API and keyboard events

I need to double up or down the channel obtained by pressing the ctrl key to move the trend line, but the current API does not allow to handle keyboard events. This whole operation has two steps. The first step is to move the trend line to get the channel, which can be obtained through the shortcut key ctrl that comes with ctrader, but the formed channel is doubled up or down. I don’t know how to achieve it. Can anyone help me? Thank you.