I finally got to stretch the image to full screen With the help of the people on this forum.
Now I have a new problem
I created a new family and added there all the objects that I need. the family name is "FallButtons"
After Stretching the picture to full screen i add code to change location and size of all "FallButtons" controls, It works great But If I run it on a computer with a different resolution The arrangement of the controls are not working well.
my resolution 1366X768 It works great.
All other resolutions are not working well.
my Code