在axtoolbar中插入删除要素功能

最新推荐文章于 2021-03-16 13:49:57 发布

原创最新推荐文章于 2021-03-16 13:49:57 发布 · 990 阅读

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#null #exception #hook #command #initialization #string

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本文介绍了一个在ArcGIS环境中实现删除地图要素的命令组件。该命令通过COM注册并在ArcMap、Map Control及Page Layout Control中工作。文章详细展示了如何通过C#实现此功能，包括初始化、响应点击事件及要素删除的具体实现。

namespace DXGXGIS.MainGIS { /// <summary> /// Command that works in ArcMap/Map/PageLayout /// </summary> [Guid("c675fa40-76a8-4705-a1bc-32c0d6d484ec")] [ClassInterface(ClassInterfaceType.None)] [ProgId("DXGXGIS.MainGIS.deleteFeature")] public sealed class deleteFeature : BaseCommand { #region COM Registration Function(s) [ComRegisterFunction()] [ComVisible(false)] static void RegisterFunction(Type registerType) { // Required for ArcGIS Component Category Registrar support ArcGISCategoryRegistration(registerType); // // TODO: Add any COM registration code here // } [ComUnregisterFunction()] [ComVisible(false)] static void UnregisterFunction(Type registerType) { // Required for ArcGIS Component Category Registrar support ArcGISCategoryUnregistration(registerType); // // TODO: Add any COM unregistration code here // } #region ArcGIS Component Category Registrar generated code /// <summary> /// Required method for ArcGIS Component Category registration - /// Do not modify the contents of this method with the code editor. /// </summary> private static void ArcGISCategoryRegistration(Type registerType) { string regKey = string.Format("HKEY_CLASSES_ROOT//CLSID//{{{0}}}", registerType.GUID); MxCommands.Register(regKey); ControlsCommands.Register(regKey); } /// <summary> /// Required method for ArcGIS Component Category unregistration - /// Do not modify the contents of this method with the code editor. /// </summary> private static void ArcGISCategoryUnregistration(Type registerType) { string regKey = string.Format("HKEY_CLASSES_ROOT//CLSID//{{{0}}}", registerType.GUID); MxCommands.Unregister(regKey); ControlsCommands.Unregister(regKey); } #endregion #endregion private IHookHelper m_hookHelper = null; public deleteFeature() { // // TODO: Define values for the public properties // //base.m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream(GetType(), "036.ico")); base.m_category = ""; //localizable text base.m_caption = "删除"; //localizable text base.m_message = "This should work in ArcMap/MapControl/PageLayoutControl"; //localizable text base.m_toolTip = "删除"; //localizable text base.m_name = "删除"; //unique id, non-localizable (e.g. "MyCategory_MyCommand") try { // // TODO: change bitmap name if necessary // string bitmapResourceName = GetType().Name + ".bmp"; base.m_bitmap = new Bitmap(GetType(), bitmapResourceName); } catch (Exception ex) { System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap"); } } #region Overriden Class Methods /// <summary> /// Occurs when this command is created /// </summary> /// <param name="hook">Instance of the application</param> public override void OnCreate(object hook) { if (hook == null) return; try { m_hookHelper = new HookHelperClass(); m_hookHelper.Hook = hook; if (m_hookHelper.ActiveView == null) m_hookHelper = null; } catch { m_hookHelper = null; } if (m_hookHelper == null) base.m_enabled = false; else base.m_enabled = true; // TODO: Add other initialization code } /// <summary> /// Occurs when this command is clicked /// </summary> public override void OnClick() { try { ISelection pSelection = m_hookHelper.ActiveView.FocusMap.FeatureSelection; IEnumFeature pEnumFeature = pSelection as IEnumFeature; IEnumFeatureSetup m_EnumFeatureSetup = pEnumFeature as IEnumFeatureSetup; m_EnumFeatureSetup.AllFields = true; pEnumFeature.Reset(); IFeature pFeature = pEnumFeature.Next(); pFeature.Delete(); m_hookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null); m_hookHelper.ActiveView.Refresh(); } catch (Exception ee) { } } #endregion } }