Why does $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom")) crash my script?

[E1M1]

I want to tell handle of control receives signal but how? My script crashes, and sends asks me to send error report to microsoft every time I run my script with code below

Func WM_SETFOCUS ($hWnd, $Msg, $wParam, $lParam)
        Local $hWndFrom, $iIDFrom, $iCode, $tNMHDR, $hWndListView, $tInfo
    $tNMHDR = DllStructCreate($tagNMHDR, $lParam)
    $hWndFrom = HWnd(DllStructGetData($tNMHDR, "hWndFrom"))
    GUICtrlSetData($ExtraInfo,GUICtrlGetHandle($RunOnce)&@CRLF&$hWndFrom)
    If $RunOnce = $lParam Then
        GUICtrlSetData($ExtraInfo,"lol")
    EndIf

EndFunc

Edited March 11, 2011 by E1M1

[E1M1]

Why doesnt GUIGetCursorInfo() work with input?

[Melba23]

E1M1,

Why doesnt GUIGetCursorInfo() work with input?

It does:

#include <GUIConstantsEx.au3>

$hGUI = GUICreate("Test", 500, 500)

$hInput = GUICtrlCreateInput("", 10, 10, 200, 20)

$hLabel = GUICtrlCreateLabel("", 10, 100, 200, 20)

GUISetState()

While 1

    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch

    $aCInfo = GUIGetCursorInfo()
    Switch $aCInfo[4]
        Case $hInput
            GUICtrlSetData($hLabel, "Over Input")
        Case Else
            GUICtrlSetData($hLabel, "")
    EndSwitch

WEnd

M23

[E1M1]

Oh, I just found it doesnt work in my func, but works if I added it to while loop. Thanks for that idea