On Windows, set name of Window Class, closes #7498

allow to customize it instead of current value hard coded "Window Class"

core/tauri-config-schema/schema.json

@@ -460,6 +460,11 @@
           "default": false,
           "type": "boolean"
         },
+        "windowClassname": {
+          "description": "The name of the window class created on Windows to create the window.",
+          "default": "Window Class",
+          "type": "string"
+        },
         "theme": {
           "description": "The initial window theme. Defaults to the system theme. Only implemented on Windows and macOS 10.14+.",
           "anyOf": [

core/tauri-runtime-wry/src/lib.rs

@@ -752,6 +752,7 @@ impl WindowBuilder for WindowBuilderWrapper {
         .visible_on_all_workspaces(config.visible_on_all_workspaces)
         .content_protected(config.content_protected)
         .skip_taskbar(config.skip_taskbar)
+        .window_classname(config.window_classname.to_string())
         .theme(config.theme)
         .shadow(config.shadow);
 
@@ -969,6 +970,17 @@ impl WindowBuilder for WindowBuilderWrapper {
     self
   }
 
+  #[cfg(windows)]
+  fn window_classname<S: Into<String>>(mut self, window_classname: S) -> Self {
+    self.inner = self.inner.with_window_classname(window_classname);
+    self
+  }
+
+  #[cfg(not(windows))]
+  fn window_classname<S: Into<String>>(self, _window_classname: S) -> Self {
+    self
+  }
+
   #[allow(unused_variables, unused_mut)]
   fn theme(mut self, theme: Option<Theme>) -> Self {
     self.inner = self.inner.with_theme(if let Some(t) = theme {

core/tauri-runtime/src/webview.rs

@@ -263,6 +263,14 @@ pub trait WindowBuilder: WindowBuilderBase {
   #[must_use]
   fn skip_taskbar(self, skip: bool) -> Self;
 
+  /// Sets custom name for Windows' window class.
+  ///
+  /// ## Platform-specific
+  ///
+  /// - **Linux / iOS / Android:** Unsupported.
+  #[must_use]
+  fn window_classname<S: Into<String>>(self, window_classname: S) -> Self;
+
   /// Sets whether or not the window has shadow.
   ///
   /// ## Platform-specific

core/tauri-utils/src/config.rs

@@ -971,6 +971,9 @@ pub struct WindowConfig {
   /// If `true`, hides the window icon from the taskbar on Windows and Linux.
   #[serde(default, alias = "skip-taskbar")]
   pub skip_taskbar: bool,
+  /// The name of the window class created on Windows to create the window.
+  #[serde(default = "default_window_classname")]
+  pub window_classname: String,
   /// The initial window theme. Defaults to the system theme. Only implemented on Windows and macOS 10.14+.
   pub theme: Option<crate::Theme>,
   /// The style of the macOS title bar.
@@ -1055,6 +1058,7 @@ impl Default for WindowConfig {
       visible_on_all_workspaces: false,
       content_protected: false,
       skip_taskbar: false,
+      window_classname: default_window_classname(),
       theme: None,
       title_bar_style: Default::default(),
       hidden_title: false,
@@ -1084,6 +1088,10 @@ fn default_title() -> String {
   "Tauri App".to_string()
 }
 
+fn default_window_classname() -> String {
+  "Window Class".to_string()
+}
+
 /// A Content-Security-Policy directive source list.
 /// See <https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/Sources#sources>.
 #[derive(Debug, PartialEq, Eq, Clone, Deserialize, Serialize)]
@@ -2240,6 +2248,7 @@ mod build {
       let visible_on_all_workspaces = self.visible_on_all_workspaces;
       let content_protected = self.content_protected;
       let skip_taskbar = self.skip_taskbar;
+      let window_classname = str_lit(&self.window_classname);
       let theme = opt_lit(self.theme.as_ref());
       let title_bar_style = &self.title_bar_style;
       let hidden_title = self.hidden_title;
@@ -2281,6 +2290,7 @@ mod build {
         visible_on_all_workspaces,
         content_protected,
         skip_taskbar,
+        window_classname,
         theme,
         title_bar_style,
         hidden_title,

core/tauri/Cargo.toml

@@ -67,6 +67,9 @@ infer = { version = "0.9", optional = true }
 png = { version = "0.17", optional = true }
 ico = { version = "0.2.0", optional = true }
 
+[patch.crates-io]
+tao = {git = "https://github.com/geraudloup/tao"}
+
 [target."cfg(any(target_os = \"linux\", target_os = \"dragonfly\", target_os = \"freebsd\", target_os = \"openbsd\", target_os = \"netbsd\"))".dependencies]
 gtk = { version = "0.16", features = [ "v3_24" ] }
 glib = "0.16"

core/tauri/src/test/mock_runtime.rs

@@ -316,6 +316,10 @@ impl WindowBuilder for MockWindowBuilder {
     self
   }
 
+  fn window_classname<S: Into<String>>(self, classname: S) -> Self {
+    self
+  }
+
   fn shadow(self, enable: bool) -> Self {
     self
   }

core/tauri/src/window.rs

@@ -561,6 +561,17 @@ impl<'a, R: Runtime> WindowBuilder<'a, R> {
     self
   }
 
+  /// Sets custom name for Windows' window class.
+  ///
+  /// ## Platform-specific
+  ///
+  /// - **Linux / iOS / Android:** Unsupported.
+  #[must_use]
+  pub fn window_classname<S: Into<String>>(mut self, classname: S) -> Self {
+    self.window_builder = self.window_builder.window_classname(classname);
+    self
+  }
+
   /// Sets whether or not the window has shadow.
   ///
   /// ## Platform-specific

tooling/cli/schema.json

@@ -460,6 +460,11 @@
           "default": false,
           "type": "boolean"
         },
+        "windowClassname": {
+          "description": "The name of the window class created on Windows to create the window.",
+          "default": "Window Class",
+          "type": "string"
+        },
         "theme": {
           "description": "The initial window theme. Defaults to the system theme. Only implemented on Windows and macOS 10.14+.",
           "anyOf": [