The UI is broken PLEASE HELP

[xXHDGamer360Xx]

The UI is broken and I did nothing not sure what happened. Is this a bug?

if you need to see the code please reply back.

[xXHDGamer360Xx]

Huh very weird I deleted the saved folder and it was fixed until it crashed and it was the save system

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000000000001c0

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kernel32
ntdll

it’s broken again

[Hexavx]

I watched the video, when u clicked “Start”, it started to stopped working.
Then it must somewhere in your code that related to save game and game menu.

Maybe u created a bool to check if the game menu is shown or not, if the bool is false, then the menu should be hidden, but it is shown, so the button is not working.

[Ivan3z]

it is a null pointer… use IsValid function to check your variables

[xXHDGamer360Xx]

When I exported the game it worked fine

[xXHDGamer360Xx]

I made a check that makes sure that if the bool is false it removes from parent

[Ivan3z]

@xXHDGamer360Xx

EXCEPTION_ACCESS_VIOLATION

Belive me… somewhere you are reading or writing a null pointer

@Hexavx

when u clicked “Start

and probably it is there…

use IsValid()

[xXHDGamer360Xx]

I’m still learning UE5 so not sure how to use IsValid()

[Ivan3z]

when someone did the work for you XD

Is valid what does it means? How to use it ?and when to use it?

Hey Whisper, Both of the IsValid node’s perform a Null-Check, which essentially means it makes sure the object reference used as the IsValid input (usually a variable) holds a valid reference to an object. If the variable is un-set, meaning null, it will either use the not valid output from the executable macro node (white wires), or will return false if using the function node that outputs a boolen value (red wire). To use it with the function node just add a branch node and use the boolean r…

[xXHDGamer360Xx]

how do you find the null pointer with IsValid?

[Ivan3z]

Blueprint has a node, same name, works exactly the same lake this in C++.

Example:

	if (!IsValid(Controller))
	{
		return false;
	}

The controller es a pointer for example… you must check all variales pass as references.

[xXHDGamer360Xx]

uhh Is this right? And what is the object for it?

[Ivan3z]

yes!! you got it!!

[Ivan3z]

@xXHDGamer360Xx

¿Y cuál es el objeto para ello?

If you read o write a null pointer you will get a crash… that is the point…

is like so… you want read a book but there is no book XD (The book does not exist)

[xXHDGamer360Xx]

what about the object?

[Ivan3z]

Do you mean this? hahahha… what a confusión!!

No… look… it was jast an example…
You don’t need check the controller if you are not using it…

you must check your widget button… i think your problem is there

---

Anyway… type GetController and you get it

[xXHDGamer360Xx]

It’s Valid

[xXHDGamer360Xx]

so I made a change to the code instead of remove from parent it’s now remove all widgets.

[Ivan3z]

-Try don’t to use tick event… it is too heavy…
-if the button is fine then must be other variable (you must find it).
-Check the variables just before use it (in the same line)
-Don’t try to use the widgets after destroy it… that is

@xXHDGamer360Xx

remove from parent

or

@xXHDGamer360Xx

remove all widgets

After destroy, they are null pointers.

You must create they again to used it

[xXHDGamer360Xx]

It works fine now