diff --git a/Bin/SunnyUI.Demo.exe b/Bin/SunnyUI.Demo.exe
index a69d8ad5..b7b00f09 100644
Binary files a/Bin/SunnyUI.Demo.exe and b/Bin/SunnyUI.Demo.exe differ
diff --git a/Bin/SunnyUI.dll b/Bin/SunnyUI.dll
index fc3115d6..f5531a8e 100644
Binary files a/Bin/SunnyUI.dll and b/Bin/SunnyUI.dll differ
diff --git a/SunnyUI.Demo/Charts/FPieChart.Designer.cs b/SunnyUI.Demo/Charts/FPieChart.Designer.cs
index 9c1aa4ae..d614c06f 100644
--- a/SunnyUI.Demo/Charts/FPieChart.Designer.cs
+++ b/SunnyUI.Demo/Charts/FPieChart.Designer.cs
@@ -28,17 +28,16 @@
         /// </summary>
         private void InitializeComponent()
         {
-            this.components = new System.ComponentModel.Container();
             this.uiLine1 = new Sunny.UI.UILine();
             this.PieChart = new Sunny.UI.UIPieChart();
-            this.uiImageButton1 = new Sunny.UI.UIImageButton();
-            this.uiImageButton2 = new Sunny.UI.UIImageButton();
-            this.uiImageButton3 = new Sunny.UI.UIImageButton();
             this.uiSymbolButton1 = new Sunny.UI.UISymbolButton();
+            this.uiImageButton3 = new Sunny.UI.UIImageButton();
+            this.uiImageButton2 = new Sunny.UI.UIImageButton();
+            this.uiImageButton1 = new Sunny.UI.UIImageButton();
             this.PagePanel.SuspendLayout();
-            ((System.ComponentModel.ISupportInitialize)(this.uiImageButton1)).BeginInit();
-            ((System.ComponentModel.ISupportInitialize)(this.uiImageButton2)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.uiImageButton3)).BeginInit();
+            ((System.ComponentModel.ISupportInitialize)(this.uiImageButton2)).BeginInit();
+            ((System.ComponentModel.ISupportInitialize)(this.uiImageButton1)).BeginInit();
             this.SuspendLayout();
             // 
             // PagePanel
@@ -69,6 +68,7 @@
             this.PieChart.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(54)))), ((int)(((byte)(54)))), ((int)(((byte)(54)))));
             this.PieChart.LegendFont = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
             this.PieChart.Location = new System.Drawing.Point(30, 48);
+            this.PieChart.MinimumSize = new System.Drawing.Size(1, 1);
             this.PieChart.Name = "PieChart";
             this.PieChart.RectSides = System.Windows.Forms.ToolStripStatusLabelBorderSides.None;
             this.PieChart.Size = new System.Drawing.Size(670, 400);
@@ -76,33 +76,19 @@
             this.PieChart.TabIndex = 20;
             this.PieChart.Text = "uiPieChart1";
             // 
-            // uiImageButton1
+            // uiSymbolButton1
             // 
-            this.uiImageButton1.Cursor = System.Windows.Forms.Cursors.Hand;
-            this.uiImageButton1.Font = new System.Drawing.Font("微软雅黑", 12F);
-            this.uiImageButton1.Image = global::Sunny.UI.Demo.Properties.Resources.ChartDefaultStyle;
-            this.uiImageButton1.Location = new System.Drawing.Point(30, 466);
-            this.uiImageButton1.Name = "uiImageButton1";
-            this.uiImageButton1.Size = new System.Drawing.Size(100, 27);
-            this.uiImageButton1.TabIndex = 21;
-            this.uiImageButton1.TabStop = false;
-            this.uiImageButton1.Text = "      Default";
-            this.uiImageButton1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
-            this.uiImageButton1.Click += new System.EventHandler(this.uiImageButton1_Click);
-            // 
-            // uiImageButton2
-            // 
-            this.uiImageButton2.Cursor = System.Windows.Forms.Cursors.Hand;
-            this.uiImageButton2.Font = new System.Drawing.Font("微软雅黑", 12F);
-            this.uiImageButton2.Image = global::Sunny.UI.Demo.Properties.Resources.ChartPlainStyle;
-            this.uiImageButton2.Location = new System.Drawing.Point(136, 466);
-            this.uiImageButton2.Name = "uiImageButton2";
-            this.uiImageButton2.Size = new System.Drawing.Size(100, 27);
-            this.uiImageButton2.TabIndex = 22;
-            this.uiImageButton2.TabStop = false;
-            this.uiImageButton2.Text = "      Plain";
-            this.uiImageButton2.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
-            this.uiImageButton2.Click += new System.EventHandler(this.uiImageButton2_Click);
+            this.uiSymbolButton1.Cursor = System.Windows.Forms.Cursors.Hand;
+            this.uiSymbolButton1.Font = new System.Drawing.Font("微软雅黑", 12F);
+            this.uiSymbolButton1.Location = new System.Drawing.Point(348, 466);
+            this.uiSymbolButton1.MinimumSize = new System.Drawing.Size(1, 1);
+            this.uiSymbolButton1.Name = "uiSymbolButton1";
+            this.uiSymbolButton1.Padding = new System.Windows.Forms.Padding(28, 0, 0, 0);
+            this.uiSymbolButton1.Size = new System.Drawing.Size(100, 27);
+            this.uiSymbolButton1.Symbol = 61952;
+            this.uiSymbolButton1.TabIndex = 24;
+            this.uiSymbolButton1.Text = "数据";
+            this.uiSymbolButton1.Click += new System.EventHandler(this.uiSymbolButton1_Click);
             // 
             // uiImageButton3
             // 
@@ -118,18 +104,33 @@
             this.uiImageButton3.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
             this.uiImageButton3.Click += new System.EventHandler(this.uiImageButton3_Click);
             // 
-            // uiSymbolButton1
+            // uiImageButton2
             // 
-            this.uiSymbolButton1.Cursor = System.Windows.Forms.Cursors.Hand;
-            this.uiSymbolButton1.Font = new System.Drawing.Font("微软雅黑", 12F);
-            this.uiSymbolButton1.Location = new System.Drawing.Point(348, 466);
-            this.uiSymbolButton1.Name = "uiSymbolButton1";
-            this.uiSymbolButton1.Padding = new System.Windows.Forms.Padding(28, 0, 0, 0);
-            this.uiSymbolButton1.Size = new System.Drawing.Size(100, 27);
-            this.uiSymbolButton1.Symbol = 61952;
-            this.uiSymbolButton1.TabIndex = 24;
-            this.uiSymbolButton1.Text = "数据";
-            this.uiSymbolButton1.Click += new System.EventHandler(this.uiSymbolButton1_Click);
+            this.uiImageButton2.Cursor = System.Windows.Forms.Cursors.Hand;
+            this.uiImageButton2.Font = new System.Drawing.Font("微软雅黑", 12F);
+            this.uiImageButton2.Image = global::Sunny.UI.Demo.Properties.Resources.ChartPlainStyle;
+            this.uiImageButton2.Location = new System.Drawing.Point(136, 466);
+            this.uiImageButton2.Name = "uiImageButton2";
+            this.uiImageButton2.Size = new System.Drawing.Size(100, 27);
+            this.uiImageButton2.TabIndex = 22;
+            this.uiImageButton2.TabStop = false;
+            this.uiImageButton2.Text = "      Plain";
+            this.uiImageButton2.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
+            this.uiImageButton2.Click += new System.EventHandler(this.uiImageButton2_Click);
+            // 
+            // uiImageButton1
+            // 
+            this.uiImageButton1.Cursor = System.Windows.Forms.Cursors.Hand;
+            this.uiImageButton1.Font = new System.Drawing.Font("微软雅黑", 12F);
+            this.uiImageButton1.Image = global::Sunny.UI.Demo.Properties.Resources.ChartDefaultStyle;
+            this.uiImageButton1.Location = new System.Drawing.Point(30, 466);
+            this.uiImageButton1.Name = "uiImageButton1";
+            this.uiImageButton1.Size = new System.Drawing.Size(100, 27);
+            this.uiImageButton1.TabIndex = 21;
+            this.uiImageButton1.TabStop = false;
+            this.uiImageButton1.Text = "      Default";
+            this.uiImageButton1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
+            this.uiImageButton1.Click += new System.EventHandler(this.uiImageButton1_Click);
             // 
             // FPieChart
             // 
@@ -140,9 +141,9 @@
             this.Symbol = 61952;
             this.Text = "PieChart";
             this.PagePanel.ResumeLayout(false);
-            ((System.ComponentModel.ISupportInitialize)(this.uiImageButton1)).EndInit();
-            ((System.ComponentModel.ISupportInitialize)(this.uiImageButton2)).EndInit();
             ((System.ComponentModel.ISupportInitialize)(this.uiImageButton3)).EndInit();
+            ((System.ComponentModel.ISupportInitialize)(this.uiImageButton2)).EndInit();
+            ((System.ComponentModel.ISupportInitialize)(this.uiImageButton1)).EndInit();
             this.ResumeLayout(false);
 
         }
diff --git a/SunnyUI.Demo/Charts/FPieChart.resx b/SunnyUI.Demo/Charts/FPieChart.resx
new file mode 100644
index 00000000..1af7de15
--- /dev/null
+++ b/SunnyUI.Demo/Charts/FPieChart.resx
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
\ No newline at end of file
diff --git a/SunnyUI.Demo/Controls/FPanel.Designer.cs b/SunnyUI.Demo/Controls/FPanel.Designer.cs
index 9334660e..8e6fd297 100644
--- a/SunnyUI.Demo/Controls/FPanel.Designer.cs
+++ b/SunnyUI.Demo/Controls/FPanel.Designer.cs
@@ -37,9 +37,9 @@
             // 
             // PagePanel
             // 
+            this.PagePanel.Controls.Add(this.uiPanel1);
             this.PagePanel.Controls.Add(this.uiTitlePanel2);
             this.PagePanel.Controls.Add(this.uiGroupBox1);
-            this.PagePanel.Controls.Add(this.uiPanel1);
             this.PagePanel.Controls.Add(this.uiTitlePanel1);
             this.PagePanel.Size = new System.Drawing.Size(800, 453);
             // 
diff --git a/SunnyUI.Demo/SunnyUI.Demo.csproj b/SunnyUI.Demo/SunnyUI.Demo.csproj
index bca3452a..ce5804fb 100644
--- a/SunnyUI.Demo/SunnyUI.Demo.csproj
+++ b/SunnyUI.Demo/SunnyUI.Demo.csproj
@@ -319,6 +319,9 @@
     <EmbeddedResource Include="Charts\FLineChart.resx">
       <DependentUpon>FLineChart.cs</DependentUpon>
     </EmbeddedResource>
+    <EmbeddedResource Include="Charts\FPieChart.resx">
+      <DependentUpon>FPieChart.cs</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="Controls\FAvatar.resx">
       <DependentUpon>FAvatar.cs</DependentUpon>
     </EmbeddedResource>
diff --git a/SunnyUI/Controls/DropItem/UIDateItem.cs b/SunnyUI/Controls/DropItem/UIDateItem.cs
index 1eb9142b..86b671df 100644
--- a/SunnyUI/Controls/DropItem/UIDateItem.cs
+++ b/SunnyUI/Controls/DropItem/UIDateItem.cs
@@ -64,9 +64,9 @@ namespace Sunny.UI
             this.tabPage2.SuspendLayout();
             this.tabPage3.SuspendLayout();
             this.SuspendLayout();
-            //
+            // 
             // TopPanel
-            //
+            // 
             this.TopPanel.Controls.Add(this.b4);
             this.TopPanel.Controls.Add(this.b3);
             this.TopPanel.Controls.Add(this.b2);
@@ -76,6 +76,7 @@ namespace Sunny.UI
             this.TopPanel.Font = new System.Drawing.Font("微软雅黑", 12F);
             this.TopPanel.Location = new System.Drawing.Point(0, 0);
             this.TopPanel.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
+            this.TopPanel.MinimumSize = new System.Drawing.Size(1, 1);
             this.TopPanel.Name = "TopPanel";
             this.TopPanel.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
             this.TopPanel.RectSides = ((System.Windows.Forms.ToolStripStatusLabelBorderSides)(((System.Windows.Forms.ToolStripStatusLabelBorderSides.Left | System.Windows.Forms.ToolStripStatusLabelBorderSides.Top)
@@ -86,9 +87,9 @@ namespace Sunny.UI
             this.TopPanel.TabIndex = 0;
             this.TopPanel.Text = "2020-05-05";
             this.TopPanel.Click += new System.EventHandler(this.TopPanel_Click);
-            //
+            // 
             // b4
-            //
+            // 
             this.b4.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
             this.b4.BackColor = System.Drawing.Color.Transparent;
             this.b4.Cursor = System.Windows.Forms.Cursors.Hand;
@@ -98,6 +99,7 @@ namespace Sunny.UI
             this.b4.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(80)))), ((int)(((byte)(160)))), ((int)(((byte)(255)))));
             this.b4.ImageInterval = 0;
             this.b4.Location = new System.Drawing.Point(427, 4);
+            this.b4.MinimumSize = new System.Drawing.Size(1, 1);
             this.b4.Name = "b4";
             this.b4.Padding = new System.Windows.Forms.Padding(24, 0, 0, 0);
             this.b4.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
@@ -109,9 +111,9 @@ namespace Sunny.UI
             this.b4.Symbol = 61697;
             this.b4.TabIndex = 3;
             this.b4.Click += new System.EventHandler(this.b4_Click);
-            //
+            // 
             // b3
-            //
+            // 
             this.b3.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
             this.b3.BackColor = System.Drawing.Color.Transparent;
             this.b3.Cursor = System.Windows.Forms.Cursors.Hand;
@@ -121,6 +123,7 @@ namespace Sunny.UI
             this.b3.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(80)))), ((int)(((byte)(160)))), ((int)(((byte)(255)))));
             this.b3.ImageInterval = 0;
             this.b3.Location = new System.Drawing.Point(391, 4);
+            this.b3.MinimumSize = new System.Drawing.Size(1, 1);
             this.b3.Name = "b3";
             this.b3.Padding = new System.Windows.Forms.Padding(24, 0, 0, 0);
             this.b3.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
@@ -132,9 +135,9 @@ namespace Sunny.UI
             this.b3.Symbol = 61701;
             this.b3.TabIndex = 2;
             this.b3.Click += new System.EventHandler(this.b3_Click);
-            //
+            // 
             // b2
-            //
+            // 
             this.b2.BackColor = System.Drawing.Color.Transparent;
             this.b2.Cursor = System.Windows.Forms.Cursors.Hand;
             this.b2.FillColor = System.Drawing.Color.White;
@@ -143,6 +146,7 @@ namespace Sunny.UI
             this.b2.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(80)))), ((int)(((byte)(160)))), ((int)(((byte)(255)))));
             this.b2.ImageInterval = 0;
             this.b2.Location = new System.Drawing.Point(40, 4);
+            this.b2.MinimumSize = new System.Drawing.Size(1, 1);
             this.b2.Name = "b2";
             this.b2.Padding = new System.Windows.Forms.Padding(24, 0, 0, 0);
             this.b2.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
@@ -154,9 +158,9 @@ namespace Sunny.UI
             this.b2.Symbol = 61700;
             this.b2.TabIndex = 1;
             this.b2.Click += new System.EventHandler(this.b2_Click);
-            //
+            // 
             // b1
-            //
+            // 
             this.b1.BackColor = System.Drawing.Color.Transparent;
             this.b1.Cursor = System.Windows.Forms.Cursors.Hand;
             this.b1.FillColor = System.Drawing.Color.White;
@@ -165,6 +169,7 @@ namespace Sunny.UI
             this.b1.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(80)))), ((int)(((byte)(160)))), ((int)(((byte)(255)))));
             this.b1.ImageInterval = 0;
             this.b1.Location = new System.Drawing.Point(4, 4);
+            this.b1.MinimumSize = new System.Drawing.Size(1, 1);
             this.b1.Name = "b1";
             this.b1.Padding = new System.Windows.Forms.Padding(24, 0, 0, 0);
             this.b1.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
@@ -176,9 +181,9 @@ namespace Sunny.UI
             this.b1.Symbol = 61696;
             this.b1.TabIndex = 0;
             this.b1.Click += new System.EventHandler(this.b1_Click);
-            //
+            // 
             // TabControl
-            //
+            // 
             this.TabControl.Controls.Add(this.tabPage1);
             this.TabControl.Controls.Add(this.tabPage2);
             this.TabControl.Controls.Add(this.tabPage3);
@@ -194,9 +199,9 @@ namespace Sunny.UI
             this.TabControl.Style = Sunny.UI.UIStyle.Custom;
             this.TabControl.TabIndex = 1;
             this.TabControl.SelectedIndexChanged += new System.EventHandler(this.TabControl_SelectedIndexChanged);
-            //
+            // 
             // tabPage1
-            //
+            // 
             this.tabPage1.Controls.Add(this.p1);
             this.tabPage1.Location = new System.Drawing.Point(0, 40);
             this.tabPage1.Name = "tabPage1";
@@ -204,14 +209,15 @@ namespace Sunny.UI
             this.tabPage1.TabIndex = 0;
             this.tabPage1.Text = "tabPage1";
             this.tabPage1.UseVisualStyleBackColor = true;
-            //
+            // 
             // p1
-            //
+            // 
             this.p1.Dock = System.Windows.Forms.DockStyle.Fill;
             this.p1.FillColor = System.Drawing.Color.White;
             this.p1.Font = new System.Drawing.Font("微软雅黑", 12F);
             this.p1.Location = new System.Drawing.Point(0, 0);
             this.p1.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
+            this.p1.MinimumSize = new System.Drawing.Size(1, 1);
             this.p1.Name = "p1";
             this.p1.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
             this.p1.Size = new System.Drawing.Size(461, 277);
@@ -221,9 +227,9 @@ namespace Sunny.UI
             this.p1.PaintOther += new System.Windows.Forms.PaintEventHandler(this.p1_PaintOther);
             this.p1.MouseClick += new System.Windows.Forms.MouseEventHandler(this.p1_MouseClick);
             this.p1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.p1_MouseMove);
-            //
+            // 
             // tabPage2
-            //
+            // 
             this.tabPage2.Controls.Add(this.p2);
             this.tabPage2.Location = new System.Drawing.Point(0, 40);
             this.tabPage2.Name = "tabPage2";
@@ -231,14 +237,15 @@ namespace Sunny.UI
             this.tabPage2.TabIndex = 1;
             this.tabPage2.Text = "tabPage2";
             this.tabPage2.UseVisualStyleBackColor = true;
-            //
+            // 
             // p2
-            //
+            // 
             this.p2.Dock = System.Windows.Forms.DockStyle.Fill;
             this.p2.FillColor = System.Drawing.Color.White;
             this.p2.Font = new System.Drawing.Font("微软雅黑", 12F);
             this.p2.Location = new System.Drawing.Point(0, 0);
             this.p2.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
+            this.p2.MinimumSize = new System.Drawing.Size(1, 1);
             this.p2.Name = "p2";
             this.p2.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
             this.p2.Size = new System.Drawing.Size(450, 230);
@@ -248,9 +255,9 @@ namespace Sunny.UI
             this.p2.PaintOther += new System.Windows.Forms.PaintEventHandler(this.p2_PaintOther);
             this.p2.MouseClick += new System.Windows.Forms.MouseEventHandler(this.p2_MouseClick);
             this.p2.MouseMove += new System.Windows.Forms.MouseEventHandler(this.p2_MouseMove);
-            //
+            // 
             // tabPage3
-            //
+            // 
             this.tabPage3.Controls.Add(this.p3);
             this.tabPage3.Location = new System.Drawing.Point(0, 40);
             this.tabPage3.Name = "tabPage3";
@@ -258,14 +265,15 @@ namespace Sunny.UI
             this.tabPage3.TabIndex = 2;
             this.tabPage3.Text = "tabPage3";
             this.tabPage3.UseVisualStyleBackColor = true;
-            //
+            // 
             // p3
-            //
+            // 
             this.p3.Dock = System.Windows.Forms.DockStyle.Fill;
             this.p3.FillColor = System.Drawing.Color.White;
             this.p3.Font = new System.Drawing.Font("微软雅黑", 12F);
             this.p3.Location = new System.Drawing.Point(0, 0);
             this.p3.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
+            this.p3.MinimumSize = new System.Drawing.Size(1, 1);
             this.p3.Name = "p3";
             this.p3.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
             this.p3.Size = new System.Drawing.Size(461, 277);
@@ -275,9 +283,9 @@ namespace Sunny.UI
             this.p3.PaintOther += new System.Windows.Forms.PaintEventHandler(this.p3_PaintOther);
             this.p3.MouseClick += new System.Windows.Forms.MouseEventHandler(this.p3_MouseClick);
             this.p3.MouseMove += new System.Windows.Forms.MouseEventHandler(this.p3_MouseMove);
-            //
+            // 
             // UIDateItem
-            //
+            // 
             this.Controls.Add(this.TabControl);
             this.Controls.Add(this.TopPanel);
             this.FillColor = System.Drawing.Color.White;
@@ -290,6 +298,7 @@ namespace Sunny.UI
             this.tabPage2.ResumeLayout(false);
             this.tabPage3.ResumeLayout(false);
             this.ResumeLayout(false);
+
         }
 
         #endregion InitializeComponent
@@ -583,8 +592,8 @@ namespace Sunny.UI
 
         private void p1_MouseClick(object sender, System.Windows.Forms.MouseEventArgs e)
         {
-            int width = p2.Width / 4;
-            int height = p2.Height / 3;
+            int width = p1.Width / 4;
+            int height = p1.Height / 3;
             int x = e.Location.X / width;
             int y = e.Location.Y / height;
             int iy = x + y * 4;
diff --git a/SunnyUI/Controls/DropItem/UIDateItem.resx b/SunnyUI/Controls/DropItem/UIDateItem.resx
new file mode 100644
index 00000000..1af7de15
--- /dev/null
+++ b/SunnyUI/Controls/DropItem/UIDateItem.resx
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
\ No newline at end of file
diff --git a/SunnyUI/Controls/DropItem/UIDateTimeItem.cs b/SunnyUI/Controls/DropItem/UIDateTimeItem.cs
index 0576b028..8a7b1545 100644
--- a/SunnyUI/Controls/DropItem/UIDateTimeItem.cs
+++ b/SunnyUI/Controls/DropItem/UIDateTimeItem.cs
@@ -1132,8 +1132,8 @@ namespace Sunny.UI
 
         private void p1_MouseClick(object sender, System.Windows.Forms.MouseEventArgs e)
         {
-            int width = p2.Width / 4;
-            int height = p2.Height / 3;
+            int width = p1.Width / 4;
+            int height = p1.Height / 3;
             int x = e.Location.X / width;
             int y = e.Location.Y / height;
             int iy = x + y * 4;
diff --git a/SunnyUI/SunnyUI.csproj b/SunnyUI/SunnyUI.csproj
index b027c2ce..5514798b 100644
--- a/SunnyUI/SunnyUI.csproj
+++ b/SunnyUI/SunnyUI.csproj
@@ -543,6 +543,9 @@
     <EmbeddedResource Include="Controls\DropItem\UIComboTreeViewItem.resx">
       <DependentUpon>UIComboTreeViewItem.cs</DependentUpon>
     </EmbeddedResource>
+    <EmbeddedResource Include="Controls\DropItem\UIDateItem.resx">
+      <DependentUpon>UIDateItem.cs</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="Controls\UIComboTreeView.resx">
       <DependentUpon>UIComboTreeView.cs</DependentUpon>
     </EmbeddedResource>