From 1b6ed1bc0079a29010024551fb88abd0187694ee Mon Sep 17 00:00:00 2001
From: Andrey Pshenkin <andrey.pshenkin@gmail.com>
Date: Sun, 20 Oct 2024 03:36:13 +0100
Subject: [PATCH] Allow set window class name via options for Windows (#3828)

* Allow set window class name via options

* update changelog
---
 v2/internal/frontend/desktop/windows/window.go |  9 +++++++--
 v2/pkg/options/windows/windows.go              |  3 +++
 website/docs/reference/options.mdx             | 13 +++++++++++--
 website/src/pages/changelog.mdx                |  3 +++
 4 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/v2/internal/frontend/desktop/windows/window.go b/v2/internal/frontend/desktop/windows/window.go
index a513e875a..1e4289ee6 100644
--- a/v2/internal/frontend/desktop/windows/window.go
+++ b/v2/internal/frontend/desktop/windows/window.go
@@ -70,8 +70,13 @@ func NewWindow(parent winc.Controller, appoptions *options.App, versionInfo *ope
 
 	var dwStyle = w32.WS_OVERLAPPEDWINDOW
 
-	winc.RegClassOnlyOnce("wailsWindow")
-	handle := winc.CreateWindow("wailsWindow", parent, uint(exStyle), uint(dwStyle))
+	windowClassName := "wailsWindow"
+	if windowsOptions != nil && windowsOptions.WindowClassName != "" {
+		windowClassName = windowsOptions.WindowClassName
+	}
+
+	winc.RegClassOnlyOnce(windowClassName)
+	handle := winc.CreateWindow(windowClassName, parent, uint(exStyle), uint(dwStyle))
 	result.SetHandle(handle)
 	winc.RegMsgHandler(result)
 	result.SetParent(parent)
diff --git a/v2/pkg/options/windows/windows.go b/v2/pkg/options/windows/windows.go
index 39b91ee8d..8f3bce44a 100644
--- a/v2/pkg/options/windows/windows.go
+++ b/v2/pkg/options/windows/windows.go
@@ -118,6 +118,9 @@ type Options struct {
 
 	// Configure whether swipe gestures should be enabled
 	EnableSwipeGestures bool
+
+	// Class name for the window. If empty, 'wailsWindow' will be used.
+	WindowClassName string
 }
 
 func DefaultMessages() *Messages {
diff --git a/website/docs/reference/options.mdx b/website/docs/reference/options.mdx
index e94c22f47..efcc67961 100644
--- a/website/docs/reference/options.mdx
+++ b/website/docs/reference/options.mdx
@@ -99,7 +99,9 @@ func main() {
             // OnResume is called when Windows resumes from low power mode
             OnResume: func(),
             // Disable GPU hardware acceleration for the webview
-			WebviewGpuDisabled: false,
+			      WebviewGpuDisabled: false,
+			      // Class name for the window. If empty, 'wailsWindow' will be used.
+			      WindowClassName: "MyWindow",
         },
         Mac: &mac.Options{
             TitleBar: &mac.TitleBar{
@@ -322,7 +324,7 @@ If not defined, the result is the following in cases where the Handler would hav
 
 :::info
 
-This does not work with vite v5.0.0+ and wails v2 due to changes in vite. 
+This does not work with vite v5.0.0+ and wails v2 due to changes in vite.
 Changes are planned in v3 to support similar functionality under vite v5.0.0+.
 If you need this feature, stay with vite v4.0.0+.
 See [issue 3240](https://github.com/wailsapp/wails/issues/3240) for details
@@ -804,6 +806,13 @@ Setting this to `true` will enable swipe gestures for the webview.
 Name: EnableSwipeGestures<br/>
 Type: `bool`
 
+#### WindowClassName
+
+Class name for the window. If empty, 'wailsWindow' will be used.
+
+Name: WindowClassName<br/>
+Type: `string`
+
 ### Mac
 
 This defines [Mac specific options](#mac).
diff --git a/website/src/pages/changelog.mdx b/website/src/pages/changelog.mdx
index 9890a0cfa..b90a8549c 100644
--- a/website/src/pages/changelog.mdx
+++ b/website/src/pages/changelog.mdx
@@ -13,6 +13,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `Security` in case of vulnerabilities.
 
 ## [Unreleased]
+### Added
+- Added option to set window class name on Windows. Added in [PR](https://github.com/wailsapp/wails/pull/3828) by @APshenkin
+
 ### Fixed
 - Fixed cross compilation failed with CGO [PR](https://github.com/wailsapp/wails/pull/3795) by [@fcying](https://github.com/fcying)