Module: Unknownr::Windows::COM::Helpers

Defined in:
lib/unknownr.rb

Instance Method Summary collapse

Instance Method Details

#QueryInstance(klass) ⇒ Object 



125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
 
# File 'lib/unknownr.rb', line 125

def QueryInstance(klass)
	instance = nil

	FFI::MemoryPointer.new(:pointer) { |ppv|
		QueryInterface(klass::IID, ppv)

		instance = klass.new(ppv.read_pointer)
	}

	begin
		yield instance; return self
	ensure
		instance.Release
	end if block_given?

	instance
end

#UseInstance(klass, name, *args) ⇒ Object 



143
144
145
146
147
148
149
150
151
152
153
154
155
 
# File 'lib/unknownr.rb', line 143

def UseInstance(klass, name, *args)
	instance = nil

	FFI::MemoryPointer.new(:pointer) { |ppv|
		send(name, *args, klass::IID, ppv)

		yield instance = klass.new(ppv.read_pointer)
	}

	self
ensure
	instance.Release if instance
end