CDialog与CDialogEx的区别联系

商佑运

2023-12-01

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

转载于:https://www.cnblogs.com/MakeView660/p/8662336.html

CDialog与CDialogEx的区别联系

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