GL Studio C++ Runtime API
callback_caller_base.h
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1 /*! \file
2  \brief The CallbackMethodCallerBase class.
3 
4  \par Copyright Information
5 
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39 */
40 #ifndef _CALLBACK_CALLER_BASE_H
41 #define _CALLBACK_CALLER_BASE_H
42 
43 #include <cstddef>
44 
45 namespace disti
46 {
47 // Forward references
48 class DisplayObject;
49 class DisplayEvent;
50 
51 /** CallbackMethodCallerBase will be derived by any
52  class desiring to use it.
53  It allows for calling bound methods for specific objects
54 */
56 {
57 protected:
58  // Constructor is protected to force
59  // derivation without making it pure virtual
61 
62 public:
63  virtual ~CallbackMethodCallerBase() {}
64 
65  // Three paterns of methods are supported:
66  // int Method(DisplayObject*, DisplayEvent*)
67  // This is for mouse and keyboard events.
68  // 1 should be returned if event is handled, 0 otherwise
69  virtual int Call( DisplayObject* /*target*/, DisplayEvent* ) { return 0; };
70  // void Method(DisplayEvent* ev, void* callbackData)
71  // This is used mostly for user events
72  // The callbackData is generally passed in when this object is created.
73  virtual void CallType2( DisplayEvent*, void* /*callbackData*/ = NULL ){};
74  // void Method(void)
75  // Allows for a very simple callback, with no additional data passed.
76  virtual void CallType3(){};
77 
78  virtual CallbackMethodCallerBase* Duplicate() const { return NULL; }
79 
80  virtual void SetContainer( DisplayObject* container ) = 0;
81 };
82 
83 } // namespace disti
84 #endif
Definition: display.h:98
Definition: events.h:111
Definition: callback_caller_base.h:55
Definition: bmpimage.h:46