diff --git a/src/lib.rs b/src/lib.rs
index de8a83e..9b43eda 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,7 @@
 mod api;
 mod constraints;
-mod settings;
 
 pub mod geom;
+pub mod settings;
 
 pub use settings::Settings;
diff --git a/src/settings.h b/src/settings.h
index 0470675..0a08f51 100644
--- a/src/settings.h
+++ b/src/settings.h
@@ -5,12 +5,12 @@
 
 #include <stdbool.h>
 
-typedef enum {
-	SETTINGS_FOR_SINGLE_WINDOW_NEVER,
-	SETTINGS_FOR_SINGLE_WINDOW_ALWAYS,
-	SETTINGS_FOR_SINGLE_WINDOW_NOT_IN_FULLSCREEN,
-	SETTINGS_FOR_SINGLE_WINDOW_NOBODY_IS_FULLSCREEN,
-} SettingsForSingleWindow;
+typedef unsigned char SettingsForSingleWindow;
+
+#define SETTINGS_FOR_SINGLE_WINDOW_NEVER                0
+#define SETTINGS_FOR_SINGLE_WINDOW_ALWAYS               1
+#define SETTINGS_FOR_SINGLE_WINDOW_NOT_IN_FULLSCREEN    2
+#define SETTINGS_FOR_SINGLE_WINDOW_NOBODY_IS_FULLSCREEN 3
 
 bool settings_get_bar_on_top_by_default();
 void settings_set_bar_on_top_by_default(bool new_bar_on_top_by_default);
diff --git a/src/settings.rs b/src/settings.rs
index 1cc1b55..e8a8e29 100644
--- a/src/settings.rs
+++ b/src/settings.rs
@@ -18,6 +18,14 @@ pub struct Settings {
     swallow_floating: bool,
 }
 
+#[derive(Clone, Copy, Debug)]
+pub enum ForSingleWindow {
+    Never,
+    Always,
+    NotInFullscreen,
+    NobodyIsFullscreen,
+}
+
 impl Default for Settings {
     fn default() -> Self {
         Self {
@@ -37,6 +45,35 @@ impl Default for Settings {
     }
 }
 
+impl Default for ForSingleWindow {
+    fn default() -> Self {
+        Self::NobodyIsFullscreen
+    }
+}
+
+impl Into<c_uchar> for ForSingleWindow {
+    fn into(self) -> c_uchar {
+        match self {
+            Self::Never => 0,
+            Self::Always => 1,
+            Self::NotInFullscreen => 2,
+            Self::NobodyIsFullscreen => 3,
+        }
+    }
+}
+
+impl From<c_uchar> for ForSingleWindow {
+    fn from(value: c_uchar) -> Self {
+        match value {
+            0 => Self::Never,
+            1 => Self::Always,
+            2 => Self::NotInFullscreen,
+            3 => Self::NobodyIsFullscreen,
+            _ => panic!("invalid value for type ForSingleWindow"),
+        }
+    }
+}
+
 impl Settings {
     pub fn bar_on_top_by_default(&self) -> bool {
         self.bar_on_top_by_default