Switch to dwmapi

Cargo.toml

@@ -37,16 +37,18 @@ glutin_core_graphics = "0"
 glutin_core_foundation = "0"
 
 [target.i686-pc-windows-gnu.dependencies]
-winapi = "0.1"
+winapi = "~0.1.18"
 gdi32-sys = "0.1"
 user32-sys = "~0.1.1"
 kernel32-sys = "0.1"
+dwmapi-sys = "0.1"
 
 [target.x86_64-pc-windows-gnu.dependencies]
-winapi = "0.1"
+winapi = "~0.1.18"
 gdi32-sys = "0.1"
 user32-sys = "~0.1.1"
 kernel32-sys = "0.1"
+dwmapi-sys = "0.1"
 
 [target.i686-unknown-linux-gnu.dependencies]
 osmesa-sys = "0.0.5"

src/api/win32/init.rs

@@ -25,6 +25,7 @@ use std::sync::mpsc::channel;
 
 use winapi;
 use kernel32;
+use dwmapi;
 use user32;
 
 use api::wgl;
@@ -223,15 +224,8 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
             fTransitionOnMaximized: 0,
         };
 
-        let dll = kernel32::LoadLibraryA(b"dwmapi.dll\0".as_ptr() as *const _);
-        if !dll.is_null() {
-            let pr = kernel32::GetProcAddress(dll, b"DwmEnableBlurBehindWindow\0".as_ptr() as *const _);
-            if !pr.is_null() {
-                let pr: unsafe extern "system" fn(winapi::HWND, *const winapi::DWM_BLURBEHIND)
-                        -> winapi::HRESULT = mem::transmute(pr);
-                pr(real_window.0, &bb);
-            }
-            kernel32::FreeLibrary(dll);
+        unsafe {
+            dwmapi::DwmEnableBlurBehindWindow(real_window.0, &bb);
         }
     }
 

src/lib.rs

@@ -40,6 +40,8 @@ extern crate kernel32;
 extern crate gdi32;
 #[cfg(target_os = "windows")]
 extern crate user32;
+#[cfg(target_os = "windows")]
+extern crate dwmapi;
 #[cfg(target_os = "macos")]
 #[macro_use]
 extern crate objc;