Add platform specific settings

winit/src/application.rs

@@ -98,6 +98,7 @@ pub trait Application: Sized {
 
         let (width, height) = settings.window.size;
 
+        #[cfg(not(target_os = "windows"))]
         let window = WindowBuilder::new()
             .with_title(&title)
             .with_inner_size(winit::dpi::LogicalSize {
@@ -109,6 +110,26 @@ pub trait Application: Sized {
             .build(&event_loop)
             .expect("Open window");
 
+        #[cfg(target_os = "windows")]
+        let window = {
+            use winit::platform::windows::WindowBuilderExtWindows;
+
+            let mut window_builder = WindowBuilder::new()
+                .with_title(&title)
+                .with_inner_size(winit::dpi::LogicalSize {
+                    width: f64::from(width),
+                    height: f64::from(height),
+                })
+                .with_resizable(settings.window.resizable)
+                .with_decorations(settings.window.decorations);
+
+            if let Some(parent) = settings.window.platform_specific.parent {
+                window_builder = window_builder.with_parent_window(parent);
+            }
+
+            window_builder.build(&event_loop).expect("Open window")
+        };
+
         let dpi = window.hidpi_factor();
         let mut size = window.inner_size();
         let mut new_size: Option<winit::dpi::LogicalSize> = None;

winit/src/settings/mod.rs

@@ -1,5 +1,15 @@
 //! Configure your application.
 
+#[cfg(target_os = "windows")]
+#[path = "windows.rs"]
+pub mod platform;
+
+#[cfg(not(target_os = "windows"))]
+#[path = "not_windows.rs"]
+pub mod platform;
+
+pub use platform::PlatformSpecific;
+
 /// The settings of an application.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
 pub struct Settings {
@@ -20,6 +30,9 @@ pub struct Window {
 
     /// Whether the window should have a border, a title bar, etc.
     pub decorations: bool,
+
+    /// Platform specific Setting.
+    pub platform_specific: platform::PlatformSpecific,
 }
 
 impl Default for Window {
@@ -28,6 +41,7 @@ impl Default for Window {
             size: (1024, 768),
             resizable: true,
             decorations: true,
+            platform_specific: Default::default(),
         }
     }
 }

winit/src/settings/not_windows.rs

@@ -0,0 +1,6 @@
+#![cfg(not(target_os = "windows"))]
+//! Platform specific settings for not Windows.
+
+/// The platform specific window settings of an application.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub struct PlatformSpecific {}

winit/src/settings/windows.rs

@@ -0,0 +1,9 @@
+#![cfg(target_os = "windows")]
+//! Platform specific settings for Windows.
+
+/// The platform specific window settings of an application.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub struct PlatformSpecific {
+    /// Parent Window
+    pub parent: Option<winapi::shared::windef::HWND>,
+}