windows-bindgen should generate no_std bindings by default

crates/libs/bindgen/src/types/cpp_interface.rs

@@ -369,20 +369,17 @@ impl CppInterface {
                             }
                         }
                     }
-                    #[cfg(feature = "std")]
                     #cfg
                     struct #implvtbl_ident<T: #impl_name> (core::marker::PhantomData<T>);
-                    #[cfg(feature = "std")]
                     #cfg
                     impl<T: #impl_name> #implvtbl_ident<T> {
                         const VTABLE: #vtbl_name = #vtbl_name::new::<T>();
                     }
-                    #[cfg(feature = "std")]
                     #cfg
                     impl #name {
                         pub fn new<'a, T: #impl_name>(this: &'a T) -> windows_core::ScopedInterface<'a, Self> {
                             let this = windows_core::ScopedHeap { vtable: &#implvtbl_ident::<T>::VTABLE as *const _ as *const _, this: this as *const _ as *const _ };
-                            let this = core::mem::ManuallyDrop::new(Box::new(this));
+                            let this = core::mem::ManuallyDrop::new(windows_core::imp::Box::new(this));
                             unsafe { windows_core::ScopedInterface::new(core::mem::transmute(&this.vtable)) }
                         }
                     }

crates/libs/bindgen/src/types/delegate.rs

@@ -101,7 +101,7 @@ impl Delegate {
                         invoke,
                     };
                     unsafe {
-                        core::mem::transmute(Box::new(com))
+                        core::mem::transmute(windows_core::imp::Box::new(com))
                     }
                 }
                 #invoke
@@ -158,7 +158,7 @@ impl Delegate {
                     let remaining = (*this).count.release();
 
                     if remaining == 0 {
-                        let _ = Box::from_raw(this);
+                        let _ = windows_core::imp::Box::from_raw(this);
                     }
 
                     remaining

crates/libs/windows/src/extensions/Foundation.rs

@@ -1,7 +1,10 @@
+#[cfg(feature = "std")]
 pub mod Async;
+#[cfg(feature = "std")]
 pub mod AsyncReady;
+#[cfg(feature = "std")]
 pub mod AsyncSpawn;
-#[cfg(feature = "Foundation_Collections")]
+#[cfg(all(feature = "std", feature = "Foundation_Collections"))]
 pub mod Collections;
 #[cfg(feature = "Foundation_Numerics")]
 pub mod Numerics;

crates/libs/windows/src/extensions/Foundation/Numerics/Vector2.rs

@@ -22,15 +22,18 @@ impl Vector2 {
     pub fn length_squared(&self) -> f32 {
         self.dot(self)
     }
+    #[cfg(feature = "std")]
     pub fn length(&self) -> f32 {
         self.length_squared().sqrt()
     }
+    #[cfg(feature = "std")]
     pub fn distance(&self, value: &Self) -> f32 {
         (self - value).length()
     }
     pub fn distance_squared(&self, value: &Self) -> f32 {
         (self - value).length_squared()
     }
+    #[cfg(feature = "std")]
     pub fn normalize(&self) -> Self {
         self / self.length()
     }

crates/libs/windows/src/extensions/Foundation/Numerics/Vector3.rs

@@ -25,15 +25,18 @@ impl Vector3 {
     pub fn length_squared(&self) -> f32 {
         self.dot(self)
     }
+    #[cfg(feature = "std")]
     pub fn length(&self) -> f32 {
         self.length_squared().sqrt()
     }
+    #[cfg(feature = "std")]
     pub fn distance(&self, value: &Self) -> f32 {
         (self - value).length()
     }
     pub fn distance_squared(&self, value: &Self) -> f32 {
         (self - value).length_squared()
     }
+    #[cfg(feature = "std")]
     pub fn normalize(&self) -> Self {
         self / self.length()
     }

crates/libs/windows/src/extensions/Foundation/Numerics/Vector4.rs

@@ -28,15 +28,18 @@ impl Vector4 {
     pub fn length_squared(&self) -> f32 {
         self.dot(self)
     }
+    #[cfg(feature = "std")]
     pub fn length(&self) -> f32 {
         self.length_squared().sqrt()
     }
+    #[cfg(feature = "std")]
     pub fn distance(&self, value: &Self) -> f32 {
         (self - value).length()
     }
     pub fn distance_squared(&self, value: &Self) -> f32 {
         (self - value).length_squared()
     }
+    #[cfg(feature = "std")]
     pub fn normalize(&self) -> Self {
         self / self.length()
     }

crates/tests/misc/no_std/Cargo.toml

@@ -37,6 +37,10 @@ default-features = false
 [dependencies.windows]
 path = "../../../libs/windows"
 default-features = false
+features = [
+    "Foundation_Collections",
+    "Win32_Graphics_Direct3D",
+]
 
 [lints]
 workspace = true