Resize window after taskbar hidden - autohotkey

Question

Below hotkey script hides/displays taskbar when lWin&H is keyed :
LWin & h::
if toggle := !toggle
{
WinHide ahk_class Shell_TrayWnd
WinHide Start ahk_class Button
}
else
{
WinShow ahk_class Shell_TrayWnd
WinShow Start ahk_class Button
}
return
Script is taken from a comment at http://lifehacker.com/taskbar-control-hides-and-unhides-the-windows-taskbar-w-1573974951
But when the taskbar is hidden the space which occupied the taskbar is unusable : windows do not drag to this area, newly opened program do not occupy this space.
Can script be modified so that when taskbar is hidden the entire screen area is usable ?

Answer 1

Here is a way that sets the work area to include the taskbar space to.
LWin & h::
if toggle := !toggle
{
WinHide ahk_class Shell_TrayWnd
WinHide Start ahk_class Button
SysGet, Mon, Monitor
SetWorkArea(MonLeft, MonTop, MonRight, MonBottom)
}
else
{
WinShow ahk_class Shell_TrayWnd
WinShow Start ahk_class Button
SysGet, Mon, MonitorWorkArea
SetWorkArea(MonLeft, MonTop, MonRight, MonBottom)
}
return
SetWorkArea(left,top,right,bottom) ; set main monitor work area ; windows are not resized!
{
VarSetCapacity(area, 16)
NumPut(left, area, 0, "UInt") ; left
NumPut(top, area, 4, "UInt") ; top
NumPut(right, area, 8, "UInt") ; right
NumPut(bottom,area,12, "UInt") ; bottom
DllCall("SystemParametersInfo", "UInt", 0x2F, "UInt", 0, "UPtr", &area, "UInt", 0) ; SPI_SETWORKAREA
}
Hope it helps

Answer 2

Instead of using autohotkey I use this utility :
http://www.itsamples.com/taskbar-hider.html

Answer 3

This appears to work (just tested on Windows7) :
lWin & h::
;#NoEnv
#NoTrayIcon
;#SingleInstance force
DetectHiddenWindows, Off ;for IfWinExist
VarSetCapacity( APPBARDATA, 36, 0 )
;------------------------------------------------------------
; Fetch current hidden/showing status
IfWinNotExist, ahk_class Shell_TrayWnd
TaskbarAndStartToggleState = 0 ;Currently [color=darkred]hidden[/color] (not showing)
Else
TaskbarAndStartToggleState = 1 ;Currently [color=darkred]non-hidden[/color] (showing)
;------------------------------------------------------------
Gosub +z ;Toggle the taskbar/SM state
;------------------------------------------------------------
Exit
;------------------------------------------------------------
+z::
TaskbarAndStartToggleState := Func(TaskbarAndStartToggleState)
Return
Func(TaskbarAndStartToggleState)
{
Global APPBARDATA
If TaskbarAndStartToggleState = 0
{
NumPut( (ABS_ALWAYSONTOP := 0x2), APPBARDATA, 32, "UInt" ) ;Enable "Always on top" [color=darkred](& disable auto-hide)[/color]
DllCall( "Shell32.dll\SHAppBarMessage", "UInt", ( ABM_SETSTATE := 0xA ), "UInt", &APPBARDATA )
WinShow ahk_class Shell_TrayWnd
Return 1 ;Now showing
}
If TaskbarAndStartToggleState = 1
{
NumPut( ( ABS_AUTOHIDE := 0x1 ), APPBARDATA, 32, "UInt" ) ;Disable "Always on top" [color=darkred](& enable auto-hide to hide Start button)[/color]
DllCall( "Shell32.dll\SHAppBarMessage", "UInt", ( ABM_SETSTATE := 0xA ), "UInt", &APPBARDATA )
WinHide ahk_class Shell_TrayWnd
;WinHide ahk_class Shell_TrayWnd ;[color=darkred]don't need this 2nd one?[/color]
Return 0 ;Now hidden
}
}
return
Slightly modified from :
http://www.autohotkey.com/board/topic/25932-trying-to-toggle-autohide-taskbar-with-keystroke-in-vista/page-2
Update : This script causes unexpected behavior when using multiple desktops. The taskbar is hidden but when toggle to restore just windows icon is display. Hiding the taskbar and unhiding the taskbar in taskbar properties appears to fix this, but this makes the script unusable if using multiple desktops.