在 Rust 中,你可以使用 winapi
库来处理 Windows 窗口消息。winapi
是一个用于访问 Windows API 的库,它提供了大量的函数和数据类型,可以帮助你处理窗口消息。
首先,你需要在 Cargo.toml
文件中添加 winapi
和 winuser
依赖:
[dependencies]
winapi = "0.3"
winuser = "0.3"
接下来,你可以使用 winapi
库中的函数来处理窗口消息。以下是一个简单的示例,展示了如何使用 winapi
处理窗口消息:
extern crate winapi;
extern crate winuser;
use std::ffi::c_void;
use std::os::raw::c_uint;
use winapi::shared::minwindef::{HWND, UINT, WPARAM, LPARAM};
use winapi::um::winuser::{RegisterWindowMessage, DefWindowProcW, DispatchMessageW, TranslateMessage};
// 自定义窗口类
const CLASS_NAME: &str = "MyWindowClass";
// 窗口过程函数
fn window_proc(hwnd: HWND, msg: UINT, wparam: WPARAM, lparam: LPARAM) -> c_uint {
match msg {
winuser::WM_DESTROY => {
println!("Window received a WM_DESTROY message. Closing...");
winuser::PostQuitMessage(0);
0
},
_ => DefWindowProcW(hwnd, msg, wparam, lparam),
}
}
fn main() {
// 注册窗口类
unsafe {
let class_atom = winuser::RegisterClassW(winuser::WNDCLASSEXW {
cbSize: std::mem::size_of::<winuser::WNDCLASSEXW>() as u32,
style: 0,
lpfnWndProc: Some(window_proc as WNDPROC),
cbClsExtra: 0,
cbWndExtra: 0,
hInstance: winapi::GetModuleHandleW(None),
hIcon: 0,
hCursor: 0,
hbrBackground: 0,
lpszMenuName: None,
lpszClassName: CLASS_NAME,
hIconSm: 0,
});
if class_atom == 0 {
panic!("Failed to register window class");
}
}
// 创建窗口
let hwnd = unsafe {
winuser::CreateWindowExW(
0,
CLASS_NAME,
"My Window",
winuser::WS_OVERLAPPEDWINDOW,
winuser::CW_USEDEFAULT,
winuser::CW_USEDEFAULT,
800,
600,
None,
None,
winapi::GetModuleHandleW(None),
None,
)
};
if hwnd == 0 {
panic!("Failed to create window");
}
// 消息循环
unsafe {
let mut msg = winuser::MSG::default();
while winuser::GetMessageW(&mut msg, None, 0, 0) != 0 {
if msg.message == winuser::WM_QUIT {
break;
}
TranslateMessage(&msg);
DispatchMessageW(&msg);
}
}
}
这个示例中,我们首先注册了一个窗口类,然后创建了一个窗口。接下来,我们进入一个消息循环,不断地从 GetMessage
函数中获取窗口消息。当收到 WM_QUIT
消息时,我们退出消息循环。对于其他消息,我们使用 DefWindowProc
函数处理它们。在这个简单的示例中,我们只处理了 WM_DESTROY
消息,但你可以根据需要处理其他消息。