Latest C++ topics - Epic Developer Community Forums

Topic	Replies	Views	Activity
Display Cluster API in c++ UE4-26 , question , unreal-engine , ndisplay	3	1095	September 23, 2025
Why is my UNiagaraComponent null when using UNiagaraFunctionLibrary::SpawnSystemAttached question , unreal-engine	5	141	September 23, 2025
Understanding C++ input CPP , Input , unreal-engine , playercontroller , action-mappings	2	306	September 22, 2025
Debugging Gamepad Inputs on MacOS question , MAC , gamepad , controller , unreal-engine	10	2513	September 22, 2025
Confused about IsSystemAttribute() in GAS source code question , CPP , unreal-engine	0	51	September 22, 2025
Automating Material Creation in Unreal Engine using Specific Texture Sets question , unreal-engine , fab	1	127	September 22, 2025
Need Some Help Figuring Out the Mover 2.0 Plugin CPP , c-class-wizard , request , unreal-engine , c-custommeshcomponen , c-and-blueprint , c-custom-shape , c-cone-shape , c-programming , c-c , c-class , c-error , c-and-bluepri	1	236	September 22, 2025
Blackbox AI: Smarter Coding Assistance for Unreal Engine question , unreal-engine , unreal-editor-for-fortnite	0	242	September 22, 2025
I have root motion animation in my animation. yet the capsule doesn't move with animation even when "Enable Root motion" is checked. all seem good but the capsule is not moving when i click the enable root motion. help pls question , unreal-engine	0	44	September 21, 2025
Cannot build plugin module - LINK : fatal error LNK1181: cannot open input file '..\UE4Editor.lib' unreal-engine	16	10839	September 21, 2025
Change Default Actor Class used for Drag and Drop of Assets question , CPP , unreal-engine	3	713	September 21, 2025
Why is my FMassActorFragment always a nullptr ? question , CPP , unreal-engine	1	131	September 21, 2025
StateTree Schema how to set context question , CPP , unreal-engine	1	388	September 20, 2025
[BUG] Critical Error Array.h line 758 UE 5.4.3 and 5.4.4 question , CPP , packaging-projects , error , unreal-engine , critical-error	7	704	September 20, 2025
Access Violation error in BeginPlay, nullptr help? question , please-help-me , unreal-engine , nullptr , UE5	6	230	September 20, 2025
How to make the blueprint subclass that inherits from localplayersubsystem usable after packaging? Blueprint , question , CPP , unreal-engine	3	114	September 20, 2025
Could not find definition for module, need help! question , CPP , modules , unreal-engine	3	21762	September 19, 2025
Request for Access – Passionate Unreal Engine Learner Blueprint , question , CPP , bug-report , unreal-engine , unreal-editor-for-fortnite , fortnite-creative	0	48	September 19, 2025
Please help, PIE Crash when editing Open World maps question , editor , crash , bug-report , unreal-engine	17	284	September 19, 2025
AAVot AI – Smarter Workflow Assistance for Developers question , bug-report , unreal-engine	0	345	September 19, 2025
Shipping Problem unreal-engine	0	45	September 18, 2025
Unable to open source file "MaterialEditingLibrary.h" question , CPP , unreal-engine	0	37	September 18, 2025
Hi ！How can I call this FUNCTION？ Blueprint , question , CPP , unreal-engine	3	92	September 18, 2025
Leonardo AI Image Generator - Create Art, Images & Video question , bug-report , unreal-engine , unreal-editor-for-fortnite	0	556	September 18, 2025
Is there a way to know if you're initializing a world subsystem in game vs in the editor? question , unreal-engine	5	337	September 18, 2025
Dynamic creation of multiple trees question , unreal-engine	0	49	September 17, 2025
Not able to find c++ Enum class in blackboard key type dropdown question , CPP , unreal-engine	0	58	September 17, 2025
Bug report UE5.5 / 5.6 Call Function GetAsyncLoadPercentage(PackageName) ,The return value is incorrect(return -1) CPP , bug-report , unreal-engine , async	0	77	September 1, 2025
UE5 websocket WSS problem UE4-27 , question , unreal-engine , UE5-0	5	2725	September 17, 2025
C++ Classes break on reload question , unreal-engine	2	104	September 16, 2025

Display Cluster API in c++

3

1095

September 23, 2025

Why is my UNiagaraComponent null when using UNiagaraFunctionLibrary::SpawnSystemAttached

question , unreal-engine

5

141

September 23, 2025

Understanding C++ input

CPP , Input , unreal-engine , playercontroller , action-mappings

2

306

September 22, 2025

Debugging Gamepad Inputs on MacOS

question , MAC , gamepad , controller , unreal-engine

10

2513

September 22, 2025

Confused about IsSystemAttribute() in GAS source code

question , CPP , unreal-engine

0

51

September 22, 2025

Automating Material Creation in Unreal Engine using Specific Texture Sets

question , unreal-engine , fab

1

127

September 22, 2025

Need Some Help Figuring Out the Mover 2.0 Plugin

CPP , c-class-wizard , request , unreal-engine , c-custommeshcomponen , c-and-blueprint , c-custom-shape , c-cone-shape , c-programming , c-c , c-class , c-error , c-and-bluepri

1

236

September 22, 2025

Blackbox AI: Smarter Coding Assistance for Unreal Engine

question , unreal-engine , unreal-editor-for-fortnite

0

242

September 22, 2025

I have root motion animation in my animation. yet the capsule doesn't move with animation even when "Enable Root motion" is checked. all seem good but the capsule is not moving when i click the enable root motion. help pls

question , unreal-engine

0

44

September 21, 2025

Cannot build plugin module - LINK : fatal error LNK1181: cannot open input file '..\UE4Editor.lib'

unreal-engine

16

10839

September 21, 2025

Change Default Actor Class used for Drag and Drop of Assets

question , CPP , unreal-engine

3

713

September 21, 2025

Why is my FMassActorFragment always a nullptr ?

question , CPP , unreal-engine

1

131

September 21, 2025

StateTree Schema how to set context

question , CPP , unreal-engine

1

388

September 20, 2025

[BUG] Critical Error Array.h line 758 UE 5.4.3 and 5.4.4

question , CPP , packaging-projects , error , unreal-engine , critical-error

7

704

September 20, 2025

Access Violation error in BeginPlay, nullptr help?

question , please-help-me , unreal-engine , nullptr , UE5

6

230

September 20, 2025

How to make the blueprint subclass that inherits from localplayersubsystem usable after packaging?

Blueprint , question , CPP , unreal-engine

3

114

September 20, 2025

Could not find definition for module, need help!

question , CPP , modules , unreal-engine

3

21762

September 19, 2025

Request for Access – Passionate Unreal Engine Learner

Blueprint , question , CPP , bug-report , unreal-engine , unreal-editor-for-fortnite , fortnite-creative

0

48

September 19, 2025

Please help, PIE Crash when editing Open World maps

question , editor , crash , bug-report , unreal-engine

17

284

September 19, 2025

AAVot AI – Smarter Workflow Assistance for Developers

question , bug-report , unreal-engine

0

345

September 19, 2025

Shipping Problem

unreal-engine

0

45

September 18, 2025

Unable to open source file "MaterialEditingLibrary.h"

question , CPP , unreal-engine

0

37

September 18, 2025

Hi ！How can I call this FUNCTION？

Blueprint , question , CPP , unreal-engine

3

92

September 18, 2025

Leonardo AI Image Generator - Create Art, Images & Video

question , bug-report , unreal-engine , unreal-editor-for-fortnite

0

556

September 18, 2025

Is there a way to know if you're initializing a world subsystem in game vs in the editor?

question , unreal-engine

5

337

September 18, 2025

Dynamic creation of multiple trees

question , unreal-engine

0

49

September 17, 2025

Not able to find c++ Enum class in blackboard key type dropdown

question , CPP , unreal-engine

0

58

September 17, 2025

Bug report UE5.5 / 5.6 Call Function GetAsyncLoadPercentage(PackageName) ,The return value is incorrect(return -1)

CPP , bug-report , unreal-engine , async

0

77

September 1, 2025

UE5 websocket WSS problem

UE4-27 , question , unreal-engine , UE5-0

5

2725

September 17, 2025

C++ Classes break on reload

question , unreal-engine

2

104

September 16, 2025

Programming & Scripting C++