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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef REMOTING_CAPTURER_WIN_SCOPED_THREAD_DESKTOP_H_ | |
6 #define REMOTING_CAPTURER_WIN_SCOPED_THREAD_DESKTOP_H_ | |
7 | |
8 #include <windows.h> | |
9 | |
10 #include "base/basictypes.h" | |
11 #include "base/memory/scoped_ptr.h" | |
12 | |
13 namespace remoting { | |
14 | |
15 class Desktop; | |
16 | |
17 class ScopedThreadDesktop { | |
18 public: | |
19 ScopedThreadDesktop(); | |
20 ~ScopedThreadDesktop(); | |
21 | |
22 // Returns true if |desktop| has the same desktop name as the currently | |
23 // assigned desktop (if assigned) or as the initial desktop (if not assigned). | |
24 // Returns false in any other case including failing Win32 APIs and | |
25 // uninitialized desktop handles. | |
26 bool IsSame(const Desktop& desktop); | |
27 | |
28 // Reverts the calling thread to use the initial desktop. | |
29 void Revert(); | |
30 | |
31 // Assigns |desktop| to be the calling thread. Returns true if the thread has | |
32 // been switched to |desktop| successfully. | |
33 bool SetThreadDesktop(scoped_ptr<Desktop> desktop); | |
34 | |
35 private: | |
36 // The desktop handle assigned to the calling thread by Set | |
37 scoped_ptr<Desktop> assigned_; | |
38 | |
39 // The desktop handle assigned to the calling thread at creation. | |
40 scoped_ptr<Desktop> initial_; | |
41 | |
42 DISALLOW_COPY_AND_ASSIGN(ScopedThreadDesktop); | |
43 }; | |
44 | |
45 } // namespace remoting | |
46 | |
47 #endif // REMOTING_CAPTURER_WIN_SCOPED_THREAD_DESKTOP_H_ | |
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