diff --git a/src/lib.rs b/src/lib.rs
index ad81eec..c8b3556 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -271,6 +271,12 @@ impl ImGui {
         let io = self.io();
         io.mouse_wheel
     }
+    pub fn mouse_drag_delta(&self, button: ImMouseButton) -> (f32, f32) {
+        let delta = unsafe {
+            sys::igGetMouseDragDelta_nonUDT2(button as c_int, -1.0)
+        };
+        delta.into()
+    }
     /// Set to `true` to have ImGui draw the cursor in software.
     /// If `false`, the OS cursor is used (default to `false`).
     pub fn set_mouse_draw_cursor(&mut self, value: bool) {