retep998/winapi-rs

Windows API for Rust.

Peter Atashian

@retep998

or rather, the cc crate

聪

@woodgear

locating the km libraries? you mean find the path of those lib?

Peter Atashian

@retep998

most of the stuff in that build.rs you linked is supposed to be handled automatically by rust through the cc crate

Peter Atashian

@retep998

anyway, I kicked things off by filing an issue in Rust rust-lang/rust#59994

聪

@woodgear

seems great

FXTi

@FXTi

Hey guys, I'm new to rust on Windows. I wonder how to use NtDeviceIoControlFile in nt.dll in rust way.

I see it in ntdll.def. But seems there's no rust source code about it in winapi-rs crate. And I think it may concerns bindgen.

anyway, is there a way to call that function? It's quite complicated for me...

Peter Atashian

@retep998

@FXTi that function is in the Windows SDK, so it's just a matter of someone submitting a pull request to winapi adding the bindings for it correctly.

FXTi

@FXTi

@retep998 Like this? retep998/winapi-rs#775

FXTi

@FXTi

Sorry to bother you, another solution found.

Ryan Levick

@rylev

Hello! I was wondering if anyone had a good idea of how complete the winapi crate is in terms of API coverage. Just having some conversations at work about the likelihood of running into unimplemented bindings

Peter Atashian

@retep998

rylev: yes

Ryan Levick

@rylev

@retep998 would you be able to give a rough estimate of API coverage (and I do realize how hard that might be...)

Peter Atashian

@retep998

@rylev maybe 20%?

plus or minus 20%

Ryan Levick

@rylev

Meaning 20% is covered right?

Peter Atashian

@retep998

roughly yeah

the windows sdk is huge

Peter Atashian

@retep998

and unfortunately tools like bindgen don't work very well

Brian Merchant

@bzm3r

what's the preferred way to pass a path to a winapi wrapper?

i'm finding that there's no easy way to go from OsStr to a const * _?

Peter Atashian

@retep998

@bzm3r OsStrExt::encode_wide().chain(once(0)).collect() to get you a Vec<u16>. You can then call .as_ptr() on it to get a pointer to pass to winapi.

@bzm3r As for your ID3D10Blob question, you would call the GetBufferPointer and GetBufferSize methods to get the pointer and size, and pass them to std::slice::from_raw_parts to get a &[T].

If the blob is a unicode string you would get a &[u16] and pass it to OsStringExt::from_wide()

Barret Rennie

@brennie

Howdy. Is there an expected release date for the 0.38? I'd like to use the DISK_PERFORMANCE struct that was added recently.

Peter Atashian

@retep998

@brennie I am currently in the process of verifying I did not break backwards compatibility before I publish a new version.

Barret Rennie

@brennie

👍

MarkAnthonyM

@MarkAnthonyM

How exactly do I go about using the struct CHAR_INFO_Char? I'm trying to use it in conjunction with the struct CHAR_INFO but I'm not sure how to go about populating its private field.

MarkAnthonyM

@MarkAnthonyM

actually, scratch that. I think I found an example I can work off of

Peter Atashian

@retep998

@MarkAnthonyM Initialize CHAR_INFO with zeroed() or Default and then use the methods to access the union variant and assign the value you want

it'll be better in winapi 0.4 which will use actual unions

MarkAnthonyM

@MarkAnthonyM

Ah, I was just looking over the function of zeroed() in the rust docs when you sent this message. Many thanks!

Hilmar Gústafsson

@LiHRaM

Can anyone tell me why this code is failing on CoCreateInstance with a class not found error? https://github.com/LiHRaM/egpu-rs/blob/master/src/main.rs

the HRESULT specifically is: 0x80040154

Dan Kyung

@dank

How do I use ReadFile? More specifically, I'm wondering what types to pass into lpBuffer. let mut buffer_read: LPVOID = std::ptr::null_mut(); is the closest I got and that remains null.

Dan Kyung

@dank

let mut buffer_read = vec![0; 5]; worked ^

Mathieu Tarral

@Wenzel

hi !

small issue here, I can't figure out how to import tlhelp32

error[E0432]: unresolved import `winapi::um::tlhelp32`

import winapi::um works though

ok, i have to enable a feature to gain access to tlhelp32

matrixbot

@matrixbot

lihram Hey, does anyone know if winapi-rs has support for toast notifications, or how I might access them?

lihram https://docs.microsoft.com/en-us/windows/uwp/design/shell/tiles-and-notifications/send-local-toast-desktop-cpp-wrl

lihram This is the relevant windows documentation for C++

matrixbot

@matrixbot

lihram Nvm, found it here: https://github.com/contextfree/winrt-rust/blob/master/examples/toast_notify.rs

Lazy-256

@Lazy-256

Hi,
I am trying to use UIAutomation in my project.
I've found out only https://lib.rs/install/uiautomationcore-sys
But there is no documentation how to use it. Maybe anybody knows or there is better way? Thanks!

Michael

@rucoder_gitlab

Hello, I'm struggling with following problem:
I have a BITMAP declared like this

            let mut bmp: BITMAP = mem::uninitialized();

then I'm trying to call a GetObject

            GetObjectW(
                bitmap as HANDLE,
                mem::size_of::<BITMAP>() as i32,
                &mut bmp as * LPVOID,
            );

And I'm getting

error[E0606]: casting `&mut winapi::um::wingdi::BITMAP` as `*mut std::ffi::c_void` is invalid
   --> src\main.rs:118:17
    |
118 |                 &mut bmp as LPVOID,
    |                 ^^^^^^^^^^^^^^^^^^

I've tried different combinations of types in cast expression but still cannot find a correct one

Peter Atashian

@retep998

@rucoder_gitlab &mut bmp as *mut BITMAP as LPVOID

@rucoder_gitlab Alternatively <*mut _>::cast(&mut bmp)

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