###### Easy Window Dragging -- KDE style (requires XP/2k/NT) -- by Jonny

This script makes it much easier to move or resize a window: 1) Hold down the ALT key and LEFT-click anywhere inside a window to drag it to a new location; 2) Hold down ALT and RIGHT-click-drag anywhere inside a window to easily resize it; 3) Press ALT twice, but before releasing it the second time, left-click to minimize the window under the mouse cursor, right-click to maximize it, or middle-click to close it.

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    ; This script was inspired by and built on many like it
    ; in the forum. Thanks go out to ck, thinkstorm, Chris,
    ; and aurelian for a job well done.

    ; Change history:
    ; November 07, 2006: Optimized resizing code in !RButton, courtesy of bluedawn.
    ; February 05, 2006: Fixed double-alt (the ~Alt hotkey) to work with latest versions of AHK.

    ; The Double-Alt modifier is activated by pressing
    ; Alt twice, much like a double-click. Hold the second
    ; press down until you click.
    ;
    ; The shortcuts:
    ;  Alt + Left Button  : Drag to move a window.
    ;  Alt + Right Button : Drag to resize a window.
    ;  Double-Alt + Left Button   : Minimize a window.
    ;  Double-Alt + Right Button  : Maximize/Restore a window.
    ;  Double-Alt + Middle Button : Close a window.
    ;
    ; You can optionally release Alt after the first
    ; click rather than holding it down the whole time.

    If (A_AhkVersion < "1.0.39.00")
    {
        MsgBox,20,,This script may not work properly with your version of AutoHotkey. Continue?
        IfMsgBox,No
        ExitApp
    }

    ; This is the setting that runs smoothest on my
    ; system. Depending on your video card and cpu
    ; power, you may want to raise or lower this value.
    SetWinDelay,2

    CoordMode,Mouse
    return

    !LButton::
    If DoubleAlt
    {
        MouseGetPos,,,KDE_id
        ; This message is mostly equivalent to WinMinimize,
        ; but it avoids a bug with PSPad.
        PostMessage,0x112,0xf020,,,ahk_id %KDE_id%
        DoubleAlt := false
        return
    }
    ; Get the initial mouse position and window id, and
    ; abort if the window is maximized.
    MouseGetPos,KDE_X1,KDE_Y1,KDE_id
    WinGet,KDE_Win,MinMax,ahk_id %KDE_id%
    If KDE_Win
        return
    ; Get the initial window position.
    WinGetPos,KDE_WinX1,KDE_WinY1,,,ahk_id %KDE_id%
    Loop
    {
        GetKeyState,KDE_Button,LButton,P ; Break if button has been released.
        If KDE_Button = U
            break
        MouseGetPos,KDE_X2,KDE_Y2 ; Get the current mouse position.
        KDE_X2 -= KDE_X1 ; Obtain an offset from the initial mouse position.
        KDE_Y2 -= KDE_Y1
        KDE_WinX2 := (KDE_WinX1 + KDE_X2) ; Apply this offset to the window position.
        KDE_WinY2 := (KDE_WinY1 + KDE_Y2)
        WinMove,ahk_id %KDE_id%,,%KDE_WinX2%,%KDE_WinY2% ; Move the window to the new position.
    }
    return

    !RButton::
    If DoubleAlt
    {
        MouseGetPos,,,KDE_id
        ; Toggle between maximized and restored state.
        WinGet,KDE_Win,MinMax,ahk_id %KDE_id%
        If KDE_Win
            WinRestore,ahk_id %KDE_id%
        Else
            WinMaximize,ahk_id %KDE_id%
        DoubleAlt := false
        return
    }
    ; Get the initial mouse position and window id, and
    ; abort if the window is maximized.
    MouseGetPos,KDE_X1,KDE_Y1,KDE_id
    WinGet,KDE_Win,MinMax,ahk_id %KDE_id%
    If KDE_Win
        return
    ; Get the initial window position and size.
    WinGetPos,KDE_WinX1,KDE_WinY1,KDE_WinW,KDE_WinH,ahk_id %KDE_id%
    ; Define the window region the mouse is currently in.
    ; The four regions are Up and Left, Up and Right, Down and Left, Down and Right.
    If (KDE_X1 < KDE_WinX1 + KDE_WinW / 2)
       KDE_WinLeft := 1
    Else
       KDE_WinLeft := -1
    If (KDE_Y1 < KDE_WinY1 + KDE_WinH / 2)
       KDE_WinUp := 1
    Else
       KDE_WinUp := -1
    Loop
    {
        GetKeyState,KDE_Button,RButton,P ; Break if button has been released.
        If KDE_Button = U
            break
        MouseGetPos,KDE_X2,KDE_Y2 ; Get the current mouse position.
        ; Get the current window position and size.
        WinGetPos,KDE_WinX1,KDE_WinY1,KDE_WinW,KDE_WinH,ahk_id %KDE_id%
        KDE_X2 -= KDE_X1 ; Obtain an offset from the initial mouse position.
        KDE_Y2 -= KDE_Y1
        ; Then, act according to the defined region.
        WinMove,ahk_id %KDE_id%,, KDE_WinX1 + (KDE_WinLeft+1)/2*KDE_X2  ; X of resized window
                                , KDE_WinY1 +   (KDE_WinUp+1)/2*KDE_Y2  ; Y of resized window
                                , KDE_WinW  -     KDE_WinLeft  *KDE_X2  ; W of resized window
                                , KDE_WinH  -       KDE_WinUp  *KDE_Y2  ; H of resized window
        KDE_X1 := (KDE_X2 + KDE_X1) ; Reset the initial position for the next iteration.
        KDE_Y1 := (KDE_Y2 + KDE_Y1)
    }
    return

    ; "Alt + MButton" may be simpler, but I
    ; like an extra measure of security for
    ; an operation like this.
    !MButton::
    If DoubleAlt
    {
        MouseGetPos,,,KDE_id
        WinClose,ahk_id %KDE_id%
        DoubleAlt := false
        return
    }
    return

    ; This detects "double-clicks" of the alt key.
    ~Alt::
    DoubleAlt := A_PriorHotKey = "~Alt" AND A_TimeSincePriorHotkey < 400
    Sleep 0
    KeyWait Alt  ; This prevents the keyboard's auto-repeat feature from interfering.
    return