Get non-active window thumbnail preview - windows

Question

Windows 7 and Vista both have a feature very usefull: Taskbar Thumbnail Preview, that allows you to see what's happening on other (minimized windows).
I am very inexperient using windows functions and DLLs but i wanted to know if it is possible to get minimized windows previews. The goal is to make an application that would loop between all processes that have minimized windows.

Answer 1

Not exactly what you need but is a good place to start. HERE
#include <ITaskBarList.au3>
#include <ButtonConstants.au3>
$GUI = GUICreate("Thumbnail Button", 250, 100)
GUICtrlCreateButton('ThumbNailClip', 1, 1)
GUISetState(#SW_SHOW)
$oTaskbar = _ITaskBar_CreateTaskBarObj()
$but1 = _ITaskBar_CreateTBButton('Down ToolTip', #ScriptDir & '\Icons\Down.ico', -1, '_Down_Button')
$but2 = _ITaskBar_CreateTBButton('Left ToolTip', #ScriptDir & '\Icons\Left.ico', -1, '_Left_Button')
$but3 = _ITaskBar_CreateTBButton('', #ScriptDir & '\Icons\Left.ico', -1, '_Right_Button');no tooltip
$but4 = _ITaskBar_CreateTBButton('Internet Explorer',#ProgramFilesDir & '\Internet Explorer\iexplore.exe', -1, '_IE_Button');
$but5 = _ITaskBar_CreateTBButton('AutoIt', #AutoItExe, -1, '_AutoIt_Button');
_ITaskBar_AddTBButtons($GUI)
_ITaskBar_SetThumbNailToolTip($GUI, 'ITaskBarList UDF ToolTip Example')
; Set progressbar to normal state (green)
_ITaskBar_SetProgressState($GUI, 2)
For $i = 1 to 100
_ITaskBar_SetProgressValue($GUI, $i)
Sleep(75)
; Set progressbar to Paused state (yellow). Notice that even thought the progressbar is in "paused" state, you can
; still can change the value. Its just an indicator. It doesnt actually pause anything.
If $i = 25 Then _ITaskBar_SetProgressState($GUI, 8);
;Set progressbar to Error state (red). This works the same way as paused state. Its just an indicator.
If $i = 50 Then _ITaskBar_SetProgressState($GUI, 4)
;Set progressbar back to normal state (green)
If $i = 75 Then _ITaskBar_SetProgressState($GUI, 2)
Next
;set progressbar Indeterminate
_ITaskBar_SetProgressState($GUI, 1)
Sleep(3000)
;clear progressbar
_ITaskBar_SetProgressState($GUI)
;Set ThumbNail Preview to only show the button from the GUI
MsgBox(0,'SetThumbNailClip','Notice that the ThumbNail preview shows the whole GUI.', 30, $Gui)
_ITaskBar_SetThumbNailClip($GUI, 0, 0, 80, 30)
MsgBox(0,'SetThumbNailClip','Now look again. You should only see the ThumbNailClip Button', 30, $Gui)
; clear thumbnail clip
_ITaskBar_SetThumbNailClip($GUI)
;Add Icon Overlay
_ITaskBar_SetOverlayIcon($GUI, #ProgramFilesDir & '\Internet Explorer\iexplore.exe')
MsgBox(0,'SetOverlayIcon','Taskbar tab should have and Internet Explorer icon overlay. ', 30, $Gui)
; clear icon overlay
_ITaskBar_SetOverlayIcon($GUI)
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
Func _Down_Button()
MsgBox(0, 'Button Pressed', 'Down Button has been Pressed.')
EndFunc ;==>_Down_Button
Func _Left_Button()
MsgBox(0, 'Button Pressed', 'Left Button has been Pressed.')
EndFunc ;==>_Left_Button
Func _Right_Button()
MsgBox(0, 'Button Pressed', 'Right Button has been Pressed.')
EndFunc ;==>_Right_Button
Func _IE_Button()
MsgBox(0, 'Button Pressed', 'IE Button has been Pressed.')
EndFunc
Func _AutoIt_Button()
MsgBox(0, 'Button Pressed', 'AutoIT Button has been Pressed.')
EndFunc