button 添加'是否启用双击事件'属性，解决连续点击效率问题

SunnyUI.Demo/Controls/FListBox.Designer.cs

@@ -119,6 +119,7 @@
             this.uiButton1.TabIndex = 23;
             this.uiButton1.Text = "Add Item";
             this.uiButton1.Click += new System.EventHandler(this.uiButton1_Click);
+            this.uiButton1.DoubleClick += new System.EventHandler(this.uiButton1_DoubleClick);
             // 
             // FListBox
             // 

SunnyUI.Demo/Controls/FListBox.cs

@@ -49,5 +49,11 @@ namespace Sunny.UI.Demo
             uiListBox1.Items.Add(DateTime.Now.ToString("yyyyMMdd") + "_" + num);
             num++;
         }
+
+        private void uiButton1_DoubleClick(object sender, EventArgs e)
+        {
+            uiListBox1.Items.Add(DateTime.Now.ToString("yyyyMMdd") + "_double_" + num);
+            num++;
+        }
     }
 }

SunnyUI/Controls/UIButton.cs

@@ -55,6 +55,7 @@ namespace Sunny.UI
             fillHoverColor = UIStyles.Blue.ButtonFillHoverColor;
             fillPressColor = UIStyles.Blue.ButtonFillPressColor;
             fillSelectedColor = UIStyles.Blue.ButtonFillSelectedColor;
+            SetStyle(ControlStyles.StandardDoubleClick, UseDoubleClick);
         }
 
         private bool isClick;
@@ -76,6 +77,27 @@ namespace Sunny.UI
             base.OnClick(e);
         }
 
+        private bool useDoubleClick = false;
+
+        [Description("是否启用双击事件"), Category("SunnyUI")]
+        [DefaultValue(false)]
+        public bool UseDoubleClick
+        {
+            get
+            {
+                return useDoubleClick;
+            }
+            set
+            {
+                if (useDoubleClick != value)
+                {
+                    useDoubleClick = value;
+                    SetStyle(ControlStyles.StandardDoubleClick, value);
+                    Invalidate();
+                }
+            }
+        }
+
         private bool showTips = false;
 
         [Description("是否显示角标"), Category("SunnyUI")]