add demo
diff --git a/demo/chatdialog.ui b/demo/chatdialog.ui
new file mode 100644
index 0000000..ed466e7
--- /dev/null
+++ b/demo/chatdialog.ui
@@ -0,0 +1,71 @@
+<ui version="4.0">
+ <class>ChatDialog</class>
+ <widget class="QDialog" name="ChatDialog">
+ <property name="geometry">
+ <rect>
+ <x>0</x>
+ <y>0</y>
+ <width>600</width>
+ <height>400</height>
+ </rect>
+ </property>
+ <property name="windowTitle">
+ <string>Sync Demo</string>
+ </property>
+ <layout class="QVBoxLayout">
+ <property name="spacing">
+ <number>6</number>
+ </property>
+ <item>
+ <layout class="QHBoxLayout">
+ <property name="margin">
+ <number>0</number>
+ </property>
+ <property name="spacing">
+ <number>6</number>
+ </property>
+ <item>
+ <widget class="QTextEdit" name="textEdit">
+ <property name="focusPolicy">
+ <enum>Qt::NoFocus</enum>
+ </property>
+ <property name="readOnly">
+ <bool>true</bool>
+ </property>
+ </widget>
+ </item>
+ <item>
+ <widget class="QListWidget" name="listWidget">
+ <property name="focusPolicy">
+ <enum>Qt::NoFocus</enum>
+ </property>
+ </widget>
+ </item>
+ </layout>
+ </item>
+ <item>
+ <layout class="QHBoxLayout">
+ <property name="margin">
+ <number>0</number>
+ </property>
+ <property name="spacing">
+ <number>6</number>
+ </property>
+ <item>
+ <widget class="QLabel" name="label">
+ <property name="text">
+ <string>Message:</string>
+ </property>
+ </widget>
+ </item>
+ <item>
+ <widget class="QLineEdit" name="lineEdit" />
+ </item>
+ </layout>
+ </item>
+ </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
+