[Qt-interest] 答复: how to know derive class

[pengliang(彭亮)]

Hi 
Thank you.
But how to know which QWidget is QLineEdit and which is QComboBox?
Is this only method?


Thanks
彭亮 Ken

-----邮件原件-----
发件人: qt-interest-bounces at trolltech.com [mailto:qt-interest-bounces at trolltech.com] 代表 Ivan Kharin
发送时间: 2010年11月11日 15:57
收件人: qt-interest at trolltech.com
主题: Re: [Qt-interest] how to know derive class

> Now, snippets: convert QWidget to QLineEdit, if failed, then it’s a QComboBox.
> But I think this is not good.

don't use C-cast. use qobject_cast<WidgetType*>() instead.

-- 
Regards,
Ivan Kharin


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