hwnd to qwidget setparent error

[cic]

i try to convert the hwnd to qwidget acc. this post:
http://www.qtcentre.org/threads/3713...idget*-pointer

e.g.

HWND hTable = tbl->winHWnd();
 
::SetParent(hTable, (HWND)winq->winId());
 
QWidget* qTable = QWidget::find(hTable);

HWND hTable = tbl->winHWnd();

::SetParent(hTable, (HWND)winq->winId());

QWidget* qTable = QWidget::find(hTable);

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but after ::SetParent() from win API still the QWidget::find() only returns me null.
I step into the debugger and find,

before ::SetParent() was called, the QWidgetPrivate::mapper contains 2 elements,
then after the mapper gained one more element but this element's value (the hwnd value?) is not the hTable!?

is there any notes for the issue?


-------------------------------------

sry, the problem has nothing to do with ::SetParent(),
the added element is from calling

winq->winId()

winq->winId()

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