Bitmap-Width
This property identifies the width in pixels of the image displayed in the Check-Box control. The bitmap strip identified by the Bitmap-Handle property is divided into several smaller images. The width of each image is the value assigned to this property.
 
Example - Define a checkbox in screen section and define the width of each bitmap on a image containing many
screen section.
...
03 screen-1-cb-2 Check-Box
   line 27.0
   column 10.0
   size 116
   lines 31
   id 11
   flat
   title "My Check Box"
   bitmap-handle my-cb-png
   bitmap-number 1
   bitmap-width 20
   title-position 2
   bitmap-selected 2
   .