Class: Win32API
- Inherits:
-
Object
- Object
- Win32API
- Defined in:
- win32/lib/Win32API.rb
Constant Summary collapse
- DLL =
{}
- TYPEMAP =
{"0" => DL::TYPE_VOID, "S" => DL::TYPE_VOIDP, "I" => DL::TYPE_LONG}
- POINTER_TYPE =
DL::SIZEOF_VOIDP == DL::SIZEOF_LONG_LONG ? 'q*' : 'l!*'
Instance Method Summary collapse
- #call(*args) ⇒ Object (also: #Call)
-
#initialize(dllname, func, import, export = "0", calltype = :stdcall) ⇒ Win32API
constructor
A new instance of Win32API.
Constructor Details
#initialize(dllname, func, import, export = "0", calltype = :stdcall) ⇒ Win32API
Returns a new instance of Win32API.
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# File 'win32/lib/Win32API.rb', line 12 def initialize(dllname, func, import, export = "0", calltype = :stdcall) @proto = [import].join.tr("VPpNnLlIi", "0SSI").sub(/^(.)0*$/, '\1') handle = DLL[dllname] ||= DL.dlopen(dllname) @func = DL::CFunc.new(handle[func], TYPEMAP[export.tr("VPpNnLlIi", "0SSI")], func, calltype) rescue DL::DLError => e raise LoadError, e., e.backtrace end |
Instance Method Details
#call(*args) ⇒ Object Also known as: Call
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# File 'win32/lib/Win32API.rb', line 20 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 |