add UniformSpacingPanel Demo

src/Shared/HandyControlDemo_Shared/Data/DemoInfo.json

@@ -1,4 +1,4 @@
-[
+[
   {
     "title": "Styles",
     "selectedIndex": -1,
@@ -79,6 +79,7 @@
       [ "CirclePanel", "CirclePanelDemoCtl", "ColorWheel_16x", "" ],
       [ "Grid", "GridDemoCtl", "GridPane_16x", "" ],
       [ "FlexPanel", "FlexPanelDemoCtl", "layout-FlexLayout-16", "1" ],
+      [ "UniformSpacingPanel", "UniformSpacingPanelDemoCtl", "IncreaseHorizontalSpacing_16x", "1" ],
       [ "RelativePanel", "RelativePanelDemoCtl", "TransformRelative_16x", "" ],
       [ "WaterfallPanel", "WaterfallPanelDemoCtl", "Panel_16x", "" ],
       [ "HoneycombPanel", "HoneycombPanelDemoCtl", "PolygonHexagon_16x", "" ],
@@ -105,7 +106,7 @@
       [ "Sprite", "SpriteDemoCtl", "HandyControl", "" ],
       [ "Notification", "NotificationDemoCtl", "Procedure_16x", "" ],
       [ "Dialog", "DialogDemoCtl", "Dialog_16x", "" ],
-      [ "Screenshot", "ScreenshotDemoCtl", "WindowScreenshot_16x", "1" ],
+      [ "Screenshot", "ScreenshotDemoCtl", "WindowScreenshot_16x", "" ],
       [ "Window", "WindowDemoCtl", "WindowsForm_16x", "" ]
     ]
   },
@@ -118,4 +119,4 @@
       [ "Effects", "EffectsDemoCtl", "Effects_16x", "" ]
     ]
   }
-]
+]