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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wupdlock.h | |
3 | // Purpose: interface of wxWindowUpdateLocker | |
4 | // Author: wxWidgets team | |
5 | // Licence: wxWindows licence | |
6 | ///////////////////////////////////////////////////////////////////////////// | |
7 | ||
8 | /** | |
9 | @class wxWindowUpdateLocker | |
10 | ||
11 | This tiny class prevents redrawing of a wxWindow during its lifetime by using | |
12 | wxWindow::Freeze() and wxWindow::Thaw() methods. | |
13 | ||
14 | It is typically used for creating automatic objects to temporarily suppress | |
15 | window updates before a batch of operations is performed: | |
16 | ||
17 | @code | |
18 | void MyFrame::Foo() | |
19 | { | |
20 | m_text = new wxTextCtrl(this, ...); | |
21 | ||
22 | wxWindowUpdateLocker noUpdates(m_text); | |
23 | m_text-AppendText(); | |
24 | ... many other operations with m_text... | |
25 | m_text-WriteText(); | |
26 | } | |
27 | @endcode | |
28 | ||
29 | Using this class is easier and safer than calling wxWindow::Freeze() and | |
30 | wxWindow::Thaw() because you don't risk to forget calling the latter. | |
31 | ||
32 | @library{wxbase} | |
33 | @category{misc} | |
34 | */ | |
35 | class wxWindowUpdateLocker | |
36 | { | |
37 | public: | |
38 | /** | |
39 | Creates an object preventing the updates of the specified @e win. | |
40 | The parameter must be non-@NULL and the window must exist for longer than | |
41 | wxWindowUpdateLocker object itself. | |
42 | */ | |
43 | wxWindowUpdateLocker(wxWindow* win); | |
44 | ||
45 | /** | |
46 | Destructor reenables updates for the window this object is associated with. | |
47 | */ | |
48 | ~wxWindowUpdateLocker(); | |
49 | }; | |
50 |