PIE-SDK For C++矢量数据编辑的撤销和回退

1.功能简介

   在数据的编辑过程中难免会出现失误，撤销和回退可以更好的编辑，下面对矢量数据编辑的撤销和回退功能进行介绍。

2.功能实现说明

2.1 实现思路及原理说明

第一步	调用UndoCommand和RedoCommand类进行创建

2.2 核心接口与方法

接口/类	方法/属性	说明
SysUI::CMDPluginModule::CreateLibCommand		实例化命令
SysUI::ICommandPtr	OnCreate()	命令创建
	OnClick()	点击事件

2.3 示例代码

项目路径	百度云盘地址下/PIE示例程序/04数据操作/06矢量数据编辑撤销和回退
数据路径	自定义即可
视频路径	百度云盘地址下/PIE视频教程/04数据操作/06矢量数据编辑撤销和回退.avi
示例代码
void PIEMainWindow::On_ActionStartEditor_Triggered(bool checked) {     if (SysCarto::Editor::Instance()->GetEditState() == SysCarto::EditState::StateNotEditing)     {         SysCarto::Editor::Instance()->StartEditing();         SysCarto::FeatureLayerPtr fLayerPtr = m_pCurrentControl->GetActiveView()->GetCurrentLayer();         if (fLayerPtr == nullptr) return;         SysCarto::Editor::Instance()->SetMap(m_pMapControl->GetMap());         SysCarto::Editor::Instance()->SetEditLayer(fLayerPtr);     } }   void PIEMainWindow::On_ActionStopEditor_Triggered(bool checked) {     if (SysCarto::Editor::Instance()->GetEditState() == SysCarto::EditState::StateEditing)     {         bool flag= SysCarto::Editor::Instance()->SaveEditing();         flag=SysCarto::Editor::Instance()->StopEditing(true);     } }   void PIEMainWindow::On_ActionAddFeature_Triggered(bool checked) {     SysCarto::FeatureLayerPtr fLyPtr = m_pCurrentControl->GetActiveView()->GetCurrentLayer();     if (fLyPtr == nullptr) return;       SysCarto::Editor::Instance()->StartEditOperation("添加元素");     SysDataSource::FeatureClassPtr featureclass = fLyPtr->GetFeatureClass();     SysDataSource::FeaturePtr newFeature = featureclass->CreateNewFeature();       SysGeometry::PolygonPtr polygon = new SysGeometry::Polygon();         SysGeometry::PointPtr pointPtr1 = new SysGeometry::Point();     pointPtr1->PutCoords(121.83, 36.01);     polygon->AddPoint(pointPtr1);       SysGeometry::PointPtr pointPtr2 = new SysGeometry::Point();     pointPtr2->PutCoords(126.44, 33.32);     polygon->AddPoint(pointPtr2);       SysGeometry::PointPtr pointPtr3 = new SysGeometry::Point();     pointPtr3->PutCoords(122.18, 33.59);     polygon->AddPoint(pointPtr3);       polygon->CloseRings();       SysGeometry::GeometryPtr geoPtr = polygon;     geoPtr->SetSpatialReference(featureclass->GetFeatureDataset()->GetSpatialReference());     newFeature->SetGeometry(geoPtr);       featureclass->AddFeature(newFeature);     bool flag= SysCarto::Editor::Instance()->StopEditOperation();     m_pCurrentControl->GetActiveView()->PartialRefresh(SysCarto::ViewAll); }   void PIEMainWindow::On_ActionUndo_Triggered(bool checked) {     SysUI::ICommandPtr ptrCmd = SysUI::CMDPluginModule::CreateLibCommand("VectorEditor", "VectorEditor_Undo");     if (ptrCmd == nullptr) return;     ptrCmd->OnCreate(m_pMapControl);     ptrCmd->OnClick(); }   void PIEMainWindow::On_ActionRedo_Triggered(bool checked) {     SysUI::ICommandPtr ptrCmd = SysUI::CMDPluginModule::CreateLibCommand("VectorEditor", "VectorEditor_Redo");     if (ptrCmd == nullptr) return;     ptrCmd->OnCreate(m_pMapControl);     ptrCmd->OnClick(); }

2.4 示例截图