winfrm.cpp

c语言编程软件vc6.0中文绿色版_vc6.0官方下载

	CWnd* pParentWnd,
	LPCTSTR lpszMenuName,
	DWORD dwExStyle,
	CCreateContext* pContext)
{
	HMENU hMenu = NULL;
	if (lpszMenuName != NULL)
	{
		// load in a menu that will get destroyed when window gets destroyed
		HINSTANCE hInst = AfxFindResourceHandle(lpszMenuName, RT_MENU);
		if ((hMenu = ::LoadMenu(hInst, lpszMenuName)) == NULL)
		{
			TRACE0("Warning: failed to load menu for CFrameWnd.\n");
			PostNcDestroy();            // perhaps delete the C++ object
			return FALSE;
		}
	}

	m_strTitle = lpszWindowName;    // save title for later

	if (!CreateEx(dwExStyle, lpszClassName, lpszWindowName, dwStyle,
		rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
		pParentWnd->GetSafeHwnd(), hMenu, (LPVOID)pContext))
	{
		TRACE0("Warning: failed to create CFrameWnd.\n");
		if (hMenu != NULL)
			DestroyMenu(hMenu);
		return FALSE;
	}

	return TRUE;
}

CWnd* CFrameWnd::CreateView(CCreateContext* pContext, UINT nID)
{
	ASSERT(m_hWnd != NULL);
	ASSERT(::IsWindow(m_hWnd));
	ASSERT(pContext != NULL);
	ASSERT(pContext->m_pNewViewClass != NULL);

	// Note: can be a CWnd with PostNcDestroy self cleanup
	CWnd* pView = (CWnd*)pContext->m_pNewViewClass->CreateObject();
	if (pView == NULL)
	{
		TRACE1("Warning: Dynamic create of view type %hs failed.\n",
			pContext->m_pNewViewClass->m_lpszClassName);
		return NULL;
	}
	ASSERT_KINDOF(CWnd, pView);

	// views are always created with a border!
	if (!pView->Create(NULL, NULL, AFX_WS_DEFAULT_VIEW,
		CRect(0,0,0,0), this, nID, pContext))
	{
		TRACE0("Warning: could not create view for frame.\n");
		return NULL;        // can't continue without a view
	}

	if (afxData.bWin4 && (pView->GetExStyle() & WS_EX_CLIENTEDGE))
	{
		// remove the 3d style from the frame, since the view is
		//  providing it.
		// make sure to recalc the non-client area
		ModifyStyleEx(WS_EX_CLIENTEDGE, 0, SWP_FRAMECHANGED);
	}
	return pView;
}

BOOL CFrameWnd::OnCreateClient(LPCREATESTRUCT, CCreateContext* pContext)
{
	// default create client will create a view if asked for it
	if (pContext != NULL && pContext->m_pNewViewClass != NULL)
	{
		if (CreateView(pContext, AFX_IDW_PANE_FIRST) == NULL)
			return FALSE;
	}
	return TRUE;
}

int CFrameWnd::OnCreate(LPCREATESTRUCT lpcs)
{
	CCreateContext* pContext = (CCreateContext*)lpcs->lpCreateParams;
	return OnCreateHelper(lpcs, pContext);
}

int CFrameWnd::OnCreateHelper(LPCREATESTRUCT lpcs, CCreateContext* pContext)
{
	if (CWnd::OnCreate(lpcs) == -1)
		return -1;

	// create special children first
	if (!OnCreateClient(lpcs, pContext))
	{
		TRACE0("Failed to create client pane/view for frame.\n");
		return -1;
	}

	// post message for initial message string
	PostMessage(WM_SETMESSAGESTRING, AFX_IDS_IDLEMESSAGE);

	// make sure the child windows have been properly sized
	RecalcLayout();

	return 0;   // create ok
}

LPCTSTR CFrameWnd::GetIconWndClass(DWORD dwDefaultStyle, UINT nIDResource)
{
	ASSERT_VALID_IDR(nIDResource);
	HINSTANCE hInst = AfxFindResourceHandle(
		MAKEINTRESOURCE(nIDResource), RT_GROUP_ICON);
	HICON hIcon = ::LoadIcon(hInst, MAKEINTRESOURCE(nIDResource));
	if (hIcon != NULL)
	{
		CREATESTRUCT cs;
		memset(&cs, 0, sizeof(CREATESTRUCT));
		cs.style = dwDefaultStyle;
		PreCreateWindow(cs);
			// will fill lpszClassName with default WNDCLASS name
			// ignore instance handle from PreCreateWindow.

		WNDCLASS wndcls;
		if (cs.lpszClass != NULL &&
			GetClassInfo(AfxGetInstanceHandle(), cs.lpszClass, &wndcls) &&
			wndcls.hIcon != hIcon)
		{
			// register a very similar WNDCLASS
			return AfxRegisterWndClass(wndcls.style,
				wndcls.hCursor, wndcls.hbrBackground, hIcon);
		}
	}
	return NULL;        // just use the default
}

BOOL CFrameWnd::LoadFrame(UINT nIDResource, DWORD dwDefaultStyle,
	CWnd* pParentWnd, CCreateContext* pContext)
{
	// only do this once
	ASSERT_VALID_IDR(nIDResource);
	ASSERT(m_nIDHelp == 0 || m_nIDHelp == nIDResource);

	m_nIDHelp = nIDResource;    // ID for help context (+HID_BASE_RESOURCE)

	CString strFullString;
	if (strFullString.LoadString(nIDResource))
		AfxExtractSubString(m_strTitle, strFullString, 0);    // first sub-string

	VERIFY(AfxDeferRegisterClass(AFX_WNDFRAMEORVIEW_REG));

	// attempt to create the window
	LPCTSTR lpszClass = GetIconWndClass(dwDefaultStyle, nIDResource);
	LPCTSTR lpszTitle = m_strTitle;
	if (!Create(lpszClass, lpszTitle, dwDefaultStyle, rectDefault,
	  pParentWnd, MAKEINTRESOURCE(nIDResource), 0L, pContext))
	{
		return FALSE;   // will self destruct on failure normally
	}

	// save the default menu handle
	ASSERT(m_hWnd != NULL);
	m_hMenuDefault = ::GetMenu(m_hWnd);

	// load accelerator resource
	LoadAccelTable(MAKEINTRESOURCE(nIDResource));

	if (pContext == NULL)   // send initial update
		SendMessageToDescendants(WM_INITIALUPDATE, 0, 0, TRUE, TRUE);

	return TRUE;
}

void CFrameWnd::OnUpdateFrameMenu(HMENU hMenuAlt)
{
	if (hMenuAlt == NULL)
	{
		// attempt to get default menu from document
		CDocument* pDoc = GetActiveDocument();
		if (pDoc != NULL)
			hMenuAlt = pDoc->GetDefaultMenu();
		// use default menu stored in frame if none from document
		if (hMenuAlt == NULL)
			hMenuAlt = m_hMenuDefault;
	}
	// finally, set the menu
	::SetMenu(m_hWnd, hMenuAlt);
}

void CFrameWnd::InitialUpdateFrame(CDocument* pDoc, BOOL bMakeVisible)
{
	// if the frame does not have an active view, set to first pane
	CView* pView = NULL;
	if (GetActiveView() == NULL)
	{
		CWnd* pWnd = GetDescendantWindow(AFX_IDW_PANE_FIRST, TRUE);
		if (pWnd != NULL && pWnd->IsKindOf(RUNTIME_CLASS(CView)))
		{
			pView = (CView*)pWnd;
			SetActiveView(pView, FALSE);
		}
	}

	if (bMakeVisible)
	{
		// send initial update to all views (and other controls) in the frame
		SendMessageToDescendants(WM_INITIALUPDATE, 0, 0, TRUE, TRUE);

		// give view a chance to save the focus (CFormView needs this)
		if (pView != NULL)
			pView->OnActivateFrame(WA_INACTIVE, this);

		// finally, activate the frame
		// (send the default show command unless the main desktop window)
		int nCmdShow = -1;      // default
		CWinApp* pApp = AfxGetApp();
		if (pApp != NULL && pApp->m_pMainWnd == this)
		{
			nCmdShow = pApp->m_nCmdShow; // use the parameter from WinMain
			pApp->m_nCmdShow = -1; // set to default after first time
		}
		ActivateFrame(nCmdShow);
		if (pView != NULL)
			pView->OnActivateView(TRUE, pView, pView);
	}

	// update frame counts and frame title (may already have been visible)
	if (pDoc != NULL)
		pDoc->UpdateFrameCounts();
	OnUpdateFrameTitle(TRUE);
}

/////////////////////////////////////////////////////////////////////////////
// CFrameWnd closing down

void CFrameWnd::OnClose()
{
	if (m_lpfnCloseProc != NULL && !(*m_lpfnCloseProc)(this))
		return;

	// Note: only queries the active document
	CDocument* pDocument = GetActiveDocument();
	if (pDocument != NULL && !pDocument->CanCloseFrame(this))
	{
		// document can't close right now -- don't close it
		return;
	}
	CWinApp* pApp = AfxGetApp();
	if (pApp != NULL && pApp->m_pMainWnd == this)
	{
		// attempt to save all documents
		if (pDocument == NULL && !pApp->SaveAllModified())
			return;     // don't close it

		// hide the application's windows before closing all the documents
		pApp->HideApplication();

		// close all documents first
		pApp->CloseAllDocuments(FALSE);

		// don't exit if there are outstanding component objects
		if (!AfxOleCanExitApp())
		{
			// take user out of control of the app
			AfxOleSetUserCtrl(FALSE);

			// don't destroy the main window and close down just yet
			//  (there are outstanding component (OLE) objects)
			return;
		}

		// there are cases where destroying the documents may destroy the
		//  main window of the application.
		if (!afxContextIsDLL && pApp->m_pMainWnd == NULL)
		{
			AfxPostQuitMessage(0);
			return;
		}
	}

	// detect the case that this is the last frame on the document and
	// shut down with OnCloseDocument instead.
	if (pDocument != NULL && pDocument->m_bAutoDelete)
	{
		BOOL bOtherFrame = FALSE;
		POSITION pos = pDocument->GetFirstViewPosition();
		while (pos != NULL)
		{
			CView* pView = pDocument->GetNextView(pos);
			ASSERT_VALID(pView);
			if (pView->GetParentFrame() != this)
			{
				bOtherFrame = TRUE;
				break;
			}
		}
		if (!bOtherFrame)
		{
			pDocument->OnCloseDocument();
			return;
		}

		// allow the document to cleanup before the window is destroyed
		pDocument->PreCloseFrame(this);
	}

	// then destroy the window
	DestroyWindow();
}

void CFrameWnd::OnDestroy()
{
	DestroyDockBars();

	// reset menu to default before final shutdown
	if (m_hMenuDefault != NULL && ::GetMenu(m_hWnd) != m_hMenuDefault)
	{
		::SetMenu(m_hWnd, m_hMenuDefault);
		ASSERT(::GetMenu(m_hWnd) == m_hMenuDefault);
	}

	// Automatically quit when the main window is destroyed.
	CWinApp* pApp = AfxGetApp();
	if (pApp != NULL && pApp->m_pMainWnd == this)
	{
		// closing the main application window
		::WinHelp(m_hWnd, NULL, HELP_QUIT, 0L);

		// will call PostQuitMessage in CWnd::OnNcDestroy
	}
	CWnd::OnDestroy();
}

void CFrameWnd::RemoveControlBar(CControlBar *pBar)
{
	POSITION pos = m_listControlBars.Find(pBar);
	if (pos != NULL)
		m_listControlBars.RemoveAt(pos);
}

/////////////////////////////////////////////////////////////////////////////
// CFrameWnd command/message routing

BOOL CFrameWnd::OnCmdMsg(UINT nID, int nCode, void* pExtra,
	AFX_CMDHANDLERINFO* pHandlerInfo)
{
	CPushRoutingFrame push(this);

	// pump through current view FIRST
	CView* pView = GetActiveView();
	if (pView != NULL && pView->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
		return TRUE;

	// then pump through frame
	if (CWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
		return TRUE;

	// last but not least, pump through app
	CWinApp* pApp = AfxGetApp();
	if (pApp != NULL && pApp->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
		return TRUE;

	return FALSE;
}

// Delegate scroll messages to active view as well
void CFrameWnd::OnHScroll(UINT, UINT, CScrollBar*)
{
	CWnd* pActiveView = GetActiveView();
	if (pActiveView != NULL)
	{
		const MSG* pMsg = GetCurrentMessage();
		pActiveView->SendMessage(WM_HSCROLL, pMsg->wParam, pMsg->lParam);
	}
}

void CFrameWnd::OnVScroll(UINT, UINT, CScrollBar*)
{
	CWnd* pActiveView = GetActiveView();
	if (pActiveView != NULL)
	{
		const MSG* pMsg = GetCurrentMessage();
		pActiveView->SendMessage(WM_VSCROLL, pMsg->wParam, pMsg->lParam);
	}
}

LRESULT CFrameWnd::OnActivateTopLevel(WPARAM wParam, LPARAM lParam)
{
	CWnd::OnActivateTopLevel(wParam, lParam);

	// exit Shift+F1 help mode on activation changes
	ExitHelpMode();

#ifndef _AFX_NO_OLE_SUPPORT
	// allow OnFrameWindowActivate to be sent to in-place items
	if (m_pNotifyHook != NULL)
	{
		// activate when active and when not minimized
		m_pNotifyHook->OnActivate(
			LOWORD(wParam) != WA_INACTIVE && !HIWORD(wParam));
	}
#endif

	// deactivate current active view
	if (AfxGetThread()->m_pMainWnd == this)
	{
		CView* pActiveView = GetActiveView();
		if (pActiveView == NULL)
			pActiveView = GetActiveFrame()->GetActiveView();
		if (pActiveView != NULL)
			pActiveView->OnActivateView(FALSE, pActiveView, pActiveView);
	}

	// force idle processing to update any key state indicators
	PostMessage(WM_KICKIDLE);

	return 0;
}

void CFrameWnd::OnActivate(UINT nState, CWnd* pWndOther, BOOL bMinimized)
{
	CWnd::OnActivate(nState, pWndOther, bMinimized);

	// get top level frame unless this is a child window
	// determine if window should be active or not
	CFrameWnd* pTopLevel = (GetStyle() & WS_CHILD) ? this : GetTopLevelFrame();
	ASSERT(pTopLevel != NULL);
	CWnd* pActive = (nState == WA_INACTIVE ? pWndOther : this);
	BOOL bStayActive =
		(pTopLevel == pActive ||
		(pTopLevel == pActive->GetTopLevelFrame() &&
		(pActive == pTopLevel ||
			pActive->SendMessage(WM_FLOATSTATUS, FS_SYNCACTIVE) != 0)));
	pTopLevel->m_nFlags &= ~WF_STAYACTIVE;
	if (bStayActive)
		pTopLevel->m_nFlags |= WF_STAYACTIVE;

	// sync floating windows to the new state
	NotifyFloatingWindows(bStayActive ? FS_ACTIVATE : FS_DEACTIVATE);

	// get active view (use active frame if no active view)
	CView* pActiveView = GetActiveView();
	if (pActiveView == NULL)
		pActiveView = GetActiveFrame()->GetActiveView();

	// when frame gets activated, re-activate current view
	if (pActiveView != NULL)
	{
		if (nState != WA_INACTIVE && !bMinimized)
			pActiveView->OnActivateView(TRUE, pActiveView, pActiveView);

		// always notify the view of frame activations
		pActiveView->OnActivateFrame(nState, this);
	}
}

BOOL CFrameWnd::OnNcActivate(BOOL bActive)
{
	// stay active if WF_STAYACTIVE bit is on
	if (m_nFlags & WF_STAYACTIVE)
		bActive = TRUE;

	// but do not stay active if the window is disabled
	if (!IsWindowEnabled())
		bActive = FALSE;

	// do not call the base class because it will call Default()
	//  and we may have changed bActive.
	return (BOOL)DefWindowProc(WM_NCACTIVATE, bActive, 0L);
}

void CFrameWnd::OnSysCommand(UINT nID, LONG lParam)
{
	CFrameWnd* pFrameWnd = GetTopLevelFrame();
	ASSERT_VALID(pFrameWnd);

	// set status bar as appropriate
	UINT nItemID = (nID & 0xFFF0);

	// don't interfere with system commands if not in help mode
	if (pFrameWnd->m_bHelpMode)
	{
		switch (nItemID)
		{
		case SC_SIZE:
		case SC_MOVE:
		case SC_MINIMIZE:
		case SC_MAXIMIZE:
		case SC_NEXTWINDOW:
		case SC_PREVWINDOW:
		case SC_CLOSE:
		case SC_RESTORE:
		case SC_TASKLIST:
			if (!SendMessage(WM_COMMANDHELP, 0,
			  HID_BASE_COMMAND+ID_COMMAND_FROM_SC(nItemID)))
				SendMessage(WM_COMMAND, ID_DEFAULT_HELP);
			return;
		}
	}

	// call default functionality
	CWnd::OnSysCommand(nID, lParam);
}

/////////////////////////////////////////////////////////////////////////////
// default frame processing

// default drop processing will attempt to open the file
void CFrameWnd::OnDropFiles(HDROP hDropInfo)
{
	SetActiveWindow();      // activate us first !
	UINT nFiles = ::DragQueryFile(hDropInfo, (UINT)-1, NULL, 0);

	CWinApp* pApp = AfxGetApp();
	ASSERT(pApp != NULL);
	for (UINT iFile = 0; iFile < nFiles; iFile++)
	{
		TCHAR szFileName[_MAX_PATH];
		::DragQueryFile(hDropInfo, iFile, szFileName, _MAX_PATH);
		pApp->OpenDocumentFile(szFileName);
	}
	::DragFinish(hDropInfo);
}

// query end session for main frame will attempt to close it all down
BOOL CFrameWnd::OnQueryEndSession()
{
	CWinApp* pApp = AfxGetApp();
	if (pApp != NULL && pApp->m_pMainWnd == this)
		return pApp->SaveAllModified();

	return TRUE;
}

// when Windows session ends, close all documents
void CFrameWnd::OnEndSession(BOOL bEnding)
{
	if (!bEnding)
		return;

	CWinApp* pApp = AfxGetApp();
	if (pApp != NULL && pApp->m_pMainWnd == this)
	{
		AfxOleSetUserCtrl(TRUE);    // keeps from randomly shutting down
		pApp->CloseAllDocuments(TRUE);

		// allow application to save settings, etc.