AltTab_window_list.ahk

AltTab_window_list() {
  ;~ global
  WS_EX_CONTROLPARENT =0x10000
  WS_EX_APPWINDOW =0x40000
  WS_EX_TOOLWINDOW =0x80
  WS_DISABLED =0x8000000
  WS_POPUP =0x80000000
  AltTab_ID_List :=[]
  AltTab_ID_List_i :=0
  WinGet, Window_List, List ; Gather a list of running programs
  id_list =
  Loop, %Window_List%
    {
    wid := Window_List%A_Index%
    WinGetTitle, wid_Title, ahk_id %wid%
    WinGet, Style, Style, ahk_id %wid%

    If ((Style & WS_DISABLED) or ! (wid_Title)) ; skip unimportant windows ; ! wid_Title or
        Continue

    WinGet, es, ExStyle, ahk_id %wid%
    Parent := Decimal_to_Hex( DllCall( "GetParent", "uint", wid ) )
    WinGetClass, Win_Class, ahk_id %wid%
    WinGet, Style_parent, Style, ahk_id %Parent%

    If ((es & WS_EX_TOOLWINDOW)
        or ((es & ws_ex_controlparent) and ! (Style & WS_POPUP) and !(Win_Class ="#32770") and ! (es & WS_EX_APPWINDOW)) ; pspad child window excluded
        or ((Style & WS_POPUP) and (Parent) and ((Style_parent & WS_DISABLED) =0))) ; notepad find window excluded ; note - some windows result in blank value so must test for zero instead of using NOT operator!
      continue
     AltTab_ID_List_i ++
     wingetclass,cl,ahk_id %wid%
     wingettitle,ti,ahk_id %wid%
     AltTab_ID_List.insert({hwnd:wid, title: ti, class: cl})
    }
  return AltTab_ID_List

}

Decimal_to_Hex(var) {
  SetFormat, integer, hex
  var += 0
  SetFormat, integer, d
  return var
}