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bzrlib/win32console.py
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   ctypes = None
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WIN32_STDIN_HANDLE = -10
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WIN32_STDOUT_HANDLE = -11
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WIN32_STDERR_HANDLE = -12
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def get_console_size(defaultx=80, defaulty=25):
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   """ Return size of current console.
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       # no ctypes is found
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       return (defaultx, defaulty)
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   # To avoid problem with redirecting output via pipe
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   # need to use stderr instead of stdout
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   h = ctypes.windll.kernel32.GetStdHandle(WIN32_STDERR_HANDLE)
 
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   h = ctypes.windll.kernel32.GetStdHandle(-11)
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   csbi = ctypes.create_string_buffer(22)
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   res = ctypes.windll.kernel32.GetConsoleScreenBufferInfo(h, csbi)
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