About the Custom map selection commands Sample
[C#]
SelectFeatures.cs
using System;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.esriSystem;
namespace SelectCommands
{
[ClassInterface(ClassInterfaceType.None)]
[Guid("3362ba66-bf63-442a-a639-d18d583a028d")]
public sealed class SelectFeatures : BaseTool
{
#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);
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);
ControlsCommands.Unregister(regKey);
}
#endregion
#endregion
private IHookHelper m_hookHelper;
private System.Windows.Forms.Cursor m_CursorMove;
public SelectFeatures()
{
//Create an IHookHelper object
m_hookHelper = new HookHelperClass();
//Set the tool properties
base.m_caption = "Select Features";
base.m_category = "Sample_Select(C#)";
base.m_name = "Sample_Select(C#)_Select Features";
base.m_message = "Selects Features By Rectangle Or Single Click";
base.m_toolTip = "Selects Features";
base.m_deactivate = true;
base.m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream(GetType(), "SelectFeatures.bmp"));
m_CursorMove = new System.Windows.Forms.Cursor(GetType().Assembly.GetManifestResourceStream(GetType(), "SelectFeatures.cur"));
}
public override void OnCreate(object hook)
{
m_hookHelper.Hook = hook;
}
public override bool Enabled
{
get
{
if (m_hookHelper.FocusMap == null) return false;
return (m_hookHelper.FocusMap.LayerCount > 0);
}
}
public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
IMap map;
IPoint clickedPoint = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
//If ActiveView is a PageLayout
if (m_hookHelper.ActiveView is IPageLayout)
{
//See whether the mouse has been clicked over a Map in the PageLayout
map = m_hookHelper.ActiveView.HitTestMap(clickedPoint);
//If mouse click isn't over a Map exit
if (map == null)
return;
//Ensure the Map is the FocusMap
if ((!object.ReferenceEquals(map, m_hookHelper.FocusMap)))
{
m_hookHelper.ActiveView.FocusMap = map;
m_hookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}
//Still need to convert the clickedPoint into map units using the map's IActiveView
clickedPoint = ((IActiveView)map).ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
}
else //Or ActiveView is a Map
{
map = m_hookHelper.FocusMap;
}
IActiveView activeView = (IActiveView)map;
IRubberBand rubberEnv = new RubberEnvelopeClass();
IGeometry geom = rubberEnv.TrackNew(activeView.ScreenDisplay, null);
IArea area = (IArea)geom;
//Extra logic to cater for the situation where the user simply clicks a point on the map
//or where envelope is so small area is zero
if ((geom.IsEmpty == true) || (area.Area == 0))
{
//create a new envelope
IEnvelope tempEnv = new EnvelopeClass();
//create a small rectangle
ESRI.ArcGIS.esriSystem.tagRECT RECT = new tagRECT();
RECT.bottom = 0;
RECT.left = 0;
RECT.right = 5;
RECT.top = 5;
//transform rectangle into map units and apply to the tempEnv envelope
IDisplayTransformation dispTrans = activeView.ScreenDisplay.DisplayTransformation;
dispTrans.TransformRect(tempEnv,ref RECT, 4); //4 = esriDisplayTransformationEnum.esriTransformToMap)
tempEnv.CenterAt(clickedPoint);
geom = (IGeometry)tempEnv;
}
//Set the spatial reference of the search geometry to that of the Map
ISpatialReference spatialReference = map.SpatialReference;
geom.SpatialReference = spatialReference;
map.SelectByShape(geom, null, false);
activeView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, activeView.Extent);
}
public override int Cursor
{
get
{
return m_CursorMove.Handle.ToInt32();
}
}
}
}
[Visual Basic .NET]
SelectFeatures.vb
Option Explicit On
Imports ESRI.ArcGIS.Carto
Imports ESRI.ArcGIS.Display
Imports ESRI.ArcGIS.Geometry
Imports ESRI.ArcGIS.Controls
Imports ESRI.ArcGIS.ADF.BaseClasses
Imports ESRI.ArcGIS.ADF.CATIDs
Imports System.Runtime.InteropServices
Imports ESRI.ArcGIS.esriSystem
<ComClass(SelectFeatures.ClassId, SelectFeatures.InterfaceId, SelectFeatures.EventsId)> _
Public NotInheritable Class SelectFeatures
Inherits BaseTool
Private m_pHookHelper As IHookHelper
Private m_pCursorMove As System.Windows.Forms.Cursor
#Region "COM GUIDs"
'These GUIDs provide the COM identity for this class and its COM interfaces.
'If you change them, existing clients will no longer be able to access the class.
Public Const ClassId As String = "310bd6df-9422-44c0-9158-f8e63aa4254e"
Public Const InterfaceId As String = "8cca1681-2c5c-4c06-9760-fd9f3ca70908"
Public Const EventsId As String = "ab0d2a64-3473-477b-a28d-93dc5e3820cc"
#End Region
#Region "COM Registration Function(s)"
<ComRegisterFunction(), ComVisibleAttribute(False)> _
Public Shared Sub RegisterFunction(ByVal registerType As Type)
' Required for ArcGIS Component Category Registrar support
ArcGISCategoryRegistration(registerType)
'Add any COM registration code after the ArcGISCategoryRegistration() call
End Sub
<ComUnregisterFunction(), ComVisibleAttribute(False)> _
Public Shared Sub UnregisterFunction(ByVal registerType As Type)
' Required for ArcGIS Component Category Registrar support
ArcGISCategoryUnregistration(registerType)
'Add any COM unregistration code after the ArcGISCategoryUnregistration() call
End Sub
#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 Shared Sub ArcGISCategoryRegistration(ByVal registerType As Type)
Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
ControlsCommands.Register(regKey)
End Sub
''' <summary>
''' Required method for ArcGIS Component Category unregistration -
''' Do not modify the contents of this method with the code editor.
''' </summary>
Private Shared Sub ArcGISCategoryUnregistration(ByVal registerType As Type)
Dim regKey As String = String.Format("HKEY_CLASSES_ROOT\CLSID\{{{0}}}", registerType.GUID)
ControlsCommands.Unregister(regKey)
End Sub
#End Region
#End Region
Public Sub New()
MyBase.New()
'Create an IHookHelper object
m_pHookHelper = New HookHelperClass
'Set the tool properties
MyBase.m_caption = "Select Features"
MyBase.m_category = "Sample_Select(VB.NET)"
MyBase.m_name = "Sample_Select(VB.NET)_Select Features"
MyBase.m_message = "Selects Features By Rectangle Or Single Click"
MyBase.m_toolTip = "Selects Features"
MyBase.m_deactivate = True
MyBase.m_bitmap = New System.Drawing.Bitmap(GetType(SelectFeatures).Assembly.GetManifestResourceStream(GetType(SelectFeatures), "SelectFeatures.bmp"))
m_pCursorMove = New System.Windows.Forms.Cursor(GetType(SelectFeatures).Assembly.GetManifestResourceStream(GetType(SelectFeatures), "SelectFeatures.cur"))
End Sub
Public Overrides Sub OnCreate(ByVal hook As Object)
m_pHookHelper.Hook = hook
End Sub
Public Overrides ReadOnly Property Enabled() As Boolean
Get
If (m_pHookHelper.FocusMap Is Nothing) Then Exit Property
Return (m_pHookHelper.FocusMap.LayerCount > 0)
End Get
End Property
Public Overrides Sub OnMouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Integer, ByVal Y As Integer)
Dim map As IMap
Dim clickedPoint As IPoint = m_pHookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y)
'If ActiveView is a PageLayout
If TypeOf m_pHookHelper.ActiveView Is IPageLayout Then
'See whether the mouse has been clicked over a Map in the PageLayout
map = m_pHookHelper.ActiveView.HitTestMap(clickedPoint)
'If mouse click isn't over a Map exit
If map Is Nothing Then Exit Sub
'Ensure the Map is the FocusMap
If Not map Is m_pHookHelper.FocusMap Then
m_pHookHelper.ActiveView.FocusMap = map
End If
'Still need to convert the clickedPoint into map units using the map's IActiveView
clickedPoint = CType(map, IActiveView).ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y)
Else 'Or ActiveView is a Map
map = m_pHookHelper.FocusMap
End If
Dim activeView As IActiveView = CType(map, IActiveView)
Dim rubberEnv As IRubberBand = New RubberEnvelopeClass()
Dim geom As IGeometry = rubberEnv.TrackNew(activeView.ScreenDisplay, Nothing)
Dim area As IArea = CType(geom, IArea)
'Extra logic to cater for the situation where the user simply clicks a point on the map
'or where envelope is so small area is zero
If (geom.IsEmpty = True) OrElse (area.Area = 0) Then
'create a new envelope
Dim tempEnv As IEnvelope = New EnvelopeClass()
'create a small rectangle
Dim RECT As ESRI.ArcGIS.esriSystem.tagRECT = New tagRECT()
RECT.bottom = 0
RECT.left = 0
RECT.right = 5
RECT.top = 5
'transform rectangle into map units and apply to the tempEnv envelope
Dim dispTrans As IDisplayTransformation = activeView.ScreenDisplay.DisplayTransformation
dispTrans.TransformRect(tempEnv, RECT, 4) 'esriDisplayTransformationEnum.esriTransformToMap);
tempEnv.CenterAt(clickedPoint)
geom = CType(tempEnv, IGeometry)
End If
'Set the spatial reference of the search geometry to that of the Map
Dim spatialReference As ISpatialReference = map.SpatialReference
geom.SpatialReference = spatialReference
map.SelectByShape(geom, Nothing, False)
activeView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, Nothing, activeView.Extent)
End Sub
Public Overrides ReadOnly Property Cursor() As Integer
Get
Return m_pCursorMove.Handle.ToInt32
End Get
End Property
End Class