diff --git a/QtScrcpy/device/controller/inputconvert/keymap/keymap.h b/QtScrcpy/device/controller/inputconvert/keymap/keymap.h
index f21f814..ffc1d28 100644
--- a/QtScrcpy/device/controller/inputconvert/keymap/keymap.h
+++ b/QtScrcpy/device/controller/inputconvert/keymap/keymap.h
@@ -36,6 +36,20 @@ public:
         QPointF pos = QPointF(0, 0); // normal key
         QPointF extendPos = QPointF(0, 0); // for drag
         double extendOffset = 0.0;  // for steerWheel
+
+        KeyNode(ActionType type = AT_INVALID,
+                int key = Qt::Key_unknown,
+                QPointF pos = QPointF(0, 0),
+                QPointF extendPos = QPointF(0, 0),
+                double extendOffset = 0.0)
+            : type(type)
+            , key(key)
+            , pos(pos)
+            , extendPos(extendPos)
+            , extendOffset(extendOffset)
+        {
+
+        }
     };
 
     struct KeyMapNode {
@@ -112,7 +126,7 @@ private:
     static QString s_keyMapPath;
 
     QVector<KeyMapNode> m_keyMapNodes;
-    KeyNode m_switchKey = { AT_KEY, Qt::Key_QuoteLeft };
+    KeyNode m_switchKey = {AT_KEY, Qt::Key_QuoteLeft};
 
     // just for return
     KeyMapNode m_invalidNode;
diff --git a/QtScrcpy/dialog.ui b/QtScrcpy/dialog.ui
index 0d4440a..f22349b 100644
--- a/QtScrcpy/dialog.ui
+++ b/QtScrcpy/dialog.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>420</width>
-    <height>471</height>
+    <height>492</height>
    </rect>
   </property>
   <property name="minimumSize">
@@ -472,7 +472,7 @@
         </property>
         <property name="maximumSize">
          <size>
-          <width>40</width>
+          <width>60</width>
           <height>16777215</height>
          </size>
         </property>
diff --git a/QtScrcpy/main.cpp b/QtScrcpy/main.cpp
index 2ccb6a6..643eaaf 100644
--- a/QtScrcpy/main.cpp
+++ b/QtScrcpy/main.cpp
@@ -31,8 +31,10 @@ int main(int argc, char *argv[])
 
     //update version
     QStringList versionList = QCoreApplication::applicationVersion().split(".");
-    QString version = versionList[0] + "." + versionList[1] + "." + versionList[2];
-    a.setApplicationVersion(version);
+    if (versionList.size() >= 3) {
+        QString version = versionList[0] + "." + versionList[1] + "." + versionList[2];
+        a.setApplicationVersion(version);
+    }
 
     installTranslator();
 #if defined(Q_OS_WIN32) || defined(Q_OS_OSX)
diff --git a/QtScrcpy/res/Info_mac.plist b/QtScrcpy/res/Info_mac.plist
index cd3c70b..c32ac18 100644
--- a/QtScrcpy/res/Info_mac.plist
+++ b/QtScrcpy/res/Info_mac.plist
@@ -19,13 +19,13 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.0.4</string>
+	<string>1.2.0</string>
 	<key>CFBundleSupportedPlatforms</key>
 	<array>
 		<string>MacOSX</string>
 	</array>
 	<key>CFBundleVersion</key>
-	<string>1.0.4</string>
+	<string>1.2.0</string>
 	<key>LSMinimumSystemVersion</key>
 	<string>10.10</string>
 	<key>NSHumanReadableCopyright</key>
diff --git a/docs/image/显示指针位置.jpg b/docs/image/显示指针位置.jpg
new file mode 100644
index 0000000..a026fac
Binary files /dev/null and b/docs/image/显示指针位置.jpg differ
diff --git a/docs/按键映射说明.md b/docs/按键映射说明.md
index 4c2e447..fbf14f9 100644
--- a/docs/按键映射说明.md
+++ b/docs/按键映射说明.md
@@ -11,6 +11,8 @@
 - 按键映射中的坐标位置都是用相对位置表示的，屏幕的宽高都用1表示，例如屏幕的像素为1920x1080，那么坐标(0.5,0.5)则表示的是
 以屏幕左上角为原点，像素坐标(1920,1080)*(0.5,0.5)=(960,540)的位置。
 - 按键映射中的按键码是用Qt的枚举表示的，详细说明可以[参考Qt文档]( https://doc.qt.io/qt-5/qt.html )(搜索 The key names used by Qt. 可以快速定位)。
+- 开发人员选项中打开如下两个设置，可以方便的观察触摸点的坐标：
+![](image/显示指针位置.jpg)
 
 ### 映射类型说明