At the moment TCI enabled CW keyers, such as the one in SDC, can only send macros with real-time keyboard presses not sent until 'enter' is pressed. However that should be corrected when we see the upgraded TCI in ESDR3.
You see above the F keys will send the relevant macro but the free text 'ee' is not sent until send or enter is pressed which is not lke a Winkey emulation. But soon, it will be - Roman already stated this in another Forum message.