A Ruby library that adds some core FFI and String methods to supplement development of Ruby libraries on Windows.

gem install ffi-win32-extensions

The following FFI::MemoryPointer methods have been added:

• read_array_of_string - For reading char** types.
• read_wide_string - Similar to read_string but for wide char* types.

The following FFI module functions have been added:

• windows_error_message - A Windows specific error string using FormatMessage.
• raise_windows_error - Raises a windows specific error using windows_error_message.

The following String instance methods have been added:

• wincode - Converts a string to UTF-16LE for use in wide char functions.
• wstrip - Like String#strip, but for wide strings.
• read_wide_string - Reads a Ruby string up to the first double null.

require 'ffi/win32/extensions'

str = old_string.wincode rv = SomeWideFunctionW(str)

unless rv == 0
  FFI.raise_windows_error('SomeWindowsFunction', rv)
end

(C) 2016 Daniel J. Berger, All Rights Reserved

This package is provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose.

Apache 2.0

Daniel Berger