From d1ad945268bc79b80c8767c42bacca0c520665d9 Mon Sep 17 00:00:00 2001
From: Jack Zhang <954294627@qq.com>
Date: Sun, 1 May 2022 19:58:45 +0800
Subject: [PATCH 1/2] Fixed bug : ImGui.IsKeyPressed(uint user_key_index) API
 didn't work with some native keys.

---
 src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs b/src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs
index 829b83b8..8d427916 100644
--- a/src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs
+++ b/src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs
@@ -216,9 +216,17 @@ protected virtual void UpdateInput()
             var mouse = Mouse.GetState();
             var keyboard = Keyboard.GetState();
 
-            for (int i = 0; i < _keys.Count; i++)
+            // This implementation is WRONG, because it only handled ImGuiKey-related native key, and it didn't handle other native keys.
+            //for (int i = 0; i < _keys.Count; i++)
+            //{
+            //    io.KeysDown[_keys[i]] = keyboard.IsKeyDown((Keys)_keys[i]);
+            //}
+
+            // Here is my implementation, which works fine when you call ImGui.IsKeyPressed(uint user_key_index) API.
+            var pressedKeys = keyboard.GetPressedKeys();
+            foreach (var pressedKey in pressedKeys)
             {
-                io.KeysDown[_keys[i]] = keyboard.IsKeyDown((Keys)_keys[i]);
+                io.KeysDown[(int)pressedKey] = true;
             }
 
             io.KeyShift = keyboard.IsKeyDown(Keys.LeftShift) || keyboard.IsKeyDown(Keys.RightShift);

From 128a596e41bdc5283fe5dac282d68656b7024e3b Mon Sep 17 00:00:00 2001
From: Jack Zhang <954294627@qq.com>
Date: Sun, 1 May 2022 20:16:45 +0800
Subject: [PATCH 2/2] Fixed bug : ImGui.IsKeyPressed(uint user_key_index) API
 didn't work with some native keys.

---
 src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs b/src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs
index 8d427916..0f9a8be6 100644
--- a/src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs
+++ b/src/ImGui.NET.SampleProgram.XNA/ImGuiRenderer.cs
@@ -223,6 +223,14 @@ protected virtual void UpdateInput()
             //}
 
             // Here is my implementation, which works fine when you call ImGui.IsKeyPressed(uint user_key_index) API.
+
+            // Set all of the XNA native keys' state to NotKeyDown.
+            for (var key = Keys.None; key <= Keys.OemEnlW; key++)
+            {
+                io.KeysDown[(int)key] = false;
+            }
+            
+            // Set io.KeysDown[nativeKeyIndex] from XNA keyboard state.
             var pressedKeys = keyboard.GetPressedKeys();
             foreach (var pressedKey in pressedKeys)
             {