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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 UI_BASE_WIN_HWND_UTIL_H_ | |
6 #define UI_BASE_WIN_HWND_UTIL_H_ | |
7 | |
8 #include <windows.h> | |
9 | |
10 #include "base/strings/string16.h" | |
11 #include "ui/base/ui_export.h" | |
12 | |
13 namespace gfx { | |
14 class Point; | |
15 class Size; | |
16 } | |
17 | |
18 namespace ui { | |
19 | |
20 // A version of the GetClassNameW API that returns the class name in an | |
21 // string16. An empty result indicates a failure to get the class name. | |
22 UI_EXPORT string16 GetClassName(HWND hwnd); | |
23 | |
24 // Useful for subclassing a HWND. Returns the previous window procedure. | |
25 UI_EXPORT WNDPROC SetWindowProc(HWND hwnd, WNDPROC wndproc); | |
26 | |
27 // Pointer-friendly wrappers around Get/SetWindowLong(..., GWLP_USERDATA, ...) | |
28 // Returns the previously set value. | |
29 UI_EXPORT void* SetWindowUserData(HWND hwnd, void* user_data); | |
30 UI_EXPORT void* GetWindowUserData(HWND hwnd); | |
31 | |
32 // Returns true if the specified window is the current active top window or one | |
33 // of its children. | |
34 UI_EXPORT bool DoesWindowBelongToActiveWindow(HWND window); | |
35 | |
36 // Sizes the window to have a window size of |pref|, then centers the window | |
37 // over |parent|, ensuring the window fits on screen. | |
38 UI_EXPORT void CenterAndSizeWindow(HWND parent, | |
39 HWND window, | |
40 const gfx::Size& pref); | |
41 | |
42 // If |hwnd| is NULL logs various thing and CHECKs. Invoke right after calling | |
43 // CreateWindow. | |
44 UI_EXPORT void CheckWindowCreated(HWND hwnd); | |
45 | |
46 // Shows |window|'s system menu (at a specified |point| in screen coordinates). | |
47 UI_EXPORT void ShowSystemMenu(HWND window); | |
48 UI_EXPORT void ShowSystemMenuAtPoint(HWND window, const gfx::Point& point); | |
49 | |
50 // Returns the window you can use to parent a top level window. | |
51 // Note that in some cases we create child windows not parented to its final | |
52 // container so in those cases you should pass true in |get_real_hwnd|. | |
53 UI_EXPORT HWND GetWindowToParentTo(bool get_real_hwnd); | |
54 | |
55 } // namespace ui | |
56 | |
57 #endif // UI_BASE_WIN_HWND_UTIL_H_ | |
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