tbx  0.7.5
prepolllistener.h
1 /*
2  * tbx RISC OS toolbox library
3  *
4  * Copyright (C) 2014 Alan Buckley All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 /*
25 
26  * prepolllistener.h
27  *
28  * Created on: 6 Jun 2014
29  * Author: alanb
30  */
31 
32 #ifndef TBX_PREPOLLLISTENER_H_
33 #define TBX_PREPOLLLISTENER_H_
34 
35 #include "listener.h"
36 #include "pollinfo.h"
37 
38 namespace tbx
39 {
40 
47 class PrePollListener : public Listener
48 {
49  public:
50  virtual ~PrePollListener() {};
51 
57  virtual bool pre_poll() = 0;
58 };
59 
60 }
61 
62 #endif /* TBX_PREPOLLLISTENER_H_ */
A library for creating RISC OS toolbox applications.
Definition: abouttobeshownlistener.cc:34
Class to provide a listener to allow processing before the call to wimp poll.
Definition: prepolllistener.h:47
Base class for all toolbox event listeners.
Definition: listener.h:33
virtual bool pre_poll()=0
Method called immediately before the call to Wimp_Poll.