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.
If this property is omitted, then the Size property is used to specify the width of the image.
 
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
   .