这是哪种语言？

  <UIEvent Name="OnRClick" />
  </UIClass>
- <UIClass Name="BehaviorDesigner">
  <UIEvent Name="OnBehaviorStart" />
  <UIEvent Name="OnBehaviorTerminate" />
  </UIClass>
- <UIClass Name="ComboBox">
  <UIEvent Name="OnCBSelChanged" />
  <UIEvent Name="OnCBTextChanged" />
  <UIEvent Name="OnCBDropDown" />
  <UIEvent Name="OnCBSelectItem" />
  </UIClass>
- <UIClass Name="Container">
  <UIEvent Name="OnContainerCustomDraw" />
  </UIClass>
+ <UIClass Name="Dialog">
  <UIEvent Name="OnDialogClose" />
  <UIEvent Name="OnDialogMinPos" />
  </UIClass>
+ <UIClass Name="Edit">
  <UIEvent Name="OnEditTextChange" />
  <UIEvent Name="OnSCScrollStepChange" />
  <UIEvent Name="OnSCDocOffSetChange" />
  <UIEvent Name="OnSCDocChange" />
  </UIClass>
+ <UIClass Name="Header">
  <UIEvent Name="OnHeaderButtonDBClick" />
  <UIEvent Name="OnHeaderButtonDown" />
  <UIEvent Name="OnHeaderButtonUp" />
  <UIEvent Name="OnHeaderItemLenChange" />
  <UIEvent Name="OnHeaderMouseMove" />
  <UIEvent Name="OnHeaderButtonClick" />
  <UIEvent Name="OnHeaderContentResize" />
  </UIClass>
+ <UIClass Name="IconGrid">
  <UIEvent Name="OnIBLBtnDown" />
  <UIEvent Name="OnIBLBtnUp" />
  <UIEvent Name="OnIBRBtnDown" />
  <UIEvent Name="OnIBRBtnUp" />
  <UIEvent Name="OnIBDBClick" />
  <UIEvent Name="OnIBDragBegin" />
  <UIEvent Name="OnIBDragEnter" />
  <UIEvent Name="OnIBDragOver" />
  <UIEvent Name="OnIBDragLeave" />
  <UIEvent Name="OnIBDragDrop" />
  <UIEvent Name="OnIBDragCancel" />
  <UIEvent Name="OnIBDropTest" />
  <UIEvent Name="OnIBClick" />
  <UIEvent Name="OnIBRClick" />
  <UIEvent Name="OnIBShowToolTip" />
  </UIClass>
+ <UIClass Name="Iconbox">
  <UIEvent Name="OnIBClick" />
  <UIEvent Name="OnIBRClick" />
  </UIClass>
+ <UIClass Name="ListBox">
  <UIEvent Name="OnLBoxSelectItem" />
  <UIEvent Name="OnLBoxRClickItem" />
  </UIClass>
+ <UIClass Name="Menu">
  <UIEvent Name="OnMenuClickItem" />
  </UIClass>
+ <UIClass Name="MultiImageVermin">
  <UIEvent Name="OnMultiImageVerminAnimate" />
  </UIClass>
+ <UIClass Name="RichEdit">
  <UIEvent Name="OnREClickHyperLink" />
  <UIEvent Name="OnREDBClickHyperLink" />
  <UIEvent Name="OnRERClickHyperLink" />
  <UIEvent Name="OnREAutoDeleteHyperLink" />
  <UIEvent Name="OnREScrollFinish" />
  <UIEvent Name="OnREOneByOneShowFinish" />
  <UIEvent Name="OnREOffsetChange" />
  </UIClass>
+ <UIClass Name="ScrollBar">
  <UIEvent Name="OnSBMouseLease" />
  <UIEvent Name="OnSBThumbPosChange" />
  </UIClass>
+ <UIClass Name="ScrollView">
  <UIEvent Name="OnSVGetScrollStep" />
  <UIEvent Name="OnSVClientChange" />
  <UIEvent Name="OnSVScrollBarDisappear" />
  </UIClass>
+ <UIClass Name="Slider">
  <UIEvent Name="OnSliderThumbPosChange" />
  </UIClass>
+ <UIClass Name="Table">
  <UIEvent Name="OnTableLButtonDown" />
  <UIEvent Name="OnTableItemDBClick" />
  <UIEvent Name="OnTableRButtonDown" />
  <UIEvent Name="OnTableRButtonUp" />
  <UIEvent Name="OnTableItemClick" />
  <UIEvent Name="OnTableItemRClick" />
  <UIEvent Name="OnTableRowHeightChange" />
  <UIEvent Name="OnTableSetLine" />
  <UIEvent Name="OnTableSetItemMaxWidth" />
  <UIEvent Name="OnTableDocChange" />
  <UIEvent Name="OnTableGetScrollInfo" />
  </UIClass>
+ <UIClass Name="ToolTip">
  <UIEvent Name="OnToolTipAutoMoved" />
  </UIClass>
+ <UIClass Name="Tree">
  <UIEvent Name="OnTreeSelectItem" />
  <UIEvent Name="OnTreeClickItem" />
  <UIEvent Name="OnTreeDBClickItem" />
  <UIEvent Name="OnTreeRBDownItem" />
  <UIEvent Name="OnTreeRClickItem" />
  <UIEvent Name="OnTreeExpandItem" />
  <UIEvent Name="OnTreeCollapseItem" />
  <UIEvent Name="OnSCScrollStepChange" />
  <UIEvent Name="OnSCDocOffSetChange" />
  <UIEvent Name="OnSCDocChange" />
  </UIClass>
+ <UIClass Name="Win32Tree">
  <UIEvent Name="OnTreeSelectItem" />
  <UIEvent Name="OnTreeDBClickItem" />
  <UIEvent Name="OnTreeRClickItem" />
  <UIEvent Name="OnTreeExpandItem" />
  <UIEvent Name="OnTreeCollapseItem" />
  </UIClass>
+ <UIClass Name="UserObject">
  <UIEvent Name="OnRestoreSuccess" />
  </UIClass>