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Class: Win32API

Relationships & Source Files
Inherits: Object
Defined in: ext/win32/lib/Win32API.rb

Constant Summary

Class Method Summary

Instance Method Summary

Constructor Details

.new(dllname, func, import, export = "0", calltype = :stdcall) ⇒ Win32API

[ GitHub ] 

  


# File 'ext/win32/lib/Win32API.rb', line 17



def initialize(dllname, func, import, export = "0", calltype = :stdcall)
  @proto = [import].join.tr(WIN32_TYPES, DL_TYPES).sub(/^(.)0*$/, '\1')
  import = @proto.chars.map {|win_type| TYPEMAP[win_type.tr(WIN32_TYPES, DL_TYPES)]}
  export = TYPEMAP[export.tr(WIN32_TYPES, DL_TYPES)]
  calltype = Fiddle::Importer.const_get(:CALL_TYPE_TO_ABI)[calltype]

  handle = DLL[dllname] ||=
           begin
             Fiddle.dlopen(dllname)
           rescue Fiddle::DLError
             raise unless File.extname(dllname).empty?
             Fiddle.dlopen(dllname + ".dll")
           end

  @func = Fiddle::Function.new(handle[func], import, export, calltype)
rescue Fiddle::DLError => e
  raise LoadError, e.message, e.backtrace
end


  







Instance Method Details



  

    Call(*args)  
  



  

    

Alias for #call.


  



  [ GitHub ]


  

  


# File 'ext/win32/lib/Win32API.rb', line 46



alias Call call


  








  

    #call(*args)  
    Also known as: #Call
  

  [ GitHub ]


  

  


# File 'ext/win32/lib/Win32API.rb', line 36



def call(*args)
  import = @proto.split("")
  args.each_with_index do |x, i|
    args[i], = [x == 0 ? nil : x].pack("p").unpack(POINTER_TYPE) if import[i] == "S"
    args[i], = [x].pack("I").unpack("i") if import[i] == "I"
  end
  ret, = @func.call(*args)
  return ret || 0
end