@kichristensen Okay, I found an existing case. If you have
struct FOO: BAR {in C, in Rust you would make the first field of FOO be parent: BAR.
|
= note: the lang item is first defined in crate
= note: first definition in
= note: second definition in the local crate (
= note: the lang item is first defined in crate
std (which winapi depends on)= note: first definition in
std loaded from \?\C:\Users\lygstate.rustup\toolchains\nightly-2020-10-01-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib\std-d2161836abc64f12.dll, \?\C:\Users\lygstate.rustup\toolchains\nightly-2020-10-01-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib\libstd-d2161836abc64f12.rlib= note: second definition in the local crate (
rulibc)
error[E0152]: found duplicate lang item `panic_impl`
--> src\lib.rs:89:1
|
89 | pub extern "C" fn rust_begin_unwind(pi: &::core::panic::PanicInfo) -> ! {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: the lang item is first defined in crate `std` (which `winapi` depends on)whichwinapidepends on
How to import winapi and not fetch std?
Hi, I am trying to create a callback interface class, to communicate with BITS service through com api.
Is there any example of how to implement such an interface?
The interface I need to implement:
https://docs.microsoft.com/en-us/windows/win32/api/bits/nn-bits-ibackgroundcopycallback
There is an example for cpp, and I would need to implement it in rust.
Is there any example of how to implement such an interface?
The interface I need to implement:
https://docs.microsoft.com/en-us/windows/win32/api/bits/nn-bits-ibackgroundcopycallback
There is an example for cpp, and I would need to implement it in rust.
@GuyTabak just create a
repr(C) struct with the vtable of the interface as the first element
Then cast as needed
Does anyone know why this array is constrained to only one item? https://docs.rs/winapi/0.3.9/winapi/um/winnt/struct.TOKEN_PRIVILEGES.html#structfield.Privileges
It seems like in order to set multiple privileges, I would need multiple items in the array, per https://docs.microsoft.com/en-us/windows/win32/api/winnt/ns-winnt-token_privileges
I’m just getting started with winapi-rs. Any idea why I can’t
use winapi::um::minwinbase::SECURITY_ATTRIBUTES:error[E0432]: unresolved import `winapi::um::minwinbase` --> src/main.rs:4:17 | 4 | use winapi::um::minwinbase::SECURITY_ATTRIBUTES; | ^^^^^^^^^^ Could not find `minwinbase` in `um`
I found this in Google search. I have a similar problem, how did you fix it? I get expected struct `winapi::minwinbase::SECURITY_ATTRIBUTES`, found struct `winapi::um::minwinbase::SECURITY_ATTRIBUTES``
@endeav0r
You posted that in 2018
What is actually going on with the namespaces
But
winapi::minwinbase doesn't exist for me.
So if anyone knows it would be worth putting in documentation
Does anyone know why this array is constrained to only one item? https://docs.rs/winapi/0.3.9/winapi/um/winnt/struct.TOKEN_PRIVILEGES.html#structfield.Privileges
I'm also curious about how to read multiple entries and evaluate the size of such struct when used as a buffer.
I wrote a simple program to get the active window title, see below. But I'm not sure how to create and pass an empty string to be filled from a Windows function and then convert it to a Rust String. My program works, but is there an easier way to do it, maybe with OsStrExt? Also is the rest of the program ok? I'm relatively new to Rust itself.
use std::io::{Error, ErrorKind};
use winapi;
use winapi::shared::minwindef::*;
use winapi::shared::windef::*;
fn get_active_window_title() -> Result<String, Error> {
let handle = unsafe { winapi::um::winuser::GetForegroundWindow() };
if handle as UINT == winapi::um::winuser::WM_NULL {
return Err(Error::new(ErrorKind::Other, "GetForegroundWindow failed"));
}
let title = unsafe {
const MAX_TITLE_LENGTH: usize = 255;
let mut v: [u16; MAX_TITLE_LENGTH] = [0; MAX_TITLE_LENGTH];
let read_len =
winapi::um::winuser::GetWindowTextW(handle as HWND, v.as_mut_ptr(), MAX_TITLE_LENGTH as i32);
String::from_utf16_lossy(&v[0..read_len as usize])
};
Ok(title)
}
fn main() {
println!(
"active window title: {}",
get_active_window_title().unwrap()
);
}
And I noticed that "handle" has a different type than "WM_NULL". Is it right to cast like I did in my program?