Graphics Effects

[Noobie]

Hi
I am new to Qt and have started playing with graphics effect and cannot quite achieve what I want.
I have a an object of type QWidget that has a QButton as a child.
I want to apply a different effect to the QWidget and the button -

m_effect1 = new QGraphicsOpacityEffect();
m_effect2 = new QGraphicsOpacityEffect();

m_effect1->setOpacity(1.0);
m_effect2->setOpacity(1.0);

ui.pushButton->setGraphicsEffect(m_effect2);
ui.stackedWidget->setGraphicsEffect(m_effect1);

When I run the Qt complains the a paint device can only be painted by one painter at a time

Could anyone be kind enough to help me?

Thanks

Bob

[raven-worx]

this is not working when the 2 widgets are in parent-child relationship.

You can only achieve this when the 2 widgets have the same parent and you stack them above each other.

So if you depend on the parent-child relationship and can't break up your widgets this won't be possible.

[Noobie]

Hi
Thanks for your reply
What do you mean by

You can only achieve this when the 2 widgets have the same parent and you stack them above each other.

Thanks

[raven-worx]

they both have the same parent and for example set the z-order (stacking) to make it look like the one is a child of the other.
You would ensure to layout the items by yourself though on every resize of the common parent.

For z-order changing you can use QWidget methods: raise(), lower(), stackUnder()

[Noobie]

Ok
Looks like I cant achieve what I need