CODEWITHSUNDEEP
c++qtgetter
RobinFrcd
RobinFrcd

Reputation: 5466

Call QtWidget parent method from child

I'm trying to get some attributes of a parent widget: SamplerModule from its children: InstrumentSelector.

From the InstrumentSelector constructor, I run parent->metaObject()->className() which gives me the right name (SamplerModule). So I'm sure that I'm in the right place to call one of my public method, for example getT() defined as a public method in my SamplerModule header and cpp file.

But, when I call this function, I'm getting this error:

\app\widgets\instrumentselector.cpp:23: erreur : 'class QWidget' has no member named 'getT' msgBox.setText(parent->getT());

So I think that's C++ and Qt basics but I'm still learning that.

Does someone have an idea ?

Thanks

Upvotes: 0

Views: 552

Answers (1)

goug
goug

Reputation: 2444

Without seeing the code, it's hard to say for sure, but my guess is that you've defined "parent" as a "QWidget *", so the compiler has no idea that it's actually a base pointer to a SamplerModule. You need to either cast "parent" to a SamplerModule pointer, or declare it that way to start with. And yes, this is pure C++; it's not related to Qt.

Upvotes: 1

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