base/win/win_util.h

   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 // =============================================================================
   6 // PLEASE READ
   7 //
   8 // In general, you should not be adding stuff to this file.
   9 //
  10 // - If your thing is only used in one place, just put it in a reasonable
  11 //   location in or near that one place. It's nice you want people to be able
  12 //   to re-use your function, but realistically, if it hasn't been necessary
  13 //   before after so many years of development, it's probably not going to be
  14 //   used in other places in the future unless you know of them now.
  15 //
  16 // - If your thing is used by multiple callers and is UI-related, it should
  17 //   probably be in app/win/ instead. Try to put it in the most specific file
  18 //   possible (avoiding the *_util files when practical).
  19 //
  20 // =============================================================================
  21
  22 #ifndef BASE_WIN_WIN_UTIL_H_
  23 #define BASE_WIN_WIN_UTIL_H_
  24
  25 #include <windows.h>
  26
  27 #include <string>
  28
  29 #include "base/base_export.h"
  30 #include "base/strings/string16.h"
  31
  32 struct IPropertyStore;
  33 struct _tagpropertykey;
  34 typedef _tagpropertykey PROPERTYKEY;
  35
  36 // This is the same as NONCLIENTMETRICS except that the
  37 // unused member |iPaddedBorderWidth| has been removed.
  38 struct NONCLIENTMETRICS_XP {
  39     UINT    cbSize;
  40     int     iBorderWidth;
  41     int     iScrollWidth;
  42     int     iScrollHeight;
  43     int     iCaptionWidth;
  44     int     iCaptionHeight;
  45     LOGFONTW lfCaptionFont;
  46     int     iSmCaptionWidth;
  47     int     iSmCaptionHeight;
  48     LOGFONTW lfSmCaptionFont;
  49     int     iMenuWidth;
  50     int     iMenuHeight;
  51     LOGFONTW lfMenuFont;
  52     LOGFONTW lfStatusFont;
  53     LOGFONTW lfMessageFont;
  54 };
  55
  56 namespace base {
  57 namespace win {
  58
  59 BASE_EXPORT void GetNonClientMetrics(NONCLIENTMETRICS_XP* metrics);
  60
  61 // Returns the string representing the current user sid.
  62 BASE_EXPORT bool GetUserSidString(std::wstring* user_sid);
  63
  64 // Returns true if the shift key is currently pressed.
  65 BASE_EXPORT bool IsShiftPressed();
  66
  67 // Returns true if the ctrl key is currently pressed.
  68 BASE_EXPORT bool IsCtrlPressed();
  69
  70 // Returns true if the alt key is currently pressed.
  71 BASE_EXPORT bool IsAltPressed();
  72
  73 // Returns true if the altgr key is currently pressed.
  74 // Windows does not have specific key code and modifier bit and Alt+Ctrl key is
  75 // used as AltGr key in Windows.
  76 BASE_EXPORT bool IsAltGrPressed();
  77
  78 // Returns false if user account control (UAC) has been disabled with the
  79 // EnableLUA registry flag. Returns true if user account control is enabled.
  80 // NOTE: The EnableLUA registry flag, which is ignored on Windows XP
  81 // machines, might still exist and be set to 0 (UAC disabled), in which case
  82 // this function will return false. You should therefore check this flag only
  83 // if the OS is Vista or later.
  84 BASE_EXPORT bool UserAccountControlIsEnabled();
  85
  86 // Sets the boolean value for a given key in given IPropertyStore.
  87 BASE_EXPORT bool SetBooleanValueForPropertyStore(
  88     IPropertyStore* property_store,
  89     const PROPERTYKEY& property_key,
  90     bool property_bool_value);
  91
  92 // Sets the string value for a given key in given IPropertyStore.
  93 BASE_EXPORT bool SetStringValueForPropertyStore(
  94     IPropertyStore* property_store,
  95     const PROPERTYKEY& property_key,
  96     const wchar_t* property_string_value);
  97
  98 // Sets the application id in given IPropertyStore. The function is intended
  99 // for tagging application/chromium shortcut, browser window and jump list for
 100 // Win7.
 101 BASE_EXPORT bool SetAppIdForPropertyStore(IPropertyStore* property_store,
 102                                           const wchar_t* app_id);
 103
 104 // Adds the specified |command| using the specified |name| to the AutoRun key.
 105 // |root_key| could be HKCU or HKLM or the root of any user hive.
 106 BASE_EXPORT bool AddCommandToAutoRun(HKEY root_key, const string16& name,
 107                                      const string16& command);
 108 // Removes the command specified by |name| from the AutoRun key. |root_key|
 109 // could be HKCU or HKLM or the root of any user hive.
 110 BASE_EXPORT bool RemoveCommandFromAutoRun(HKEY root_key, const string16& name);
 111
 112 // Reads the command specified by |name| from the AutoRun key. |root_key|
 113 // could be HKCU or HKLM or the root of any user hive. Used for unit-tests.
 114 BASE_EXPORT bool ReadCommandFromAutoRun(HKEY root_key,
 115                                         const string16& name,
 116                                         string16* command);
 117
 118 // Sets whether to crash the process during exit. This is inspected by DLLMain
 119 // and used to intercept unexpected terminations of the process (via calls to
 120 // exit(), abort(), _exit(), ExitProcess()) and convert them into crashes.
 121 // Note that not all mechanisms for terminating the process are covered by
 122 // this. In particular, TerminateProcess() is not caught.
 123 BASE_EXPORT void SetShouldCrashOnProcessDetach(bool crash);
 124 BASE_EXPORT bool ShouldCrashOnProcessDetach();
 125
 126 // Adjusts the abort behavior so that crash reports can be generated when the
 127 // process is aborted.
 128 BASE_EXPORT void SetAbortBehaviorForCrashReporting();
 129
 130 // A tablet is a device that is touch enabled and also is being used
 131 // "like a tablet".  This is used primarily for metrics in order to gain some
 132 // insight into how users use Chrome.
 133 BASE_EXPORT bool IsTabletDevice();
 134
 135 // A slate is a touch device that may have a keyboard attached. This function
 136 // returns true if a keyboard is attached and optionally will set the reason
 137 // parameter to the detection method that was used to detect the keyboard.
 138 BASE_EXPORT bool IsKeyboardPresentOnSlate(std::string* reason);
 139
 140 // Get the size of a struct up to and including the specified member.
 141 // This is necessary to set compatible struct sizes for different versions
 142 // of certain Windows APIs (e.g. SystemParametersInfo).
 143 #define SIZEOF_STRUCT_WITH_SPECIFIED_LAST_MEMBER(struct_name, member) \
 144     offsetof(struct_name, member) + \
 145     (sizeof static_cast<struct_name*>(NULL)->member)
 146
 147 // Displays the on screen keyboard on Windows 8 and above. Returns true on
 148 // success.
 149 BASE_EXPORT bool DisplayVirtualKeyboard();
 150
 151 // Dismisses the on screen keyboard if it is being displayed on Windows 8 and.
 152 // above. Returns true on success.
 153 BASE_EXPORT bool DismissVirtualKeyboard();
 154
 155 // Returns true if the machine is enrolled to a domain.
 156 BASE_EXPORT bool IsEnrolledToDomain();
 157
 158 // Used by tests to mock any wanted state. Call with |state| set to true to
 159 // simulate being in a domain and false otherwise.
 160 BASE_EXPORT void SetDomainStateForTesting(bool state);
 161
 162 // Returns true if the current operating system has support for SHA-256
 163 // certificates. As its name indicates, this function provides a best-effort
 164 // answer, which is solely based on comparing version numbers. The function
 165 // may be re-implemented in the future to return a reliable value, based on
 166 // run-time detection of this capability.
 167 BASE_EXPORT bool MaybeHasSHA256Support();
 168
 169 }  // namespace win
 170 }  // namespace base
 171
 172 #endif  // BASE_WIN_WIN_UTIL_H_