About the Custom map navigation commands Sample
[C#]
FixedZoomOut.cs
using System;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.SystemUI;
using ESRI.ArcGIS.ADF.CATIDs;
using System.Runtime.InteropServices;
namespace PanZoom
{
[ClassInterface(ClassInterfaceType.None)]
[Guid("B50CB8E7-1CD0-41d3-8C89-4CD8969E802F")]
public class FixedZoomOut : ICommand
{
#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
[DllImport("gdi32.dll")]
static extern bool DeleteObject(IntPtr hObject);
private bool m_enabled;
private System.Drawing.Bitmap m_bitmap;
private IntPtr m_hBitmap;
private IHookHelper m_pHookHelper;
public FixedZoomOut()
{
string[] res = GetType().Assembly.GetManifestResourceNames();
if(res.GetLength(0) > 0)
{
m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream(GetType(), "zoomoutfxd.bmp"));
if(m_bitmap != null)
{
m_bitmap.MakeTransparent(m_bitmap.GetPixel(1,1));
m_hBitmap = m_bitmap.GetHbitmap();
}
}
m_pHookHelper = new HookHelperClass ();
}
~FixedZoomOut()
{
if(m_hBitmap.ToInt32() != 0)
DeleteObject(m_hBitmap);
}
#region ICommand Members
public void OnClick()
{
//Get IActiveView interface
IActiveView pActiveView = (IActiveView) m_pHookHelper.FocusMap;
//Get IEnvelope interface
IEnvelope pEnvelope = (IEnvelope) pActiveView.Extent;
//Expand envelope and refresh the view
pEnvelope.Expand (1.25, 1.25, true);
pActiveView.Extent = pEnvelope;
pActiveView.Refresh();
}
public string Message
{
get
{
return "Zoom out from the center of the map";
}
}
public int Bitmap
{
get
{
return m_hBitmap.ToInt32();
}
}
public void OnCreate(object hook)
{
m_pHookHelper.Hook = hook;
m_enabled = true;
}
public string Caption
{
get
{
return "Fixed Zoom Out";
}
}
public string Tooltip
{
get
{
return "Fixed Zoom Out";
}
}
public int HelpContextID
{
get
{
// TODO: Add FixedZoomOut.HelpContextID getter implementation
return 0;
}
}
public string Name
{
get
{
return "Sample_Pan/FixedZoomOut";
}
}
public bool Checked
{
get
{
return false;
}
}
public bool Enabled
{
get
{
return m_enabled;
}
}
public string HelpFile
{
get
{
// TODO: Add FixedZoomOut.HelpFile getter implementation
return null;
}
}
public string Category
{
get
{
return "Sample_Pan/Zoom";
}
}
#endregion
}
}
[Visual Basic .NET]
FixedZoomOut.vb
Imports ESRI.ArcGIS.Carto
Imports ESRI.ArcGIS.GeomeTry
Imports ESRI.ArcGIS.Controls
Imports ESRI.ArcGIS.ADF.BaseClasses
Imports ESRI.ArcGIS.ADF.CATIDs
Imports System.Runtime.InteropServices
<ComClass(FixedZoomOut.ClassId, FixedZoomOut.InterfaceId, FixedZoomOut.EventsId)> _
Public NotInheritable Class FixedZoomOut
Inherits BaseCommand
#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 = "76ED0B2E-C247-4D84-8F58-6D468C3805D5"
Public Const InterfaceId As String = "3C5C4F2E-3549-42DF-9694-07207885DBE5"
Public Const EventsId As String = "9B88D46C-C404-422B-B3AB-DA04AD296E4A"
#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
Private m_pEnabled As Boolean
Private m_pHookHelper As IHookHelper
' A creatable COM class must have a Public Sub New()
' with no parameters, otherwise, the class will not be
' registered in the COM registry and cannot be created
' via CreateObject.
Public Sub New()
MyBase.New()
MyBase.m_category = "Sample_Pan_VBNET/Zoom"
MyBase.m_caption = "Fixed Zoom Out"
MyBase.m_message = "Zoom out from the center of the map"
MyBase.m_toolTip = "Fixed Zoom Out"
MyBase.m_name = "Sample_Pan/FixedZoomOut"
Dim res() As String = GetType(FixedZoomOut).Assembly.GetManifestResourceNames()
If res.GetLength(0) > 0 Then
MyBase.m_bitmap = New System.Drawing.Bitmap(GetType(FixedZoomOut).Assembly.GetManifestResourceStream("PanZoomVBNET.zoomoutfxd.bmp"))
End If
m_pHookHelper = New HookHelperClass
End Sub
Public Overrides Sub OnClick()
'Get IActiveView interface
Dim pActiveView As IActiveView = CType(m_pHookHelper.FocusMap, IActiveView)
'Get IEnvelope interface
Dim pEnvelope As IEnvelope = CType(pActiveView.Extent, IEnvelope)
'Expand envelope and refresh the view
pEnvelope.Expand(1.25, 1.25, True)
pActiveView.Extent = pEnvelope
pActiveView.Refresh()
End Sub
Public Overrides Sub OnCreate(ByVal hook As Object)
m_pHookHelper.Hook = hook
m_pEnabled = True
End Sub
Public Overrides ReadOnly Property Enabled() As Boolean
Get
Return m_pEnabled
End Get
End Property
End Class