• On macOS, we can use the CoreGraphics framework and call CGDisplayAvailableRect.
  
• On Linux, we use the libX11 library to query the _NET_WORKAREA property from the root window, which is the standard way to get the usable desktop area (excluding panels, docks, etc.) on modern X11 desktops.
  

' auto detect screen size



screen _newimage(8000,8000,32)      ' set a screen too large

_fullscreen , _smooth              ' go to fullscreen

_delay 2                            ' wait 2 second 

height% = _resizeheight            ' get max screen height

width% = _resizewidth              ' get max screen width



$console

_dest _console : ? "screen resolution is ";width%;"x";height%

system

'''''''''''''''''''''''''''''''''''''''''''''''''''''''

' get window and frame dimensions and positions

' on linux X11 (not tested with Wayland)

'''''''''''''''''''''''''''''''''''''''''''''''''''''''



' get time to name the window with a unique name

a$ = _tostr$(timer(0.001))

_title a$



screen _newimage(640,480,32)

? "move (or not) this window then hit ENTER key to get window informations"



do : k = inp(96) : loop until k=28



' get the desktop real size (do not include the taskbar)

shell "xprop -root _NET_WORKAREA | grep -oP '\d+' > " + a$ + "_workarea.txt"

open a$+"_workarea.txt" for input as #1

dim ra(1 to 4) as integer

i% = 1

do until eof(1)

    input #1, c$

    ra(i%) = val(c$)

    i% = i% + 1

loop

close #1

desktopLeft% = ra(1)

desktopTop% = ra(2)

desktopRight% = ra(3)

desktopBottom% = ra(4)

shell "rm "+a$+"_workarea.txt"



' get the current window title bar height and border size

shell "xwininfo -stats -name " + a$ + "| grep 'Relative ' | grep -oP '\d+' > " + a$ + "_corners_relative.txt"

open a$+"_corners_relative.txt" for input as #1

dim rc(1 to 2) as integer

i% = 1

do until eof(1)

    input #1, c$

    rc(i%) = val(c$)

    i% = i% + 1

loop

close #1

borderSize% = rc(1)

titlebarHeight% = rc(2)

shell "rm "+a$+"_corners_relative.txt"



' get the current window coordinates and inner frame too

shell "xwininfo -stats -name " + a$ + "| grep 'Corners:' | grep -oP '[+-]\d+' > " + a$ + "_corners_stats.txt"

open a$+"_corners_stats.txt" for input as #1

dim rb(1 to 8) as integer

i% = 1

do until eof(1)

    input #1, c$

    rb(i%) = val(c$)

    i% = i% + 1

loop

close #1

frameLeft% = rb(1)

windowLeft% = frameLeft% - borderSize%

frameTop% = rb(2)

windowTop% = frameTop% - titlebarHeight%

frameRight% = _desktopWidth + rb(3)

windowRight% = frameRight% + borderSize%

frameBottom% = _desktopHeight + rb(6)

windowBottom% = frameBottom% + borderSize%

shell "rm "+a$+"_corners_stats.txt"



' print results

?

? "desktop width    :";_desktopWidth

? "desktop height  :";_desktopheight

?

? "desktop left    :";desktopLeft%

? "desktop top      :";desktopTop%

? "desktop right    :";desktopRight%

? "desktop bottom  :";desktopBottom%

?

? "window width    :";_width

? "window height    :";_height

?

? "frame left      :";frameLeft%

? "frame top        :";frameTop%

? "frame right      :";frameRight%

? "frame bottom    :";frameBottom%

?

? "border size      :";borderSize%

? "title bar height :";titlebarHeight%

?

? "window left      :";windowLeft%

? "window top      :";windowTop%

? "window right    :";windowRight%

? "window bottom    :";windowBottom%

?



end

(10-31-2025, 11:24 PM)Herve Wrote: I use this code to get the screen dimensions; maybe it will help you solve your problem. I'm on Linux — does it work on Windows and macOS?

(11-02-2025, 10:01 PM)Herve Wrote: @madscijr, maybe a solution for linux version?
By using two X11 utilities, we can retrieve some useful information.
With xprop we get the actual desktop dimensions (the taskbar is not included).
With xwininfo we get the window dimensions, the height of the title bar, and the size of the borders.
This is an X11 solution; it should be tested with Wayland.
[/qb]

(11-10-2025, 02:52 PM)bplus Wrote: Doesnt desktop height and width get the same thing in Windows?

Code: (Select All)

' auto detect max screen size
Screen _NewImage(800, 600, 32) ' set a screen too large
_FullScreen , _Smooth ' go to fullscreen
_Delay 2 ' wait 2 second
height% = _ResizeHeight ' get max screen height
width% = _ResizeWidth ' get max screen width
_Dest 0
Cls
Print "screen resolution is "; width%; "x"; height%
Print " Desktop W, H:"; _DesktopWidth, _DesktopHeight
Sleep
System

Yes, yes it does in my win 10 anyway.

• the Screen _NewImage command specifies 800x600, and 
  
• you can see from the font size in the screenshot, the text is large like it would appear on an 800x600 screen,