CDialogEx是VS2003之后出现的，VC++6.0没有。
CDialogEx = CDialog Extend
Extend的意思是扩展，即扩展的CDialog!
这个类是CDialog的扩展类，基类就是CDialog，具备基类全部功能，并根据新系统需要增加了一些界面美化的功能。
比如修改对话框的背景颜色，标题栏的颜色，标题栏的位图，标题栏字体的位置和颜色，包括激活和非激活状态，对话框边界的颜色，对话框字体等。
如果使用的是VS2005之后的版本，推荐使用CDialogEx，好看一些，VC++6就不要想了，老实用CDialog吧。
两个在基础功能上没什么区别，但因为版本不同，MFC向导生成的类模板差异较大。
CDialogEx类
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// CDialogEx dialog class CDialogEx : public CDialog { friend class CMFCPopupMenu; friend class CMFCDropDownListBox; friend class CContextMenuManager; DECLARE_DYNAMIC(CDialogEx) // Construction public: CDialogEx(); CDialogEx(UINT nIDTemplate, CWnd *pParent = NULL); CDialogEx(LPCTSTR lpszTemplateName, CWnd *pParentWnd = NULL); protected: void CommonConstruct(); // Attributes: public: enum BackgroundLocation { BACKGR_TILE, BACKGR_TOPLEFT, BACKGR_TOPRIGHT, BACKGR_BOTTOMLEFT, BACKGR_BOTTOMRIGHT, }; protected: HBITMAP m_hBkgrBitmap; CSize m_sizeBkgrBitmap; CBrush m_brBkgr; BackgroundLocation m_BkgrLocation; CDialogImpl m_Impl; BOOL m_bAutoDestroyBmp; // Operations: public: void SetBackgroundColor(COLORREF color, BOOL bRepaint = TRUE); void SetBackgroundImage(HBITMAP hBitmap, BackgroundLocation location = BACKGR_TILE, BOOL bAutoDestroy = TRUE, BOOL bRepaint = TRUE); BOOL SetBackgroundImage(UINT uiBmpResId, BackgroundLocation location = BACKGR_TILE, BOOL bRepaint = TRUE); // Overrides public: virtual BOOL PreTranslateMessage(MSG* pMsg); protected: virtual BOOL OnCommand(WPARAM wParam, LPARAM lParam); // Implementation protected: //{{AFX_MSG(CDialogEx) afx_msg void OnActivate(UINT nState, CWnd *pWndOther, BOOL bMinimized); afx_msg BOOL OnNcActivate(BOOL bActive); afx_msg BOOL OnEraseBkgnd(CDC* pDC); afx_msg void OnDestroy(); afx_msg HBRUSH OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor); afx_msg void OnSysColorChange(); afx_msg void OnSettingChange(UINT uFlags, LPCTSTR lpszSection); //}}AFX_MSG DECLARE_MESSAGE_MAP() void SetActiveMenu(CMFCPopupMenu* pMenu); }; |
CDialog 类
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// CDialog - a modal or modeless dialog class CDialog : public CWnd { DECLARE_DYNAMIC(CDialog) // Modeless construct public: CDialog(); virtual BOOL Create(LPCTSTR lpszTemplateName, CWnd* pParentWnd = NULL); virtual BOOL Create(UINT nIDTemplate, CWnd* pParentWnd = NULL); virtual BOOL CreateIndirect(LPCDLGTEMPLATE lpDialogTemplate, CWnd* pParentWnd = NULL, void* lpDialogInit = NULL); virtual BOOL CreateIndirect(HGLOBAL hDialogTemplate, CWnd* pParentWnd = NULL); // Modal construct public: explicit CDialog(LPCTSTR lpszTemplateName, CWnd* pParentWnd = NULL); explicit CDialog(UINT nIDTemplate, CWnd* pParentWnd = NULL); BOOL InitModalIndirect(LPCDLGTEMPLATE lpDialogTemplate, CWnd* pParentWnd = NULL, void* lpDialogInit = NULL); BOOL InitModalIndirect(HGLOBAL hDialogTemplate, CWnd* pParentWnd = NULL); // Attributes public: void MapDialogRect(LPRECT lpRect) const; void SetHelpID(UINT nIDR); // Operations public: // modal processing virtual INT_PTR DoModal(); // support for passing on tab control - use 'PostMessage' if needed void NextDlgCtrl() const; void PrevDlgCtrl() const; void GotoDlgCtrl(CWnd* pWndCtrl); // default button access void SetDefID(UINT nID); DWORD GetDefID() const; // termination void EndDialog(int nResult); // Overridables (special message map entries) virtual BOOL OnInitDialog(); virtual void OnSetFont(CFont* pFont); protected: virtual void OnOK(); virtual void OnCancel(); // Implementation public: virtual ~CDialog(); #ifdef _DEBUG virtual void AssertValid() const; virtual void Dump(CDumpContext& dc) const; #endif virtual BOOL PreTranslateMessage(MSG* pMsg); virtual BOOL OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo); virtual BOOL CheckAutoCenter(); protected: UINT m_nIDHelp; // Help ID (0 for none, see HID_BASE_RESOURCE) // parameters for 'DoModal' LPCTSTR m_lpszTemplateName; // name or MAKEINTRESOURCE HGLOBAL m_hDialogTemplate; // indirect (m_lpDialogTemplate == NULL) LPCDLGTEMPLATE m_lpDialogTemplate; // indirect if (m_lpszTemplateName == NULL) void* m_lpDialogInit; // DLGINIT resource data CWnd* m_pParentWnd; // parent/owner window HWND m_hWndTop; // top level parent window (may be disabled) #ifndef _AFX_NO_OCC_SUPPORT _AFX_OCC_DIALOG_INFO* m_pOccDialogInfo; virtual BOOL SetOccDialogInfo(_AFX_OCC_DIALOG_INFO* pOccDialogInfo); virtual _AFX_OCC_DIALOG_INFO* GetOccDialogInfo(); #endif virtual void PreInitDialog(); // implementation helpers HWND PreModal(); void PostModal(); BOOL CreateIndirect(LPCDLGTEMPLATE lpDialogTemplate, CWnd* pParentWnd, void* lpDialogInit, HINSTANCE hInst); BOOL CreateIndirect(HGLOBAL hDialogTemplate, CWnd* pParentWnd, HINSTANCE hInst); protected: //{{AFX_MSG(CDialog) afx_msg LRESULT OnCommandHelp(WPARAM wParam, LPARAM lParam); afx_msg LRESULT OnHelpHitTest(WPARAM wParam, LPARAM lParam); afx_msg LRESULT HandleInitDialog(WPARAM, LPARAM); afx_msg LRESULT HandleSetFont(WPARAM, LPARAM); afx_msg void OnPaint(); //}}AFX_MSG DECLARE_MESSAGE_MAP() }; // all CModalDialog functionality is now in CDialog #define CModalDialog CDialog |
CDialogEx=CDialog ExtendExtend的意思是扩展，即扩展的CDialog