Determine if a window is on second monitor

[fspafford]

How can I determine if a window is on my second monitor? I have two monitors. I know about WinGetPos, but how do I get information about the two monitors?

[BrewManNH]

If the X position is greater than the X dimensions of the first monitor, it's more than probable it's on the second one.

Example, you have 2 monitors, 1440x900 resolution, WinGetPos tells you that the X position of the window is at 2000, then from that you can determine that it's on the second monitor.

[kaotkbliss]

Sometimes the 2nd monitor uses negative coordinates (-800,-600 for example)

[Mechaflash]

$aPos = WinGetPos("Window Title")
If $aPos[0] < 0 Or $aPos[0] > @DesktopWidth Then
  msgbox(0,"","It's on your second monitor")
Else
  msgbox(0,"","It's on your main monitor")
EndIf

Edited October 4, 2012 by Mechaflash

[UEZ]

$aPos = WinGetPos("Window Title")
If $aPos[0] < 0 Or $aPos[0] > @DesktopWidth Then
  msgbox(0,"","It's on your second monitor")
Else
  msgbox(0,"","It's on your main monitor")
EndIf

That will only work if your second monitor is on the left or right side of your main monitor. It will not work e.g. if your second monitor is up above.

Br,

UEZ

Edited October 5, 2012 by UEZ

[BrewManNH]

I suppose in cases where the monitors are above and below, you could use [1] and @DesktopHeight instead of [0] and @DesktopWidth, should work equally as well.

[Mechaflash]

$aPos = WinGetPos("Window Title")
If $aPos[0] < 0 Or $aPos[0] > @DesktopWidth Or $aPos[1] < 0 Or $aPos[1] > @DesktopHeight Then
  msgbox(0,"","It's on your second monitor")
Else
  msgbox(0,"","It's on your main monitor")
EndIf

=/

EDIT:

or

$aPos = WinGetPos("Window Title")
If ($aPos[0] < @DesktopDir And $aPos[0] > 0) Or ($aPos[1] < @DesktopWidth And $aPos[1] > 0) Then
  msgbox(0,"","It's on your main monitor")
Else
  msgbox(0,"","It's on your second monitor")
EndIf

Edited October 5, 2012 by Mechaflash

[BrewManNH]

Mechaflash, I'm not sure that would work because if you have 2 monitors and drag a window around to get its position, you'll see that often times, on a left-right monitor set up, the $apos[1] is going to be negative. This is especially true if the two monitors have different resolutions.

[kaotkbliss]

There are some functions by xrxca (search the forums) that grab useful info for multi-monitor setups and I've modified his functions to figure out which monitor my Gui was on. Unfortunately it would take a bit of time to untangle the functions from my code and create a generic working example for you.

[Mechaflash]

I created a personal UDF a while ago that will enumerate all Real monitors. It's made only for monitors stacked side-by-side. It returns an array. 0 index is the total monitor count. 1-n goes left to right based on the X position value.

#include-once

#include <Display_Library_Functions.au3>
#include <Array.au3>

Func _MonitorMapping()
    Local $aDisplay, $aMonitors

    $aDisplay = _DisplayKeySettings(0)
    For $i = 1 To $aDisplay[0][0]
        If StringInStr($aDisplay[$i][1], "DISPLAYV") And $aDisplay[$i][7] = 0 Then
            _ArrayDelete($aDisplay, $i)
            $aDisplay[0][0]-=1
            If $i <= $aDisplay[0][0] Then ExitLoop
        EndIf
    Next

    Dim $aMonitors[UBound($aDisplay)]
    $aMonitors[0] = $aDisplay[0][0]

    For $i = 1 To $aDisplay[0][0]
        $aMonitors[$i] = $aDisplay[$i][2]
    Next

    _ArraySort($aMonitors, 0, 1, 0, 0)

    Return $aMonitors
EndFunc