1. Find out PID of your AP, issue "pidin -fa -p MapKit_QNX_CAR2_ccc | grep [0123456789]";
1607868564 
2. Issue "#cd /dev/screen/1607868564", go into your screen resources folder;
3. Issue "ls", and go into win-nn folder;
4. List files, win-nn-1.bmp & win-nn-2.bmp are snapshot of your AP;
5. cat win-nn, get the exact informaiton of your screen resources;

# cat win-11
type = SCREEN_APPLICATION_WINDOW
autonomous = 0
status = WIN_STATUS_VISIBLE
replaced = 0
references = 1
id string = 
display id = 1
plane id = 3
parent = (none)
children = (none)
window above = (none)
window below = win-6
reclip = 0
updates = 0
locked = 0
valid = 0x0000001c
class = 
flags = WIN_FLAG_VISIBLE|!WIN_FLAG_STATIC|!WIN_FLAG_PREMULTIPLIED|!WIN_FLAG_FLOATING
buffer size = 1024x600