Mercurial > hg
annotate mercurial/win32.py @ 13324:e5617047c926
subrepo: make update -C clean the working directory for git subrepos
This makes 'hg update --clean' behave the same way for all three kinds
of subrepositories [hg, svn, git]. Before git subrepos did not take
the clean parameter into account, but just updated to the given
revision and merged uncommitted changes into that.
author | Erik Zielke <ez@aragost.com> |
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date | Mon, 31 Jan 2011 13:40:05 +0100 |
parents | 2ef915184ff2 |
children | 1c613c1ae43d |
rev | line source |
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1 # win32.py - utility functions that use win32 API |
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2 # |
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3 # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 """Utility functions that use win32 API. |
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9 |
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10 Mark Hammond's win32all package allows better functionality on |
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11 Windows. This module overrides definitions in util.py. If not |
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12 available, import of this module will fail, and generic code will be |
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13 used. |
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14 """ |
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15 |
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16 import win32api |
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17 |
6216 | 18 import errno, os, sys, pywintypes, win32con, win32file, win32process |
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19 import winerror, win32gui, win32console |
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20 import osutil, encoding |
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21 from win32com.shell import shell, shellcon |
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22 |
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23 def os_link(src, dst): |
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24 try: |
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25 win32file.CreateHardLink(dst, src) |
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26 except pywintypes.error: |
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27 raise OSError(errno.EINVAL, 'target implements hardlinks improperly') |
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28 except NotImplementedError: # Another fake error win Win98 |
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29 raise OSError(errno.EINVAL, 'Hardlinking not supported') |
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30 |
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31 def _getfileinfo(pathname): |
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32 """Return number of hardlinks for the given file.""" |
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33 try: |
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34 fh = win32file.CreateFile(pathname, |
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35 win32file.GENERIC_READ, win32file.FILE_SHARE_READ, |
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36 None, win32file.OPEN_EXISTING, 0, None) |
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37 except pywintypes.error: |
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38 raise OSError(errno.ENOENT, 'The system cannot find the file specified') |
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39 try: |
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40 return win32file.GetFileInformationByHandle(fh) |
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41 finally: |
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42 fh.Close() |
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43 |
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44 def nlinks(pathname): |
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45 """Return number of hardlinks for the given file.""" |
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46 return _getfileinfo(pathname)[7] |
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47 |
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48 def samefile(fpath1, fpath2): |
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49 """Returns whether fpath1 and fpath2 refer to the same file. This is only |
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50 guaranteed to work for files, not directories.""" |
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51 res1 = _getfileinfo(fpath1) |
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52 res2 = _getfileinfo(fpath2) |
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53 # Index 4 is the volume serial number, and 8 and 9 contain the file ID |
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54 return res1[4] == res2[4] and res1[8] == res2[8] and res1[9] == res2[9] |
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55 |
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56 def samedevice(fpath1, fpath2): |
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57 """Returns whether fpath1 and fpath2 are on the same device. This is only |
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58 guaranteed to work for files, not directories.""" |
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59 res1 = _getfileinfo(fpath1) |
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60 res2 = _getfileinfo(fpath2) |
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61 return res1[4] == res2[4] |
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62 |
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63 def testpid(pid): |
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64 '''return True if pid is still running or unable to |
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65 determine, False otherwise''' |
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66 try: |
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67 handle = win32api.OpenProcess( |
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68 win32con.PROCESS_QUERY_INFORMATION, False, pid) |
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69 if handle: |
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70 status = win32process.GetExitCodeProcess(handle) |
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71 return status == win32con.STILL_ACTIVE |
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72 except pywintypes.error, details: |
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73 return details[0] != winerror.ERROR_INVALID_PARAMETER |
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74 return True |
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75 |
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76 def lookup_reg(key, valname=None, scope=None): |
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77 ''' Look up a key/value name in the Windows registry. |
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78 |
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79 valname: value name. If unspecified, the default value for the key |
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80 is used. |
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81 scope: optionally specify scope for registry lookup, this can be |
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82 a sequence of scopes to look up in order. Default (CURRENT_USER, |
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83 LOCAL_MACHINE). |
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84 ''' |
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85 try: |
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86 from _winreg import HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE, \ |
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87 QueryValueEx, OpenKey |
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88 except ImportError: |
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89 return None |
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90 |
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91 if scope is None: |
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92 scope = (HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE) |
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93 elif not isinstance(scope, (list, tuple)): |
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94 scope = (scope,) |
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95 for s in scope: |
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96 try: |
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97 val = QueryValueEx(OpenKey(s, key), valname)[0] |
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98 # never let a Unicode string escape into the wild |
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99 return encoding.tolocal(val.encode('UTF-8')) |
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100 except EnvironmentError: |
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101 pass |
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102 |
2117 | 103 def system_rcpath_win32(): |
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104 '''return default os-specific hgrc search path''' |
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105 filename = win32api.GetModuleFileName(0) |
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106 # Use mercurial.ini found in directory with hg.exe |
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107 progrc = os.path.join(os.path.dirname(filename), 'mercurial.ini') |
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108 if os.path.isfile(progrc): |
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109 return [progrc] |
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110 # Use hgrc.d found in directory with hg.exe |
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111 progrcd = os.path.join(os.path.dirname(filename), 'hgrc.d') |
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112 if os.path.isdir(progrcd): |
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113 rcpath = [] |
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114 for f, kind in osutil.listdir(progrcd): |
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115 if f.endswith('.rc'): |
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116 rcpath.append(os.path.join(progrcd, f)) |
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117 return rcpath |
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118 # else look for a system rcpath in the registry |
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119 try: |
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120 value = win32api.RegQueryValue( |
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121 win32con.HKEY_LOCAL_MACHINE, 'SOFTWARE\\Mercurial') |
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122 rcpath = [] |
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123 for p in value.split(os.pathsep): |
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124 if p.lower().endswith('mercurial.ini'): |
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125 rcpath.append(p) |
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126 elif os.path.isdir(p): |
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127 for f, kind in osutil.listdir(p): |
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128 if f.endswith('.rc'): |
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129 rcpath.append(os.path.join(p, f)) |
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130 return rcpath |
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131 except pywintypes.error: |
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132 return [] |
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133 |
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134 def user_rcpath_win32(): |
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135 '''return os-specific hgrc search path to the user dir''' |
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136 userdir = os.path.expanduser('~') |
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137 if sys.getwindowsversion()[3] != 2 and userdir == '~': |
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138 # We are on win < nt: fetch the APPDATA directory location and use |
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139 # the parent directory as the user home dir. |
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140 appdir = shell.SHGetPathFromIDList( |
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141 shell.SHGetSpecialFolderLocation(0, shellcon.CSIDL_APPDATA)) |
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142 userdir = os.path.dirname(appdir) |
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143 return [os.path.join(userdir, 'mercurial.ini'), |
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144 os.path.join(userdir, '.hgrc')] |
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145 |
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146 def getuser(): |
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147 '''return name of current user''' |
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148 return win32api.GetUserName() |
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149 |
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150 def set_signal_handler_win32(): |
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151 """Register a termination handler for console events including |
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152 CTRL+C. python signal handlers do not work well with socket |
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153 operations. |
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154 """ |
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155 def handler(event): |
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156 win32process.ExitProcess(1) |
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157 win32api.SetConsoleCtrlHandler(handler) |
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158 |
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159 def hidewindow(): |
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160 def callback(*args, **kwargs): |
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161 hwnd, pid = args |
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162 wpid = win32process.GetWindowThreadProcessId(hwnd)[1] |
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163 if pid == wpid: |
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164 win32gui.ShowWindow(hwnd, win32con.SW_HIDE) |
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165 |
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166 pid = win32process.GetCurrentProcessId() |
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167 win32gui.EnumWindows(callback, pid) |
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168 |
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169 def termwidth(): |
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170 try: |
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171 # Query stderr to avoid problems with redirections |
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172 screenbuf = win32console.GetStdHandle(win32console.STD_ERROR_HANDLE) |
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173 if screenbuf is None: |
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174 return 79 |
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175 try: |
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176 window = screenbuf.GetConsoleScreenBufferInfo()['Window'] |
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177 width = window.Right - window.Left |
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178 return width |
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179 finally: |
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180 screenbuf.Detach() |
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181 except pywintypes.error: |
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182 return 79 |