create icon in alv grid

hi abap experts,

i want to create icon in alv grid report.that means on a particular field values the icon should be

unique.

for example,

if there is a field known as status with different values (open,close,cancel,approved.................... )

so, if the value is open a particular icon will be displayed.

if the value is closed another icon will be displayed.................................like that.

The icons are displayed at the left of status column dynamically based on the values.

can i know what is the coding for this.

thanks all.