www.pudn.com > MicroWindows-Source-200606.zip > message.h

// 
// Micro Windows Implementation 
// message.h: the message carrier 
// 
// 由於 C++ 在傳送訊息上不像 Smalltalk, Objective-C 等來得 "OOP", 
// 因此我們必須製作自己的「訊息」物件. 
// 
// $Revision: 1.1 $ 
// $Source: P:/MWINDOWS/INCLUDE/rcs/message.h $ 
// $Date: 1993/10/03 03:44:50 $ 
// 
 
#ifndef __message_h 
#define __message_h 
 
#ifndef __stackque_h 
#   include "stackque.h" 
#endif 
 
#ifndef __gobject_h 
#   include "gobject.h" 
#endif 
 
class View; 
class Controller; 
 
typedef WORD    MsgType; 
typedef DWORD   MsgData; 
 
// 
// general messages (messages from view) 
// 
const MsgType MSG_Quit = 0xffff; 
 
 
class Message : public Object 
{ 
public: 
    Message (View *s = NULL, View *r = NULL, Controller *c = NULL, 
                 MsgType t = 0, Point *p = NULL, Rect *a = NULL, 
                 MsgData e = 0) 
    { 
        sender = s; 
        receiver = r; 
        controller = c; 
        type = t; 
        extra = e; 
        if (p) pnt = *p; 
        if (a) area =*a; 
    } 
 
    View *sender; 
    View *receiver; 
    Controller *controller; 
    MsgType type; 
    Point   pnt; 
    Rect    area; 
    MsgData extra; 
}; 
 
class MessageQueue : public Object 
{ 
public: 
    BOOL    put (Message *msg); 
    BOOL    put (View *s = NULL, View *r = NULL, Controller *c = NULL, 
                 MsgType t = 0, Point *p = NULL, Rect *a = NULL, 
                 MsgData e = 0); 
    Message *get (); 
    BOOL    isEmpty (); 
    void    removeBy (Controller *c, View *r); 
 
protected: 
    Queue   queue; 
}; 
 
#endif