Returns an array of arrays containing information about each display.

Information inside sub-arrays is the following, in order:

• [0] .. [3]: x, y, width, height of the display itself.
  Primary display always has x=0,y=0, meaning that displays to the left of it can have negative coordinates.
• [4] .. [7]: x, y, width, height of the display's "work area".
  That is, the area of the monitor not obscured by the system taskbar or other system-wide docks (MSDN)
• [8]: display bit flags from MONITORINFO as of 2023 the only documented flag is 1 for whether the display is the primary one.
• [9]: The (technical) name of the display.
  Usually something like "\.\DISPLAY1"

If the DLL fails to load (probably because the file isn't there), returns an empty array.

Example:

var arr = display_measure_all();
// note: use array_length_1d in old GM versions
for (var i = 0; i < array_length(arr); i++) {
    var inf = arr[i];
    show_debug_message(inf);
    
    show_debug_message("Name: " + inf[9]);
    
    show_debug_message("Location: "
        + string(inf[2]) + "x" + string(inf[3]) + " at "
        + string(inf[0]) + "," + string(inf[1])
    );
    
    show_debug_message("Work area: "
        + string(inf[6]) + "x" + string(inf[7]) + " at "
        + string(inf[4]) + "," + string(inf[5])
    );
    
    var _primary = (inf[8] & 1) != 0;
    show_debug_message("Is primary: " + string(_primary));
}

For a system with a primary 1440p display and a smaller 1080p one to the left of it, this might show something like the following

[ -1920,540,1920,1080,-1920,540,1920,1040,0,"\\.\DISPLAY1" ]
Name: \\.\DISPLAY1
Location: 1920x1080 at -1920,540
Work area: 1920x1040 at -1920,540
Is primary: 0
[ 0,0,2560,1440,0,0,2560,1400,1,"\\.\DISPLAY2" ]
Name: \\.\DISPLAY2
Location: 2560x1440 at 0,0
Work area: 2560x1400 at 0,0
Is primary: 1