wailsapp
V3 Windows - system tray icon no longer defaulting to app icon if none present
Description
It seems this was broken by d58d4ba758036d1dfbb4ce525cbf412c0a3160c5 as it worked before and works when reverting the commit. What I get in the systray is the default Wails icon.
To Reproduce
create a systray app on Windows, add an app icon, run or build the app.
Expected behaviour
What we used to have, where the systray icon defaults to the app icon if one exists.
Screenshots
Attempted Fixes
No response
System Details
# System
┌────────────────────────────────────────────────────────────────────────────────────────────┐
| Name | Windows 10 Pro |
| Version | 2009 (Build: 26200) |
| ID | 25H2 |
| Branding | Windows 11 Pro |
| Platform | windows |
| Architecture | amd64 |
| Go WebView2Loader | true |
| WebView2 Version | 142.0.3595.53 |
| CPU | 12th Gen Intel(R) Core(TM) i7-12700 |
| GPU 1 | Intel(R) UHD Graphics 770 (Intel Corporation) - Driver: 32.0.101.6881 |
| Memory | 16GB |
└────────────────────────────────────────────────────────────────────────────────────────────┘
# Build Environment
┌─────────────────────────────────────────────────────────────────────────────────────────────────────┐
| Wails CLI | v3.0.0-dev |
| Go Version | go1.25.4 |
| Revision | 75ff8e215dafa6d1c12845b90f87362d202f93eb |
| Modified | false |
| -buildmode | exe |
| -compiler | gc |
| CGO_CFLAGS | |
| CGO_CPPFLAGS | |
| CGO_CXXFLAGS | |
| CGO_ENABLED | 1 |
| CGO_LDFLAGS | |
| DefaultGODEBUG | containermaxprocs=0,decoratemappings=0,tlssha1=1,updatemaxprocs=0,x509sha256skid=0 |
| GOAMD64 | v1 |
| GOARCH | amd64 |
| GOOS | windows |
| vcs | git |
| vcs.modified | false |
| vcs.revision | 75ff8e215dafa6d1c12845b90f87362d202f93eb |
| vcs.time | 2025-11-11T15:36:13Z |
└─────────────────────────────────────────────────────────────────────────────────────────────────────┘
# Dependencies
┌────────────────────────────────────────────┐
| npm | 11.6.2 |
| NSIS | v3.11 |
| MakeAppx.exe (Windows SDK) | Not Installed |
| MSIX Packaging Tool | Not Installed |
| SignTool.exe (Windows SDK) | Not Installed |
| |
└───────── * - Optional Dependency ──────────┘
# Checking for issues
SUCCESS No issues found
# Diagnosis
SUCCESS Your system is ready for Wails development!
Additional context
No response
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I think I found the change that did it.
In v3/pkg/application/systemtray_windows.go, line 228:
defaultIcon := getNativeApplication().windowClass.Icon
this takes the icon calculated during app creation (application_windows.go:209) which uses w32.IDI_APPLICATION to get the app icon. I have no idea what that means, but the original line in systemtray_windows.go was:
defaultIcon := w32.LoadIconWithResourceID(w32.GetModuleHandle(""), w32.RT_ICON)
which uses w32.RT_ICON. When I replace the first line with the second I get the correct systray icon in my app.