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Annotation of mstools/mfc/src/winmdi.cpp, revision 1.1

1.1     ! root        1: // This is a part of the Microsoft Foundation Classes C++ library. 
        !             2: // Copyright (C) 1992 Microsoft Corporation 
        !             3: // All rights reserved. 
        !             4: //  
        !             5: // This source code is only intended as a supplement to the 
        !             6: // Microsoft Foundation Classes Reference and Microsoft 
        !             7: // QuickHelp documentation provided with the library. 
        !             8: // See these sources for detailed information regarding the 
        !             9: // Microsoft Foundation Classes product. 
        !            10: 
        !            11: 
        !            12: #include "afxwin.h"
        !            13: #pragma hdrstop
        !            14: 
        !            15: #include "winhand_.h"
        !            16: #include "window_.h"
        !            17: 
        !            18: #ifdef AFX_CORE_SEG
        !            19: #pragma code_seg(AFX_CORE_SEG)
        !            20: #endif
        !            21: 
        !            22: #ifdef _DEBUG
        !            23: #undef THIS_FILE
        !            24: static char BASED_CODE THIS_FILE[] = __FILE__;
        !            25: #define new DEBUG_NEW
        !            26: #endif
        !            27: 
        !            28: 
        !            29: /////////////////////////////////////////////////////////////////////////////
        !            30: // CMDIFrameWnd
        !            31: 
        !            32: IMPLEMENT_DYNAMIC(CMDIFrameWnd, CFrameWnd)
        !            33: 
        !            34: CMDIFrameWnd::CMDIFrameWnd()
        !            35: {
        !            36:        m_hWndMDIClient = NULL;
        !            37: }
        !            38: 
        !            39: #ifdef _DEBUG
        !            40: void CMDIFrameWnd::AssertValid() const
        !            41: {
        !            42:        CFrameWnd::AssertValid();
        !            43:        ASSERT(m_hWndMDIClient == NULL || ::IsWindow(m_hWndMDIClient));
        !            44: }
        !            45: #endif
        !            46: 
        !            47: BEGIN_MESSAGE_MAP(CMDIFrameWnd, CFrameWnd)
        !            48:        ON_WM_CREATE()
        !            49: END_MESSAGE_MAP()
        !            50: 
        !            51: int 
        !            52: CMDIFrameWnd::OnCreate(LPCREATESTRUCT lpCreateStruct)
        !            53: {
        !            54:        CMenu* pMenu = GetMenu();
        !            55:        // This is attempting to guess which sub-menu is the Window menu.
        !            56:        // The Windows user interface guidelines say that the right-most
        !            57:        // menu on the menu bar should be Help and Window should be one
        !            58:        // to the left of that.
        !            59:        int iMenu = pMenu->GetMenuItemCount() - 2;
        !            60:        
        !            61:        // If this assertion fails, your menu bar does not follow the guidelines
        !            62:        // so you will have to override this function and call CreateClient
        !            63:        // appropriately.
        !            64:        ASSERT(iMenu >= 0);
        !            65:        
        !            66:        return CreateClient(lpCreateStruct, pMenu->GetSubMenu(iMenu)) ? 0 : -1;
        !            67: }
        !            68: 
        !            69: 
        !            70: BOOL 
        !            71: CMDIFrameWnd::OnCommand(UINT wParam, LONG lParam)
        !            72: {
        !            73:        CWnd* pActiveChild = GetChildFrame();
        !            74:        
        !            75:        if (pActiveChild != this && _AfxCallWndProc(pActiveChild,
        !            76:          pActiveChild->m_hWnd, WM_COMMAND, wParam, lParam) != 0)
        !            77:        {
        !            78:                // handled by child
        !            79:                return TRUE;
        !            80:        }
        !            81: 
        !            82:        if (CFrameWnd::OnCommand(wParam, lParam))
        !            83:        {
        !            84:                // handled by us
        !            85:                return TRUE;
        !            86:        }
        !            87: 
        !            88:        if (LOWORD(lParam) == 0 && (wParam & 0xf000) == 0xf000)
        !            89:        {
        !            90:                // menu or accelerator within range of MDI children
        !            91:                // default frame proc will handle it
        !            92:                DefWindowProc(WM_COMMAND, wParam, lParam);
        !            93:                return TRUE;
        !            94:        }
        !            95: 
        !            96:        return FALSE;   // not handled
        !            97: }
        !            98: 
        !            99: 
        !           100: BOOL
        !           101: CMDIFrameWnd::CreateClient(LPCREATESTRUCT /* lpCreateStruct */, 
        !           102:        CMenu* pWindowMenu)
        !           103: {
        !           104:        ASSERT(m_hWnd != NULL);
        !           105:        
        !           106:        CLIENTCREATESTRUCT ccs;
        !           107:        
        !           108:        ccs.hWindowMenu = pWindowMenu->m_hMenu;
        !           109:        ccs.idFirstChild = AFX_IDM_FIRST_MDICHILD;
        !           110:        
        !           111:        if ((m_hWndMDIClient = ::CreateWindowEx(0, "mdiclient", NULL, 
        !           112:                WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN, 0, 0, 0, 0, m_hWnd, NULL, 
        !           113:                AfxGetInstanceHandle(), (LPSTR)(LPCLIENTCREATESTRUCT)&ccs)) == NULL)
        !           114:        {
        !           115:                TRACE("Warning: CMDIFrameWnd::CreateClient: failed to create MDICLIENT\n");
        !           116:                return FALSE;
        !           117:        }
        !           118: 
        !           119:        return TRUE;
        !           120: }
        !           121: 
        !           122: 
        !           123: CFrameWnd* 
        !           124: CMDIFrameWnd::GetChildFrame()
        !           125: {
        !           126:        CFrameWnd* pActiveWnd = MDIGetActive();
        !           127:        
        !           128:        if (pActiveWnd != NULL)
        !           129:                return pActiveWnd;
        !           130:        
        !           131:        return this;
        !           132: }
        !           133: 
        !           134: 
        !           135: LONG 
        !           136: CMDIFrameWnd::DefWindowProc(UINT nMsg, UINT wParam, LONG lParam)
        !           137: {
        !           138:        return ::DefFrameProc(m_hWnd, m_hWndMDIClient, nMsg, wParam, lParam);
        !           139: }
        !           140: 
        !           141: 
        !           142: BOOL 
        !           143: CMDIFrameWnd::PreTranslateMessage(MSG* pMsg)
        !           144: {
        !           145:        CMDIChildWnd * pChildWnd = MDIGetActive();
        !           146:        
        !           147:        // current active child gets first crack at it
        !           148:        if (pChildWnd != NULL && pChildWnd->PreTranslateMessage(pMsg))
        !           149:                return TRUE;
        !           150:        
        !           151:        // translate accelerators for frame and any children
        !           152:        if (m_hAccelTable != NULL &&
        !           153:                ::TranslateAccelerator(m_hWnd, m_hAccelTable, pMsg))
        !           154:        {
        !           155:                return TRUE;
        !           156:        }
        !           157:        
        !           158:        // special processing for MDI accelerators last
        !           159:        if (pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN)
        !           160:        {
        !           161:                // the MDICLIENT window may translate it
        !           162:                if (::TranslateMDISysAccel(m_hWndMDIClient, pMsg))
        !           163:                        return TRUE;
        !           164:        }
        !           165: 
        !           166:        return FALSE;
        !           167: }
        !           168: 
        !           169: BOOL 
        !           170: CMDIFrameWnd::Create(LPCSTR lpClassName,
        !           171:        LPCSTR lpWindowName, DWORD dwStyle, const RECT& rect, 
        !           172:        const CWnd* pParentWnd, LPCSTR lpMenuName)
        !           173: {
        !           174:        ASSERT(lpMenuName != NULL);
        !           175: 
        !           176:        if (lpClassName == NULL)
        !           177:                lpClassName = _afxMDIFrameWnd;
        !           178: 
        !           179:        return CFrameWnd::Create(lpClassName,
        !           180:                lpWindowName, dwStyle, rect, pParentWnd, lpMenuName);
        !           181: }
        !           182: 
        !           183: /////////////////////////////////////////////////////////////////////////////
        !           184: // CMDIChildWnd
        !           185: 
        !           186: IMPLEMENT_DYNAMIC(CMDIChildWnd, CFrameWnd)
        !           187: 
        !           188: #ifdef _DEBUG
        !           189: void 
        !           190: CMDIChildWnd::AssertValid() const
        !           191: {
        !           192:        CFrameWnd::AssertValid();
        !           193: }
        !           194: 
        !           195: void 
        !           196: CMDIChildWnd::Dump(CDumpContext& dc) const
        !           197: {
        !           198:        CFrameWnd::Dump(dc);
        !           199:        dc << "\nm_pMDIFrameWnd = " << (void *)m_pMDIFrameWnd;
        !           200: }
        !           201: #endif
        !           202: 
        !           203: LONG
        !           204: CMDIChildWnd::DefWindowProc(UINT nMsg, UINT wParam, LONG lParam)
        !           205: {
        !           206:        return ::DefMDIChildProc(m_hWnd, nMsg, wParam, lParam);
        !           207: }
        !           208: 
        !           209: 
        !           210: BOOL
        !           211: CMDIChildWnd::DestroyWindow()
        !           212: {
        !           213:        if (m_hWnd == NULL)
        !           214:                return FALSE;
        !           215:        MDIDestroy();
        !           216:        return TRUE;
        !           217: }
        !           218: 
        !           219: BOOL 
        !           220: CMDIChildWnd::PreTranslateMessage(MSG* pMsg)
        !           221: {
        !           222:        // we can't call 'CFrameWnd::PreTranslate' since it will translate
        !           223:        //  accelerators in the context of the MDI Child - but since MDI Child
        !           224:        //  windows don't have menus this doesn't work properly.  MDI Child
        !           225:        //  accelerators must be translated in context of their MDI Frame.
        !           226: 
        !           227:        return (m_hAccelTable != NULL &&
        !           228:          ::TranslateAccelerator(m_pMDIFrameWnd->m_hWnd, m_hAccelTable, pMsg));
        !           229: }
        !           230: 
        !           231: 
        !           232: BOOL 
        !           233: CMDIChildWnd::Create(LPCSTR lpClassName,
        !           234:        LPCSTR lpWindowName, DWORD dwStyle,
        !           235:        const RECT& rect,
        !           236:        CMDIFrameWnd* pParentWnd)
        !           237: {
        !           238:        MDICREATESTRUCT mcs;
        !           239:        
        !           240:        if (lpClassName == NULL)
        !           241:                lpClassName = _afxFrameWnd;
        !           242:        mcs.szClass = lpClassName;
        !           243:        mcs.szTitle = lpWindowName;
        !           244:        mcs.hOwner = AfxGetInstanceHandle();
        !           245:        mcs.x = rect.left;
        !           246:        mcs.y = rect.top;
        !           247:        mcs.cx = rect.right - rect.left;
        !           248:        mcs.cy = rect.bottom - rect.top;
        !           249:        mcs.style = dwStyle;
        !           250:        mcs.lParam = 0;
        !           251:        
        !           252:        if (pParentWnd == NULL)
        !           253:        {
        !           254:                CWnd* pMainWnd = AfxGetApp()->m_pMainWnd;
        !           255:                ASSERT(pMainWnd != NULL);
        !           256:                ASSERT(pMainWnd->IsKindOf(RUNTIME_CLASS(CMDIFrameWnd)));
        !           257:                pParentWnd = (CMDIFrameWnd*)pMainWnd;
        !           258:        }
        !           259:        
        !           260:        m_pMDIFrameWnd = pParentWnd;
        !           261:        
        !           262:        // Restore the currently active MDI child if it is maximized since
        !           263:        // Windows will do this anyway when this one is created and if we
        !           264:        // wait until then several more messages go through our hook...
        !           265:        BOOL bMaximized;
        !           266:        CMDIChildWnd* pActiveMDIChild = pParentWnd->MDIGetActive(&bMaximized);
        !           267:        if (bMaximized)
        !           268:                pParentWnd->MDIRestore(pActiveMDIChild);
        !           269: 
        !           270:        _AfxHookWindowCreate(this);
        !           271:        BOOL bReturn = (BOOL)::SendMessage(pParentWnd->m_hWndMDIClient, 
        !           272:                WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
        !           273:        _AfxUnhookWindowCreate();
        !           274:        return bReturn;
        !           275: }
        !           276: 
        !           277: CFrameWnd* 
        !           278: CMDIChildWnd::GetParentFrame()
        !           279: {
        !           280:        return m_pMDIFrameWnd;
        !           281: }
        !           282: 

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