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Right mouse button event handler

Discussion in 'MFC' started by shabbir, Jul 9, 2005.

  1. shabbir

    shabbir Administrator Staff Member

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    MFC does not allow to trap all the events on the CButton control but some commonly used events like BN_CLICKED and BN_DOUBLECLICKED and so to trap a right mouse button events on a CButton MFC you need to derive a new class from the CButton.

    MyButton.h
    Code:
    class CMyButton : public CButton
    {
    // Construction
    public:
      CMyButton();
    
    // Attributes
    public:
    
    // Operations
    public:
    
    // Overrides
      // ClassWizard generated virtual function overrides
      //{{AFX_VIRTUAL(CMyButton)
      //}}AFX_VIRTUAL
    
    // Implementation
    public:
      virtual ~CMyButton();
    
      // Generated message map functions
    protected:
      //{{AFX_MSG(CMyButton)
      afx_msg void OnRButtonUp(UINT nFlags, CPoint point);
      //}}AFX_MSG
    
      DECLARE_MESSAGE_MAP()
    };
    
    MyButton.cpp
    Code:
    BEGIN_MESSAGE_MAP(CMyButton, CButton)
      //{{AFX_MSG_MAP(CMyButton)
      ON_WM_RBUTTONUP()
      //}}AFX_MSG_MAP
    END_MESSAGE_MAP()
    
    /////////////////////////////////////////////////////////////////////////////
    // CMyButton message handlers
    
    void CMyButton::OnRButtonUp(UINT nFlags, CPoint point) 
    {
      // TODO: Add your message handler code here and/or call default
      NMHDR hdr;
      hdr.code = NM_RCLICK;
      hdr.hwndFrom = this->GetSafeHwnd();
      hdr.idFrom = GetDlgCtrlID();
      TRACE("OnRButtonUp");
      this->GetParent()->SendMessage(WM_NOTIFY, (WPARAM)hdr.idFrom, (LPARAM)&hdr);
    }
    
    Now in your Dialog class you need to trap the Message that your CMyButton passes. The message passed is NM_RCLICK and you capture it as
    Code:
      ON_NOTIFY(NM_RCLICK, IDC_BUTTON1, OnRClicked)
      ON_NOTIFY(NM_RCLICK, IDC_BUTTON2, OnRClicked)
    
    Your member function must be declared with the following prototype:

    afx_msg void memberFxn( NMHDR * pNotifyStruct, LRESULT * result );

    afx_msg void OnRClicked( NMHDR * pNotifyStruct, LRESULT * result )
     

    Attached Files:

  2. naresha1

    naresha1 New Member

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    _beginthread

    iam getting undeclared error in _beginthread
    process.h included
    this has been done
    "Project|Settings|C/C++|Code generation|Use runtime library: (Debug)
    > multithreaded"
    getting unresolved error in linking:_fun()@1

    solution plz
     
  3. shabbir

    shabbir Administrator Staff Member

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    Did you follow all the steps correctly. You probably have a call to a function _fun which you have not declared.
     
  4. shabbir

    shabbir Administrator Staff Member

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    naresha1 Please refer to [thread=1096]Error Undeclared identifier error _beginthread[/thread].
     
  5. parvez.yu

    parvez.yu New Member

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    i m also getting an error
     
  6. shabbir

    shabbir Administrator Staff Member

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    What is the error
     
  7. parvez.yu

    parvez.yu New Member

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    now its done actually there was some declaration problem
     
  8. Panarchy

    Panarchy New Member

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    So... yeah.

    I downloaded the files, your files, but can't compile them.

    Are they complete files in there own, or what?
     
  9. shabbir

    shabbir Administrator Staff Member

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  10. Panarchy

    Panarchy New Member

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    Well it didn't compile for me...

    Visual Studio 2008 Professional
     
    Last edited: Jun 14, 2009
  11. shabbir

    shabbir Administrator Staff Member

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    They compile for me on VS 2005 and I do not have 2008. What error you get ?
     
  12. Panarchy

    Panarchy New Member

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    Sorry for the late reply;
    Code:
    1>------ Build started: Project: MyButton, Configuration: Debug Win32 ------
    1>Compiling...
    1>MyButton.cpp
    1>c:\mybutton\mybutton\mybutton.h(14) : error C2504: 'CButton' : base class undefined
    1>c:\mybutton\mybutton\mybutton.h(37) : error C2144: syntax error : 'void' should be preceded by ';'
    1>c:\mybutton\mybutton\mybutton.h(37) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
    1>c:\mybutton\mybutton\mybutton.h(37) : error C2061: syntax error : identifier 'CPoint'
    1>c:\mybutton\mybutton\mybutton.h(41) : error C2143: syntax error : missing ';' before '}'
    1>c:\mybutton\mybutton\mybutton.h(41) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
    1>c:\mybutton\mybutton\mybutton.h(41) : warning C4183: 'DECLARE_MESSAGE_MAP': missing return type; assumed to be a member function returning 'int'
    1>c:\mybutton\mybutton\mybutton.cpp(25) : error C2061: syntax error : identifier 'CButton'
    1>c:\mybutton\mybutton\mybutton.cpp(27) : error C3646: 'ON_WM_RBUTTONUP' : unknown override specifier
    1>c:\mybutton\mybutton\mybutton.cpp(29) : error C3646: 'END_MESSAGE_MAP' : unknown override specifier
    1>c:\mybutton\mybutton\mybutton.cpp(29) : error C2091: function returns function
    1>c:\mybutton\mybutton\mybutton.cpp(34) : error C2091: function returns function
    1>c:\mybutton\mybutton\mybutton.cpp(34) : error C2144: syntax error : 'void' should be preceded by ';'
    1>c:\mybutton\mybutton\mybutton.cpp(34) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
    1>c:\mybutton\mybutton\mybutton.cpp(34) : error C2061: syntax error : identifier 'CPoint'
    1>c:\mybutton\mybutton\mybutton.cpp(38) : error C2065: 'NM_RCLICK' : undeclared identifier
    1>c:\mybutton\mybutton\mybutton.cpp(39) : error C2039: 'GetSafeHwnd' : is not a member of 'CMyButton'
    1>        c:\mybutton\mybutton\mybutton.h(13) : see declaration of 'CMyButton'
    1>c:\mybutton\mybutton\mybutton.cpp(40) : error C2660: 'GetDlgCtrlID' : function does not take 0 arguments
    1>c:\mybutton\mybutton\mybutton.cpp(41) : error C3861: 'TRACE': identifier not found
    1>c:\mybutton\mybutton\mybutton.cpp(42) : error C2039: 'GetParent' : is not a member of 'CMyButton'
    1>        c:\mybutton\mybutton\mybutton.h(13) : see declaration of 'CMyButton'
    1>c:\mybutton\mybutton\mybutton.cpp(42) : error C2227: left of '->SendMessageW' must point to class/struct/union/generic type
    1>Build log was saved at "file://c:\MyButton\MyButton\Debug\BuildLog.htm"
    1>MyButton - 20 error(s), 1 warning(s)
    ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
     
  13. shabbir

    shabbir Administrator Staff Member

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    IF CButton is not defined I guess you have to make sure you are able to compile MFC Programs
     
  14. naimish

    naimish New Member

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    Cool one, need to check it first :) will reply soon
     
  15. Panarchy

    Panarchy New Member

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    Which project should I be using?

    [​IMG]

    Have been using Windows Forms... or win32 project.
     
  16. shabbir

    shabbir Administrator Staff Member

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    I dont see Windows Form in there but you should be using MFC application because CButton and Win32 does not go together..
     
  17. Panarchy

    Panarchy New Member

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    Windows Forms Application

    2nd one down 1st column

    Makes it very easy to design a GUI...
     

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