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Blueprint Reference

Reference for UOperatingSystemQrCodeGenerator (/Script/OperatingSystemQRCode.OperatingSystemQrCodeGenerator).

Class diagram

flowchart TB
  Gen["«static» UOperatingSystemQrCodeGenerator<br/>GenerateQrCodeTextureSimple() · GenerateQrCodeTexture()"]
  ECL["EQrCodeErrorCorrectionLevel<br/>Low · Medium · High · VeryHigh"]
  Gen --> ECL

EQrCodeErrorCorrectionLevel

Value	Approx. damage tolerance
Low	~7%
Medium	~15% (default on full node)
High	~25%
Very High	~30%

Higher correction may increase QR version (more modules).

Blueprint functions

Generate QR Code Texture Simple

Input	Type	Description
String To Encode	String	Payload text
Return	Texture 2D	QR bitmap (black on white)

Category: Qr Code Generator. Callable from any Blueprint.

Generate QR Code Texture

Input	Type	Default	Description
String To Encode	String	—	Payload
Error Correction Level	Enum	Medium	See table above
Invert	Boolean	`false`	Swap foreground/background
Color 1	Linear Color	White	Module color 1
Color 2	Linear Color	Black	Module color 2
SRGB	Boolean	`true`	Convert linear colors via sRGB
Return	Texture 2D	—	Custom-colored QR

Example — branded QR

Event Construct
  → Generate QR Code Texture
      String: "WIFI:T:WPA;S:MyNetwork;P:secret;;"
      Error Correction: High
      Color 1: (1,1,1,1)
      Color 2: (0.1, 0.2, 0.8, 1)
  → Set Brush from Texture

Content paths

Item	Location
Sample widget	`QrCodeGenerator/WBP_QrCodeSampleWidget`
Demo map	`QrCodeGenerator/DemoMap`