WinGetTitle returns blank on Windows 10 using _WinAPI_CreateWindowEx

[Nine]

It is working fine under Win7. But with Win10, WinGetTitle returns blank when called with $hWnd while using _WinAPI_CreateWindowEx. If you replace $hWnd with actual title, it works. If you use "[CLASS:MyWindowClass]", it works. If you do a WinList(), it will appear in the list.

Line
1	#include <WinAPIRes.au3>
2	#include <WinAPISys.au3>
3	#include <WindowsConstants.au3>
4
5	Opt( "MustDeclareVars", 1 )
6
7	Global $bExit = False
8
9	Example()
10
11	Func Example()
12	Local Const $sClass = "MyWindowClass"
13	Local Const $sName = "_WinAPI_RegisterClassEx"
14
15	; Get module handle for the current process
16	Local $hInstance = _WinAPI_GetModuleHandle( 0 )
17
18	; Create a class cursor
19	Local $hCursor = _WinAPI_LoadCursor( 0, 32512 ) ; IDC_ARROW
20
21	; Create a class icons (large and small)
22	Local $tIcons = DllStructCreate( "ptr;ptr" )
23	_WinAPI_ExtractIconEx( @SystemDir & "\shell32.dll", 130, DllStructGetPtr( $tIcons, 1 ), DllStructGetPtr( $tIcons, 2 ), 1 )
24	Local $hIcon = DllStructGetData( $tIcons, 1 )
25	Local $hIconSm = DllStructGetData( $tIcons, 2 )
26
27	; Create DLL callback function (window procedure)
28	Local $pWinProc = DllCallbackGetPtr( DllCallbackRegister( "WinProc", "lresult", "hwnd;uint;wparam;lparam" ) )
29
30	; Create and fill $tagWNDCLASSEX structure
31	Local $tWCEX = DllStructCreate( $tagWNDCLASSEX & ";wchar szClassName[" & ( StringLen( $sClass ) + 1 ) & "]" )
32	DllStructSetData( $tWCEX, "Size", DllStructGetPtr( $tWCEX, "szClassName" ) - DllStructGetPtr( $tWCEX ) )
33	DllStructSetData( $tWCEX, "Style", 0 )
34	DllStructSetData( $tWCEX, "hWndProc", $pWinProc )
35	DllStructSetData( $tWCEX, "ClsExtra", 0 )
36	DllStructSetData( $tWCEX, "WndExtra", 0 )
37	DllStructSetData( $tWCEX, "hInstance", $hInstance )
38	DllStructSetData( $tWCEX, "hIcon", $hIcon )
39	DllStructSetData( $tWCEX, "hCursor", $hCursor )
40	DllStructSetData( $tWCEX, "hBackground", _WinAPI_CreateSolidBrush( _WinAPI_GetSysColor( $COLOR_3DFACE ) ) )
41	DllStructSetData( $tWCEX, "MenuName", 0 )
42	DllStructSetData( $tWCEX, "ClassName", DllStructGetPtr( $tWCEX, "szClassName" ) )
43	DllStructSetData( $tWCEX, "hIconSm", $hIconSm )
44	DllStructSetData( $tWCEX, "szClassName", $sClass )
45
46	; Register a window class
47	_WinAPI_RegisterClassEx( $tWCEX )
48
49	; Create a window
50	Local $hWnd = _WinAPI_CreateWindowEx( 0, $sClass, $sName, BitOR( $WS_CAPTION, $WS_POPUPWINDOW, $WS_VISIBLE ), ( @DesktopWidth - 826 ) / 2, ( @DesktopHeight - 584 ) / 2, 826, 584, 0 )
51	MsgBox ($MB_SYSTEMMODAL, "", WinGetTitle($hWnd))
52
53	; Main msg loop
54	While Sleep(10)
55	If $bExit Then ExitLoop
56	WEnd
57
58	; Unregister window class and release resources
59	_WinAPI_UnregisterClass( $sClass, $hInstance )
60	_WinAPI_DestroyCursor( $hCursor )
61	_WinAPI_DestroyIcon( $hIcon )
62	_WinAPI_DestroyIcon( $hIconSm )
63	EndFunc
64
65	; Window procedure
66	Func WinProc( $hWnd, $iMsg, $wParam, $lParam )
67	Switch $iMsg
68	Case $WM_CLOSE
69	$bExit = True
70	EndSwitch
71	Return _WinAPI_DefWindowProcW( $hWnd, $iMsg, $wParam, $lParam )
72	EndFunc

[J-Paul Mesnage]

Fix sent to Jon

[Jon]

Fixed by revision [12566] in version: 3.3.15.4