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-rw-r--r--src/win32/init.rs26
1 files changed, 12 insertions, 14 deletions
diff --git a/src/win32/init.rs b/src/win32/init.rs
index 09d5878..b458d95 100644
--- a/src/win32/init.rs
+++ b/src/win32/init.rs
@@ -37,16 +37,15 @@ pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<C
{
// initializing variables to be sent to the task
let title = builder.title.as_slice().utf16_units()
- .chain(Some(0).into_iter()).collect::<Vec<u16>>(); // title to utf16
- //let hints = hints.clone();
+ .chain(Some(0).into_iter()).collect::<Vec<u16>>(); // title to utf16
+
let (tx, rx) = channel();
- // GetMessage must be called in the same thread as CreateWindow,
- // so we create a new thread dedicated to this window.
- // This is the only safe method. Using `nosend` wouldn't work for non-native runtime.
+ // `GetMessage` must be called in the same thread as CreateWindow, so we create a new thread
+ // dedicated to this window.
thread::spawn(move || {
unsafe {
- // sending
+ // creating and sending the `Window`
match init(title, builder, builder_sharelists) {
Ok(w) => tx.send(Ok(w)).ok(),
Err(e) => {
@@ -65,7 +64,7 @@ pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<C
}
user32::TranslateMessage(&msg);
- user32::DispatchMessageW(&msg); // calls `callback` (see below)
+ user32::DispatchMessageW(&msg); // calls `callback` (see the callback module)
}
}
});
@@ -106,9 +105,10 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
// adjusting the window coordinates using the style
user32::AdjustWindowRectEx(&mut rect, style, 0, ex_style);
- // getting the address of wglCreateContextAttribsARB
+ // the first step is to create a dummy window and a dummy context which we will use
+ // to load the pointers to some functions in the OpenGL driver in `extra_functions`
let extra_functions = {
- // creating a dummy invisible window for GL initialization
+ // creating a dummy invisible window
let dummy_window = {
let handle = user32::CreateWindowExW(ex_style, class_name.as_ptr(),
title.as_ptr() as winapi::LPCWSTR,
@@ -140,10 +140,8 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
try!(set_pixel_format(&dummy_window, id));
}
- // creating the dummy OpenGL context
+ // creating the dummy OpenGL context and making it current
let dummy_context = try!(create_context(None, &dummy_window, None));
-
- // making context current
let current_context = try!(CurrentContextGuard::make_current(&dummy_window,
&dummy_context));
@@ -158,7 +156,7 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
})
};
- // creating the real window this time
+ // creating the real window this time, by using the functions in `extra_functions`
let real_window = {
let (width, height) = if builder.monitor.is_some() || builder.dimensions.is_some() {
(Some(rect.right - rect.left), Some(rect.bottom - rect.top))
@@ -216,7 +214,7 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
user32::SetForegroundWindow(real_window.0);
}
- // filling the WINDOW task-local storage
+ // filling the WINDOW task-local storage so that we can start receiving events
let events_receiver = {
let (tx, rx) = channel();
let mut tx = Some(tx);