Você pode usar um private.xml assim com o KeyRemap4MacBook:
<?xml version="1.0"?>
<root>
<item>
<name>test</name>
<identifier>test</identifier>
<autogen>__SimultaneousKeyPresses__ KeyCode::Q, KeyCode::W, KeyCode::E</autogen>
</item>
</root>
Por mais de duas chaves, use @begin
e @end
:
__SimultaneousKeyPresses__
@begin
KeyCode::Q, KeyCode::W, KeyCode::E
@end
@begin
KeyCode::R
@end
Isso faria com que pressionar F e eu abrimos simultaneamente o Finder:
<vkopenurldef>
<name>KeyCode::VK_OPEN_URL_FINDER</name>
<url>file:///System/Library/CoreServices/Finder.app</url>
</vkopenurldef>
<item>
<name>test</name>
<identifier>test</identifier>
<autogen>__SimultaneousKeyPresses__ KeyCode::F, KeyCode::I, KeyCode::VK_OPEN_URL_FINDER</autogen>
</item>
Consulte o link para obter mais exemplos.