Module: WinGdi32Ruby

Includes:
Win32
Defined in:
lib/gdi32/system_const.rb,
lib/win-gdi32-ruby.rb

Overview

Author

Jerry Fernholz

Date

21 May 2009

Constants related to the Win32 API

Defined Under Namespace

Classes: Gdi32

Constant Summary collapse

SRCCOPY =

:nodoc: dest = source

0x00CC0020
SRCPAINT =

:nodoc: dest = source OR dest

0x00EE0086
SRCAND =

:nodoc: dest = source AND dest

0x008800C6
SRCINVERT =

:nodoc: dest = source XOR dest

0x00660046
SRCERASE =

:nodoc: dest = source AND (NOT dest )

0x00440328
NOTSRCCOPY =

:nodoc: dest = (NOT source)

0x00330008
NOTSRCERASE =

:nodoc: dest = (NOT src) AND (NOT dest)

0x001100A6
MERGECOPY =

:nodoc: dest = (source AND pattern)

0x00C000CA
MERGEPAINT =

:nodoc: dest = (NOT source) OR dest

0x00BB0226
PATCOPY =

:nodoc: dest = pattern

0x00F00021
PATPAINT =

:nodoc: dest = DPSnoo

0x00FB0A09
PATINVERT =

:nodoc: dest = pattern XOR dest

0x005A0049
DSTINVERT =

:nodoc: dest = (NOT dest)

0x00550009
BLACKNESS =

:nodoc: dest = BLACK

0x00000042
WHITENESS =

:nodoc: dest = WHITE

0x00FF0062

Instance Method Summary collapse

Instance Method Details

#bitmap_helper(name, param_type, return_value) ⇒ Object 



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# File 'lib/win-gdi32-ruby.rb', line 27

def bitmap_helper(name, param_type, return_value)
  path = File.expand_path(File.dirname(__FILE__))
  sb = API.new name, param_type, return_value, path + '/BitmapHelper.dll'
end

#bytewise_file_compare(fn1, fn2) ⇒ Object 



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# File 'lib/win-gdi32-ruby.rb', line 162

def bytewise_file_compare(fn1, fn2)
  # Open both files as binary
  begin
    f1, f2 = File.open(fn1, 'rb'), File.open(fn2, 'rb')
  rescue => e
    puts e
    return false
  end
      
  # Assume they don't match
  same = false
  i, fs1, fs2 = 0, File.stat(fn1), File.stat(fn2)
  if fs1.size == fs2.size
    same = true

    bytes1 = []
    f1.each_byte{|b| bytes1 << b}

    f2.each_byte do |b|
      if bytes1[i] != b
        same = false
      end
      i += 1
    end
  end

  same
end

#gdi32(name, param_type, return_value) ⇒ Object

Wrap the API call to functions in ‘gdi32.dll’ so we don’t have to call API.new 'gdi32' ... repeatedly

name

Name of the Win32 function to be called

param_type

Array of parameter type hints

return_value

Type hint for the return value

Example: gdi32 'CreateDC', 'SSSP', 'L'



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# File 'lib/win-gdi32-ruby.rb', line 23

def gdi32(name, param_type, return_value)
  API.new name, param_type, return_value, 'gdi32'
end