findChild(ObjectName) fails?

I have a main window which creates multi QWidgets during running. I want to pick up one of them by their Object Name. But when I use findChild(Object Name), it always returns 0. For example,
at the creation of a widget, I used

Code:

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MyGui *m_MyGui;
m_MyGui->setObjectName("Cam 1");

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and I use the following to when I need to get the widget

Code:

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MyGui *tmp = findChild<MyGui *>("Cam 1");

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Any help?

From what class are you calling it? If m_MyGui isn't a child of that class, then it is normal for the function to fail.

Also make sure MyGui class has the Q_OBJECT macro.

Thanks. I get it. This MyGui is not a child of the caller class. Emmm. Need to look for another method of finding an object.

Store a pointer somewhere or use signals and slots.

Thanks wysota! The method "signal and slot" does the job very well.