improve error handling

src/main.rs

@@ -16,8 +16,7 @@ fn main() {
 fn run() -> Result<(), Box<dyn std::error::Error>> {
     let args: Vec<String> = env::args().collect();
     if args.len() != 2 {
-        eprintln!("Usage: {} <program_path>", args[0]);
-        std::process::exit(1);
+        return Err("Invalid arguments".into());
     }
     let exe_path = env::current_exe()?;
     let exe_dir = exe_path
@@ -28,13 +27,18 @@ fn run() -> Result<(), Box<dyn std::error::Error>> {
     let params = content.trim();
     let mut cmd = Command::new(&args[1]);
     cmd.arg(params);
-    cmd.spawn().expect("Failed to start program");
+    if let Err(e) = cmd.spawn() {
+        return Err(format!("Failed to start program\n{}\n{}\n{}", e, &args[1], params).into());
+    }
     Ok(())
 }
 
 fn show_error(message: &str) {
     let wide: Vec<u16> = OsStr::new(message).encode_wide().chain(Some(0)).collect();
-    let title: Vec<u16> = OsStr::new("Error").encode_wide().chain(Some(0)).collect();
+    let title: Vec<u16> = OsStr::new("Mihomo Party Runner")
+        .encode_wide()
+        .chain(Some(0))
+        .collect();
     unsafe {
         MessageBoxW(std::ptr::null_mut(), wide.as_ptr(), title.as_ptr(), 0);
     }