Detecting screen resolution

[Qazy147]

Maybe this function will be useful:

GetMaxResolution.au3.txt

[ghost]

This check can get quite complicated with different numbers of displays and aspect ratios.
I'm thinking it's pretty much the same as the CPU Frequency requirement in that nobody actually fails it.
So doing the work and dealing with the support tickets probably isn't worth it.
The requirement:
High definition (720p) display that is greater than 9” diagonally, 8 bits per colour channel

[Qazy147]

I can easily modify function to return number of all monitor, number of monitors, which can be set to 1280x720 or higher and how much monitors can't. Physical dimensions can be probably obtained too.

[Qazy147]

Here is function to detect display size in inches:

Func _GetDisplaySize()
; $out[0][0] = number of displays
; $out[x][1] = size of display X
    Local $out[1][2]=[[0,"Size"]]
    Local $Obj_WMIService = ObjGet('winmgmts:\\' & @ComputerName & '\root\wmi')
    If @error or (Not IsObj($Obj_WMIService)) Then Return SetError(1, 0, $out)
    Local $Col_Items = $Obj_WMIService.ExecQuery('Select MaxHorizontalImageSize,MaxVerticalImageSize from WmiMonitorBasicDisplayParams')
    If @error or (Not IsObj($Obj_WMIService)) Then Return SetError(2, 0, $out)
    For $i in $Col_Items
        $out[0][0] += 1
        ReDim $out[$out[0][0]+1][2]
        $out[$out[0][0]][0] = $out[0][0]
        If ($i.MaxHorizontalImageSize = 0) or ($i.MaxVerticalImageSize = 0) Then
            $out[$out[0][0]][1] = "Unknown"
        Else
            $out[$out[0][0]][1] = Round(Sqrt($i.MaxHorizontalImageSize^2 + $i.MaxVerticalImageSize^2) / 2.54)
        EndIf
    Next
    Return $out
EndFunc

It returns array, but can by modified. E.g. to return single number as size of given display.

Func _GetDisplaySize($DisplayNumber)
    Local $out[1][2]=[[0,"Size"]]
    Local $Obj_WMIService = ObjGet('winmgmts:\\' & @ComputerName & '\root\wmi')
    If @error or (Not IsObj($Obj_WMIService)) Then Return SetError(1, 0, "Detection Error")
    Local $Col_Items = $Obj_WMIService.ExecQuery('Select MaxHorizontalImageSize,MaxVerticalImageSize from WmiMonitorBasicDisplayParams')
    If @error or (Not IsObj($Obj_WMIService)) Then Return SetError(2, 0, "Detection Error")
    For $i in $Col_Items
        $out[0][0] += 1
        ReDim $out[$out[0][0]+1][2]
        $out[$out[0][0]][0] = $out[0][0]
        If ($i.MaxHorizontalImageSize = 0) or ($i.MaxVerticalImageSize = 0) Then
            $out[$out[0][0]][1] = "Unknown"
        Else
            $out[$out[0][0]][1] = Round(Sqrt($i.MaxHorizontalImageSize^2 + $i.MaxVerticalImageSize^2) / 2.54)
        EndIf
    Next
    If ($DisplayNumber > 0) and ($DisplayNumber <= $out[0][0]) Then Return $out[$DisplayNumber][1]
    Return "Display " & $DisplayNumber & " undetected"
EndFunc

[Qazy147]

I have a question. I would like to write function to test resolution and dimensions for connected displays. Should it test current resolution or maximal / native resolution?
It would look like this

Func _GetDisplayInfo($minWidht = 1366, $minHeight = 768, $minInches = 9)

As result would be array:
[0] = total number of monitors
[1] = number of bigger or same size monitors
[2] = number of smaller monitors
[3] = number of monitor with undetected parameters

Would it be helpful or it's not worth it?

[Qazy147]

I completed display properties detection function, but it needs some testing (I have only one monitor right now). What should be input and how should output look like?
GetMaxResolution.au3.txt

[rcmaehl]

I'll take a look in the morning

[Qazy147]

Improved version with capability to save results into file.
GetMaxResolution.au3.txt

[rcmaehl]

@Qazy147 I'll look into getting this added into the advanced checks section I'm adding.

Is
[0] = total number of monitors
[1] = number of bigger or same size monitors
[2] = number of smaller monitors
[3] = number of monitor with undetected parameters

Still the return array?

Can you modify it to

[0] = total number of monitors
[1] = number of compliant monitors
[2] = number of lower resolution monitors
[3] = number of physically smaller monitors
[4] = number of monitors with less than 8 bits per color
[4] = number of monitor with undetected parameters

[Qazy147]

Yes, I can modify it, but there is one catch. What exactly mean "8 bits per color channel". For example my notebook can be set to 1920 x 1080 x 32 bits, but according EDID LCD panel has only 6 bits per color. So based on resolution which I can set it's compliant (assuming there is always 3 color channels), but according EDID it's not compliant.

[Qazy147]

First version
_MonitorInfo.au3.txt