mainfrm.cpp

这是MFC经典问答书的光盘内容

// MainFrm.cpp : implementation of the CMainFrame class
//

#include "stdafx.h"
#include "FullScreen.h"

#include "MainFrm.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMainFrame

IMPLEMENT_DYNAMIC(CMainFrame, CMDIFrameWnd)

BEGIN_MESSAGE_MAP(CMainFrame, CMDIFrameWnd)
	//{{AFX_MSG_MAP(CMainFrame)
	ON_WM_CREATE()
	ON_COMMAND(ID_VIEW_FULLSCREEN, OnViewFullScreen)
	ON_UPDATE_COMMAND_UI(ID_VIEW_FULLSCREEN, OnUpdateViewFullScreen)
	ON_WM_GETMINMAXINFO()
	ON_COMMAND(ID_VIEW_BACK_TO_NORMAL, OnViewBackToNormal)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

static UINT indicators[] =
{
	ID_SEPARATOR,           // status line indicator
	ID_INDICATOR_CAPS,
	ID_INDICATOR_NUM,
	ID_INDICATOR_SCRL,
};

/////////////////////////////////////////////////////////////////////////////
// CMainFrame construction/destruction

CMainFrame::CMainFrame()
{
	m_bFullScreen = FALSE;
	m_bWasZoomed = FALSE;
}

CMainFrame::~CMainFrame()
{
}

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CMDIFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	if (!m_wndToolBar.Create(this) ||
		!m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
	{
		TRACE0("Failed to create standard toolbar\n");
		return -1;      // fail to create
	}

	if (!m_wndTBdemo.Create(this, WS_CHILD | WS_VISIBLE | CBRS_TOP, IDR_DEMO_TOOLBAR) ||
		!m_wndTBdemo.LoadToolBar(IDR_DEMO_TOOLBAR))
	{
		TRACE0("Failed to create demo toolbar\n");
		return -1;      // fail to create
	}

	if (!m_wndStatusBar.Create(this) ||
		!m_wndStatusBar.SetIndicators(indicators,
		  sizeof(indicators)/sizeof(UINT)))
	{
		TRACE0("Failed to create status bar\n");
		return -1;      // fail to create
	}

	// Mainframe docking
	EnableDocking(CBRS_ALIGN_ANY);

	// Standard toolbar docking
	m_wndToolBar.SetBarStyle(m_wndToolBar.GetBarStyle() |
					CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);
	m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
	DockControlBar(&m_wndToolBar);

	// Demo toolbar docking
	m_wndTBdemo.SetBarStyle(m_wndTBdemo.GetBarStyle() |
					CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);
	m_wndTBdemo.EnableDocking(CBRS_ALIGN_ANY);
	DockControlBar(&m_wndTBdemo, AFX_IDW_DOCKBAR_LEFT);

	return 0;
}

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CMDIFrameWnd::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMainFrame diagnostics

#ifdef _DEBUG
void CMainFrame::AssertValid() const
{
	CMDIFrameWnd::AssertValid();
}

void CMainFrame::Dump(CDumpContext& dc) const
{
	CMDIFrameWnd::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers

void CMainFrame::OnViewFullScreen() 
{
	// 1 - Read the various system metrics
	int cyCaption = ::GetSystemMetrics( SM_CYCAPTION );
	int cxFrame = ::GetSystemMetrics( SM_CXFRAME );
	int cyFrame = ::GetSystemMetrics( SM_CYFRAME );
	int cxScreen = ::GetSystemMetrics( SM_CXSCREEN );
	int cyScreen = ::GetSystemMetrics( SM_CYSCREEN );
	int cyMenu = ::GetSystemMetrics( SM_CYMENU );

	// 2 - Toggle the current full-screen mode
	m_bFullScreen = !m_bFullScreen;

	// 3 - Go into full-screen mode or back into normal
	// Note: The following code works together with the
	// OnGetMinMaxInfo() function

	if( m_bFullScreen )
	{
		// 4 - Go from normal into full-screen mode

		m_bWasZoomed = IsZoomed();	// Store current state
		if( m_bWasZoomed )
		{
			// Go from maximized to full-screen mode
			// using SetWindowPos()
			SetWindowPos(	NULL,
							-cxFrame, -( cyFrame + cyCaption + cyMenu ),
							cxScreen + 2 * cxFrame,
							cyScreen + 2 * cyFrame + cyCaption + cyMenu,
							SWP_NOZORDER );
		}
		else
		{
			// Go from normal to full-screen mode
			// using ShowWindow()
			ShowWindow( SW_SHOWMAXIMIZED );
		}
	}
	else
	{
		// 5 - Restore the window to previous state
		// (can be either "normal" or "maximized")

		if( m_bWasZoomed )
		{
			// Restore to maximized state
			// using SetWindowPos()
			SetWindowPos(	NULL,
							-cxFrame, -cyFrame,
							cxScreen + 2 * cxFrame,
							cyScreen + 2 * cyFrame,
							SWP_NOZORDER );
		}
		else
		{
			// Restore to normal state
			// using ShowWindow()
			ShowWindow( SW_RESTORE );
		}
	}
}

void CMainFrame::OnUpdateViewFullScreen(CCmdUI* pCmdUI) 
{
	pCmdUI->SetCheck( m_bFullScreen );
}

void CMainFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) 
{
	// 1 - Read the various system metrics
	int cyCaption = ::GetSystemMetrics( SM_CYCAPTION );
	int cxFrame = ::GetSystemMetrics( SM_CXFRAME );
	int cyFrame = ::GetSystemMetrics( SM_CYFRAME );
	int cxScreen = ::GetSystemMetrics( SM_CXSCREEN );
	int cyScreen = ::GetSystemMetrics( SM_CYSCREEN );
	int cyMenu = ::GetSystemMetrics( SM_CYMENU );

	// 2 - Let the default window proc fill
	// the MINMAXINFO structure
	CMDIFrameWnd::OnGetMinMaxInfo(lpMMI);

	if( m_bFullScreen )
	{
		// 3 - Full-screen MinMaxInfo
		lpMMI->ptMaxPosition.y = -( cyFrame + cyCaption + cyMenu );
		lpMMI->ptMaxSize.y = lpMMI->ptMaxTrackSize.y =
			cyScreen + 2 * cyFrame + cyCaption + cyMenu;
	}
	else
	{
		// 4 - Normal MinMaxInfo
		lpMMI->ptMaxPosition.y = -cyFrame;
		lpMMI->ptMaxSize.y = lpMMI->ptMaxTrackSize.y = cyScreen + 2 * cyFrame;
	}

	lpMMI->ptMaxPosition.x = -cxFrame;
	lpMMI->ptMaxSize.x = lpMMI->ptMaxTrackSize.x = cxScreen + 2 * cxFrame;
}

void CMainFrame::OnViewBackToNormal() 
{
	if( m_bFullScreen )	// Only if already in full-screen
	{
		// Toggle view back to normal mode
		OnViewFullScreen();
	}
}