How to invoke QBrush.setTexture() with QPixmap on QGraphicsRectItem?

[mrjj]

• But the png cannot be redraw immediately only I move the cursor or focus the window.

That is the part i dont understand.
It should trigger paint()!?!

• So, is it possible to show the png in the GraphicsRectItem?
  Yes , same as with QGraphicsItem , but i be surprised if that alters anything.

When calling update() it should draw the png. Else there is a bug in the code. or something im not aware of.
You should looking to this. Using break points. etc.

item->update() should trigger paint() , else i have no idea what is going on.

[Asperamanca]

Do not confuse paintEvent with paint.
paintEvent is for Widgets
paint is for GraphicsItems

[Kevin Zhong]

Hi all,

Finally, I solved this problems.
@mrjj, as you mentioned that use

item->update()

WORKs.

My code is a little bit complex, all the item were originated from a template:

template <typename T, typename Event>
class DeviceEventHandler : public Event, public QObject

At the beginning, I try to update the from the template, it doesn't work.
Then I move the

update()

method in the all the subclass, then the pixmap can be updated automatically.

So, really thanks for your patience and kindly support.

Have a nice weekend.

PS: Be honest, I am newbie in Qt area and I got so kindly support. I really appreciate your kindness. :)

BRs
Kevin

[mrjj]

@Kevin-Zhong

Hi
You are most welcome. we do like Qt newbies here :)

It was a bit odd with update() but good you found the solution.
Still not sure why it didn't trigger inside SetStatus :)
Good weekend to you too