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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_WIN_SCOPED_HDC_H_ | 5 #ifndef BASE_WIN_SCOPED_HDC_H_ |
6 #define BASE_WIN_SCOPED_HDC_H_ | 6 #define BASE_WIN_SCOPED_HDC_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <windows.h> | 9 #include <windows.h> |
10 | 10 |
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32 | 32 |
33 operator HDC() { return hdc_; } | 33 operator HDC() { return hdc_; } |
34 | 34 |
35 private: | 35 private: |
36 HWND hwnd_; | 36 HWND hwnd_; |
37 HDC hdc_; | 37 HDC hdc_; |
38 DISALLOW_COPY_AND_ASSIGN(ScopedGetDC); | 38 DISALLOW_COPY_AND_ASSIGN(ScopedGetDC); |
39 }; | 39 }; |
40 | 40 |
41 // Like ScopedHandle but for HDC. Only use this on HDCs returned from | 41 // Like ScopedHandle but for HDC. Only use this on HDCs returned from |
42 // CreateCompatibleDC. | 42 // CreateCompatibleDC. |
sanjeevr
2011/10/05 17:34:06
This comment should be CreateCompatibleDC, CreateD
yosin_UTC9
2011/10/06 03:35:35
Done.
| |
43 // TODO(yosin) To eliminate confusion with ScopedGetDC, we should rename | 43 class ScopedCreateDC { |
44 // ScopedHDC to ScopedCreateDC. | |
45 class ScopedHDC { | |
46 public: | 44 public: |
47 ScopedHDC() : hdc_(NULL) { } | 45 ScopedCreateDC() : hdc_(NULL) { } |
48 explicit ScopedHDC(HDC h) : hdc_(h) { } | 46 explicit ScopedCreateDC(HDC h) : hdc_(h) { } |
49 | 47 |
50 ~ScopedHDC() { | 48 ~ScopedCreateDC() { |
51 Close(); | 49 Close(); |
52 } | 50 } |
53 | 51 |
54 HDC Get() { | 52 HDC Get() { |
55 return hdc_; | 53 return hdc_; |
56 } | 54 } |
57 | 55 |
58 void Set(HDC h) { | 56 void Set(HDC h) { |
59 Close(); | 57 Close(); |
60 hdc_ = h; | 58 hdc_ = h; |
61 } | 59 } |
62 | 60 |
63 operator HDC() { return hdc_; } | 61 operator HDC() { return hdc_; } |
64 | 62 |
65 private: | 63 private: |
66 void Close() { | 64 void Close() { |
67 #ifdef NOGDI | 65 #ifdef NOGDI |
68 assert(false); | 66 assert(false); |
69 #else | 67 #else |
70 if (hdc_) | 68 if (hdc_) |
71 DeleteDC(hdc_); | 69 DeleteDC(hdc_); |
72 #endif // NOGDI | 70 #endif // NOGDI |
73 } | 71 } |
74 | 72 |
75 HDC hdc_; | 73 HDC hdc_; |
76 DISALLOW_COPY_AND_ASSIGN(ScopedHDC); | 74 DISALLOW_COPY_AND_ASSIGN(ScopedCreateDC); |
77 }; | 75 }; |
78 | 76 |
79 } // namespace win | 77 } // namespace win |
80 } // namespace base | 78 } // namespace base |
81 | 79 |
82 #endif // BASE_WIN_SCOPED_HDC_H_ | 80 #endif // BASE_WIN_SCOPED_HDC_H_ |
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