Windows: implement with_resizable (#540) (#541)

* Windows: implement with_resizable (#540)

* Fixed typo

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 - On X11, the `Moved` event is no longer sent when the window is resized without changing position.
 - `MouseCursor` and `CursorState` now implement `Default`.
+- `WindowBuilder::with_resizable` implemented for Windows.
 
 # Version 0.15.0 (2018-05-22)
 

examples/no_resize.rs

@@ -0,0 +1,24 @@
+extern crate winit;
+
+fn main() {
+    let mut events_loop = winit::EventsLoop::new();
+
+    let _window = winit::WindowBuilder::new()
+        .with_title("A non-resizable window!")
+        .with_dimensions(200, 200)
+        .with_resizable(false)
+        .build(&events_loop)
+        .unwrap();
+
+    events_loop.run_forever(|event| {
+        println!("{:?}", event);
+
+        match event {
+            winit::Event::WindowEvent {
+                event: winit::WindowEvent::CloseRequested,
+                ..
+            } => winit::ControlFlow::Break,
+            _ => winit::ControlFlow::Continue,
+        }
+    });
+}

src/lib.rs

@@ -422,6 +422,11 @@ pub struct WindowAttributes {
     /// The default is `None`.
     pub max_dimensions: Option<(u32, u32)>,
 
+    /// [Windows only] Whether the window is resizable or not
+    ///
+    /// The default is `true`.
+    pub resizable: bool,
+
     /// Whether the window should be set as fullscreen upon creation.
     ///
     /// The default is `None`.
@@ -475,6 +480,7 @@ impl Default for WindowAttributes {
             dimensions: None,
             min_dimensions: None,
             max_dimensions: None,
+            resizable: true,
             title: "winit window".to_owned(),
             maximized: false,
             fullscreen: None,

src/platform/windows/window.rs

@@ -843,6 +843,10 @@ unsafe fn init(
             style | winuser::WS_VISIBLE
         };
 
+        if !window.resizable {
+            style &= !winuser::WS_SIZEBOX;
+        }
+
         if pl_attribs.parent.is_some() {
             style |= winuser::WS_CHILD;
         }

src/window.rs

@@ -49,6 +49,17 @@ impl WindowBuilder {
         self
     }
 
+    /// Sets whether the window is resizable or not
+    ///
+    /// ## Platform-specific
+    ///
+    /// This only has an effect on Windows.
+    #[inline]
+    pub fn with_resizable(mut self, resizable: bool) -> WindowBuilder {
+        self.window.resizable = resizable;
+        self
+    }
+
     /// Requests a specific title for the window.
     #[inline]
     pub fn with_title<T: Into<String>>(mut self, title: T) -> WindowBuilder {