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Annotation of q_a/samples/subclass/readme.txt, revision 1.1

1.1     ! root        1:  Sample: SUBCLASS Program Demonstration
        !             2: 
        !             3: Summary:
        !             4: 
        !             5: The SUBCLASS sample demonstrates how a program can subclass
        !             6: standard controls in order to extend their normal
        !             7: functionality. This sample replaces the window procedure for
        !             8: buttons, edit fields, and list boxes.
        !             9: 
        !            10: More Information:
        !            11: 
        !            12: The standard subclassing technique is to replace the window
        !            13: procedure in the window structure by using:
        !            14: 
        !            15:    SetWindowLong (hwnd, GWL_WNDPROC, (LONG)
        !            16: SubclassWndProc);
        !            17: 
        !            18: In the SUBCLASS sample, the old window procedure is also
        !            19: saved in a structure pointed at by the user data. Thus, any
        !            20: functionality can be added to various classes of windows
        !            21: without having to know what the class originally was.
        !            22: 
        !            23: In this sample, the subclass procedure adds the ability to
        !            24: move and size the control windows when the application is
        !            25: not in "test mode." When the application is in test mode,
        !            26: the subclass procedure calls the original window procedure
        !            27: and the controls behave as normal. Thus, this sample
        !            28: provides the bare bones for a "dialog editor" type of
        !            29: program.
        !            30: 
        !            31: The following is a list of the Win32 API functions used in
        !            32: this sample:
        !            33: 
        !            34:    CallWindowPro  GetMessage     LocalUnlock    SetCursorPos
        !            35:    c
        !            36:    CheckMenuItem  GetStockObjec  PostQuitMessa  SetROP2
        !            37:                   t              ge
        !            38:    ClientToScree  GetWindowLong  Rectangle      SetWindowLong
        !            39:    n
        !            40:    CreateWindow   GetWindowRect  ReleaseCaptur  SetWindowPos
        !            41:                                  e
        !            42:    DispatchMessa  InvalidateRec  ReleaseDC      ShowWindow
        !            43:    ge             t
        !            44:    GetCapture     LoadCursor     ScreenToClien  TranslateMess
        !            45:                                  t              age
        !            46:    GetClientRect  LoadIcon       SelectObject   
        !            47:    GetDC          LocalAlloc     SetCapture     
        !            48:    GetMenu        LocalHandle    SetCursor      
        !            49: 
        !            50: 
        !            51: 

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