form04.frm

给出了详细的vb环境下mo基本功能的代码 如图层的加载

VERSION 5.00
Object = "{9BD6A640-CE75-11D1-AF04-204C4F4F5020}#2.0#0"; "mo20.ocx"
Begin VB.Form Form04 
   Caption         =   "墨西哥地图-放大、移动和缩小"
   ClientHeight    =   5190
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   6540
   LinkTopic       =   "Form1"
   ScaleHeight     =   5190
   ScaleWidth      =   6540
   StartUpPosition =   2  '屏幕中心
   Begin VB.CommandButton Command1 
      Caption         =   "缩小"
      Height          =   495
      Left            =   2760
      TabIndex        =   0
      Top             =   4560
      Width           =   1215
   End
   Begin MapObjects2.Map Map1 
      Height          =   4215
      Left            =   360
      TabIndex        =   1
      Top             =   120
      Width           =   5775
      _Version        =   131072
      _ExtentX        =   10186
      _ExtentY        =   7435
      _StockProps     =   225
      BackColor       =   16777215
      BorderStyle     =   1
      Contents        =   "Form04.frx":0000
   End
End
Attribute VB_Name = "Form04"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'Xue Wei,2003/4/30
'实现按右键移动、左键放大；
'按“缩小”按钮缩小地图50%。

Option Explicit

Private Sub Command1_Click()
  Dim p As MapObjects2.Point
  Dim recs As MapObjects2.Recordset
  Dim r As MapObjects2.Rectangle
  Set r = Map1.Extent
  r.ScaleRectangle 1.5
  Map1.Extent = r
End Sub

Private Sub Map1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
  If Button = vbLeftButton Then
    Set Map1.Extent = Map1.TrackRectangle
  ElseIf Button = vbRightButton Then
    Map1.Pan
  End If
End Sub