I want when I resize form, in horizontal position, with mouse the objects of form must change there width.

The problem is that you do not understand what my code does. It is not a resizer. It is code that instantiates the form at the appropriate size depending on the resolution of the monitor that it is running on.

Did you not see that result?

If you want a resizer, you can download one from the files section here. There are lots of them.