[bug] Cannot load textures

[dqhieuu]

What happend?

I try to add textures to the canvas like the example code does, but it always returns an error
giu: .NewTextureFromRgba: cannot load texture befor (*MasterWindow).Run call!

Edit: after running it in a goroutine, it finally loads now.
The example code should be changed and tested because the load function won't work if not put in a goroutine.
I think there were comments from earlier version that said that you need to run that function in a goroutine. I wonder why you removed it?

Edit2: Actually, running a goroutine doesn't ensure that it will work. I can only run it by setting the timer and delay the function by 100ms
Where can I run the texture load function if the run function is the last one called and the load function only works when the app is running?

Code example

The example code from https://github.com/AllenDang/giu/blob/master/examples/canvas/canvas.go

To Reproduce

1. Run my demo
2. will see the crash...

Version

(latest)

OS

Windows 11

[gucio321]

well, let me check it. Maybe checking if MainWindow is open isn't necessary anymore after some changes... Not exactly sure.

[gucio321]

yah, panic call isn't necessary there. Opened PR.

[dqhieuu]

Great! Hopefully it won't cause any memory leak.