close selected window?

[JerryD]

How about...

Global Const $WinExists = 1; Window exists 
Global Const $WinIsVisible = 2; Window is visible 
Global Const $WinIsEnabled = 4; Windows is enabled 
Global Const $WinIsActive = 8; Window is active 
Global Const $WinIsMinimized = 16; Window is minimized 
Global Const $WinIsMaximized = 32; Windows is maximized 
Global Const $WinActiveNormal = $WinExists + $WinIsVisible + $WinIsEnabled + $WinIsActive
Global Const $WinActiveMaximized = $WinExists + $WinIsVisible + $WinIsEnabled + $WinIsActive + $WinIsMaximized

HotKeySet ( '{F9}', 'MyExit' )
HotKeySet ( '{f11}', 'CloseWindow' )

While 1
    Sleep ( 100 )
WEnd

Func CloseWindow()
    Local $i, $iWinState, $aWinList
    $aWinList = WinList()
    For $i = 1 to $aWinList[0][0]
        $iWinState = WinGetState ( $aWinList[$i][0] )
        If ( $iWinState = $WinActiveNormal OR $iWinState = $WinActiveMaximized ) AND $aWinList[$i][0] <> '' Then
;           MsgBox ( 0, 'Close this window?', $aWinList[$i][0] )
;           WinKill ( $aWinList[$i][0]
            WinClose ( $aWinList[$i][0] )
        EndIf
    Next
EndFunc

Func MyExit()
    Exit
EndFunc

I had to use {F11} because for some reason F12 isn't working on my system! I left the debugging line and WinKill in but commented out. From the documentation and comments here, WinClose sounds like the way to go though.