSERT( m_pPlayerDoc == NULL ); 
    m_pPlayerDoc = pPlayerDoc; 
 
} 
 
void CPlayerApp::OnDocumentDestroyed( CPlayerDoc *pPlayerDoc ) 
{ 
    // Single documents only 
    ASSERT( m_pPlayerDoc == pPlayerDoc ); 
    m_pPlayerDoc = NULL; 
 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CAboutDlg dialog used for App About 
 
class CAboutDlg : public CDialog 
{ 
public: 
CAboutDlg(); 
 
// Dialog Data 
//{{AFX_DATA(CAboutDlg) 
enum { IDD = IDD_ABOUTBOX }; 
//}}AFX_DATA 
 
// Implementation 
protected: 
virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support 
//{{AFX_MSG(CAboutDlg) 
// No message handlers 
//}}AFX_MSG 
DECLARE_MESSAGE_MAP() 
}; 
 
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) 
{ 
//{{AFX_DATA_INIT(CAboutDlg) 
//}}AFX_DATA_INIT 
} 
 
void CAboutDlg::DoDataExchange(CDataExchange* pDX) 
{ 
CDialog::DoDataExchange(pDX); 
//{{AFX_DATA_MAP(CAboutDlg) 
//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) 
//{{AFX_MSG_MAP(CAboutDlg) 
// No message handlers 
//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
// App command to run the dialog 
void CPlayerApp::OnAppAbout() 
{ 
CAboutDlg aboutDlg; 
aboutDlg.DoModal(); 
} 
 
int CPlayerApp::Run() 
{   // Overridden to check for Graph events as well as messages 
 
if (m_pMainWnd == NULL && AfxOleGetUserCtrl()) 
{ 
// Not launched /Embedding or /Automation, but has no main window! 
TRACE0("Warning: m_pMainWnd is NULL in CPlayerApp::Run - quitting application.\n"); 
AfxPostQuitMessage(0); 
} 
 
    BOOL bIdle = TRUE; 
    LONG lIdleCount = 0; 
    HANDLE  ahObjects[1];               // handles that need to be waited on 
    const int cObjects = 1;             // no of objects that we are waiting on 
 
    // message loop lasts until we get a WM_QUIT message 
    // upon which we shall return from the function 
    while (TRUE) { 
 
        // If we don't have an event handle then process idle 
        // routines until a message arrives or until the idle routines 
        // stop (when we block until a message arrives). The graph event 
        // handle can only be created in response to a message 
        if( (ahObjects[ 0 ] = m_pPlayerDoc->GetGraphEventHandle()) == NULL ){ 
    while (    bIdle 
            && !::PeekMessage(&m_msgCur, NULL, NULL, NULL, PM_NOREMOVE)) 
    { 
    // call OnIdle while in bIdle state 
    if (!OnIdle(lIdleCount++)){ 
    bIdle = FALSE; 
                    WaitMessage(); 
                } 
    } 
        } else { 
            // wait for any message sent or posted to this queue 
            // or for a graph notification. If there is no message or event 
            // and we are idling then we process the idle time routines 
            DWORD result; 
 
            result = MsgWaitForMultipleObjects( cObjects 
                                              , ahObjects 
                                              , FALSE 
                                              , (bIdle ? 0 : INFINITE) 
                                              , QS_ALLINPUT 
                                              ); 
            if( result != (WAIT_OBJECT_0 + cObjects) ){ 
                // not a message... 
 
                if( result == WAIT_OBJECT_0 ) 
                    m_pPlayerDoc->OnGraphNotify(); 
 
                else if( result == WAIT_TIMEOUT ) 
                    if(!OnIdle(lIdleCount++)) 
                        bIdle = FALSE; 
 
                continue; 
            } 
        } 
 
 
        // When here, we either have a message or no event handle 
        // has been created yet. 
 
        // read all of the messages in this next loop 
        // removing each message as we read it 
do 
{ 
// pump message, but quit on WM_QUIT 
if (!PumpMessage()) 
return ExitInstance(); 
 
// reset "no idle" state after pumping "normal" message 
if (IsIdleMessage(&m_msgCur)) 
{ 
bIdle = TRUE; 
lIdleCount = 0; 
} 
 
} while (::PeekMessage(&m_msgCur, NULL, NULL, NULL, PM_NOREMOVE)); 
 
    } // end of the always while-loop 
 
 
} 
///////////////////////////////////////////////////////////////////////////// 
// CPlayerApp commands