diff --git a/src/klocalizedstring.rs b/src/klocalizedstring.rs
new file mode 100644
index 0000000..d0e7872
--- /dev/null
+++ b/src/klocalizedstring.rs
@@ -0,0 +1,32 @@
+use cpp::{cpp, cpp_class};
+use qmetaobject::QByteArray;
+use std::ffi::CStr;
+
+cpp! {{
+    #include <KLocalizedString>
+    #include <QtCore/QByteArray>
+}}
+
+cpp_class!(
+    /// Wrapper around [`KLocalizedString`][class] class
+    ///
+    /// [class]: https://api.kde.org/frameworks/ki18n/html/classKLocalizedString.html
+    pub unsafe struct KLocalizedString as "KLocalizedString"
+);
+
+impl KLocalizedString {
+    /// Set Application Domain
+    pub fn set_application_domain(domain: &CStr) {
+        let domain_ptr = domain.as_ptr();
+        cpp!(unsafe [domain_ptr as "char*"] {
+            KLocalizedString::setApplicationDomain(domain_ptr);
+        });
+    }
+
+    /// Get Application Domain
+    pub fn application_domain() -> QByteArray {
+        cpp!(unsafe [] -> QByteArray as "QByteArray" {
+            return KLocalizedString::applicationDomain();
+        })
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index fab00b0..46a5d3c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -46,4 +46,9 @@
 //! ```
 
 pub mod klocalizedcontext;
-pub use klocalizedcontext::KLocalizedContext;
+pub mod klocalizedstring;
+
+pub mod prelude {
+    pub use crate::klocalizedcontext::KLocalizedContext;
+    pub use crate::klocalizedstring::KLocalizedString;
+}
diff --git a/tests/klocalizedcontext_tests.rs b/tests/klocalizedcontext_tests.rs
index 7c4ebec..0ff2cfc 100644
--- a/tests/klocalizedcontext_tests.rs
+++ b/tests/klocalizedcontext_tests.rs
@@ -1,4 +1,4 @@
-use ki18n_rs::KLocalizedContext;
+use ki18n_rs::klocalizedcontext::KLocalizedContext;
 use qmetaobject::prelude::*;
 mod common;
 
diff --git a/tests/klocalizedstring_tests.rs b/tests/klocalizedstring_tests.rs
new file mode 100644
index 0000000..38d29dc
--- /dev/null
+++ b/tests/klocalizedstring_tests.rs
@@ -0,0 +1,14 @@
+use ki18n_rs::klocalizedstring::KLocalizedString;
+use std::ffi::CString;
+
+#[test]
+fn application_domain() {
+    const APPLICATION_DOMAIN: &str = "KI18n";
+    let domain = CString::new(APPLICATION_DOMAIN).unwrap();
+
+    KLocalizedString::set_application_domain(&domain);
+    let domain = KLocalizedString::application_domain();
+    println!("{:#?}", domain);
+
+    assert_eq!(domain.to_str().unwrap(), "KI18n");
+}