How to set focus frames for EDSDK?

Hi, I’m currently working with Canon EDSDK and got almost full controls. But I can’t figure out a way to set AF frame for the liveview.
There’s a struct named EdsFocusPoint which includes a rectangle of the AF frame, but seems like it’s just designed for getting kEdsPropID_FocusInfo, not for setting.
Does anyone know that are there any ways to set EdsFocusPoint?

Thanks!

Solved! We have to pass EdsPoint for the prop kEdsPropID_Evf_ZoomPosition like this:

EdsPoint point_ = { 100, 100 };
EdsSetPropertyData(cameraRef, kEdsPropID_Evf_ZoomPosition, 0, sizeof(point_), &point_);

Thanks.