macOS how to view the controls?

hi all,

I am working in a carbon c++ application using XCode.

I changed my window size to small using resizewindow() and moved window to my required position using movewindow() function.

When i click a button, again my window have to come in previous position with its previous size.

So again i used resizewindow() and movewindow().

In original size window i have four edit text box controls.

When i resized to small size, only two controls are viewable.

Again when i changed to orignal size, only that two controls are enabled.

The other two controls are not enabled.

how can i view or enable other two controls?

Thanks in advance........