Class: Win32API

Inherits:
Object
  • Object
show all
Defined in:
lib/dl/win32.rb

Constant Summary collapse

DLL = 
{}

Instance Method Summary collapse

Constructor Details

#initialize(dllname, func, import, export = "0")) ⇒ Win32API

Returns a new instance of Win32API.



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# File 'lib/dl/win32.rb', line 8

def initialize(dllname, func, import, export = "0")
  prototype = (export + import.to_s).tr("VPpNnLlIi", "0SSI").sub(/^(.)0*$/, '\1')
  handle = DLL[dllname] ||= DL::Handle.new(dllname)
  @sym = handle.sym(func, prototype)
end

Instance Method Details

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



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# File 'lib/dl/win32.rb', line 14

def call(*args)
  import = @sym.proto.split("", 2)[1]
  args.each_with_index do |x, i|
    args[i] = nil if x == 0 and import[i] == ?S
    args[i], = [x].pack("I").unpack("i") if import[i] == ?I
  end
  ret, = @sym.call(*args)
  return ret || 0
end