QVariant to QVector3D

[beecksche]

Hello,
is there a way to convert a QVariant to a QVector3D?

Thanks!

[m.sue]

Hi,
The following should work:

QVector3D vec;
variant.setData(QVariant::fromValue<QVector3D>(vec));
vec=variant.value<QVector3D>();

-Michael.

[beecksche]

@m.sue

Thanks, i've also found:

T qvariant_cast(const QVariant &value)

[MMD18]

@beecksche
Hello, that's an old post. But in 2024 there's an implicit conversion operator for QVector3D into a QVariant, thus you could write it this way:

P.S. Antispam check got wild, sorry for using a pic.

[MMD18]

@MMD18 Seems like qvariant_cast is the only solution when you don't know the type at compile time and don't want to write a template function only for this conversion.

[GrecKo]

qvariant_cast is templated and is equivalent to QVariant::value.

[SimonSchroeder]

@MMD18 said in QVariant to QVector3D:

Seems like qvariant_cast is the only solution when you don't know the type at compile time

Is it actually possible to not provide the type to qvariant_cast? I don't see how the compiler would deduce the return type.