feat: add skip_taskabr impl for windows (rust-windowing#78)

.changes/skip_taskbar_windows.md

@@ -0,0 +1,5 @@
+---
+tao: patch
+---
+
+Add `skip_taskbar` implementation for windows

src/platform/unix.rs

@@ -18,7 +18,7 @@ pub trait WindowExtUnix {
   /// Returns the `ApplicatonWindow` from gtk crate that is used by this window.
   fn gtk_window(&self) -> &gtk::ApplicationWindow;
 
-  /// Not to display window icon in the task bar.
+  /// Removes the window icon from the task bar.
   fn skip_taskbar(&self);
 }
 

src/platform/windows.rs

@@ -102,6 +102,9 @@ pub trait WindowExtWindows {
 
   /// Returns the current window theme.
   fn theme(&self) -> Theme;
+
+  /// Removes the window icon from the task bar.
+  fn skip_taskbar(&self);
 }
 
 impl WindowExtWindows for Window {
@@ -131,6 +134,11 @@ impl WindowExtWindows for Window {
   fn theme(&self) -> Theme {
     self.window.theme()
   }
+
+  #[inline]
+  fn skip_taskbar(&self) {
+    self.window.skip_taskbar();
+  }
 }
 
 /// Additional methods on `WindowBuilder` that are specific to Windows.

src/platform_impl/windows/window.rs

@@ -21,17 +21,19 @@ use winapi::{
     windef::{HWND, POINT, POINTS, RECT},
   },
   um::{
-    combaseapi, dwmapi,
+    combaseapi::{self, CoCreateInstance, CLSCTX_SERVER},
+    dwmapi,
     imm::{CFS_POINT, COMPOSITIONFORM},
     libloaderapi,
     objbase::COINIT_APARTMENTTHREADED,
     ole2,
     oleidl::LPDROPTARGET,
-    shobjidl_core::{CLSID_TaskbarList, ITaskbarList2},
+    shobjidl_core::{CLSID_TaskbarList, ITaskbarList, ITaskbarList2},
     wingdi::{CreateRectRgn, DeleteObject},
     winnt::{LPCWSTR, SHORT},
     winuser,
   },
+  Interface,
 };
 
 use crate::{
@@ -716,6 +718,22 @@ impl Window {
   pub fn theme(&self) -> Theme {
     self.window_state.lock().current_theme
   }
+
+  #[inline]
+  pub fn skip_taskbar(&self) {
+    unsafe {
+      let mut taskbar_list: *mut ITaskbarList = std::mem::zeroed();
+      CoCreateInstance(
+        &CLSID_TaskbarList,
+        ptr::null_mut(),
+        CLSCTX_SERVER,
+        &ITaskbarList::uuidof(),
+        &mut taskbar_list as *mut _ as *mut _,
+      );
+      (*taskbar_list).DeleteTab(self.window.0);
+      (*taskbar_list).Release();
+    }
+  }
 }
 
 impl Drop for Window {