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"
Object = "{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0"; "mscomctl.ocx"
Begin VB.Form Form04 
   Caption         =   "墨西哥地图"
   ClientHeight    =   6645
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   6630
   LinkTopic       =   "Form1"
   ScaleHeight     =   6645
   ScaleWidth      =   6630
   StartUpPosition =   2  '屏幕中心
   Begin MSComctlLib.ListView ListView1 
      Height          =   1335
      Left            =   1440
      TabIndex        =   1
      Top             =   5040
      Width           =   3495
      _ExtentX        =   6165
      _ExtentY        =   2355
      View            =   3
      LabelWrap       =   -1  'True
      HideSelection   =   -1  'True
      _Version        =   393217
      ForeColor       =   -2147483640
      BackColor       =   -2147483643
      BorderStyle     =   1
      Appearance      =   1
      NumItems        =   0
   End
   Begin MapObjects2.Map Map1 
      Height          =   4575
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   6375
      _Version        =   131072
      _ExtentX        =   11245
      _ExtentY        =   8070
      _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,2003/5/13
'用ListView添加属性窗口；

Option Explicit

Private Sub Map1_MouseDown(Button As Integer, Shift As Integer, x As Single, y As Single)
  Dim ly1 As MapObjects2.MapLayer
  Dim fld As MapObjects2.Field
  Dim newItem As Object
  Dim p As MapObjects2.Point
  Dim Recs As MapObjects2.Recordset
  
  Set ly1 = Map1.Layers("States")
  Set p = Map1.ToMapPoint(x, y)
  Set Recs = ly1.SearchShape(p, moPointInPolygon, "")
  If Not Recs.EOF Then
    ListView1.ListItems.Clear
    For Each fld In Recs.Fields  ' iterate over the fields
      Set newItem = ListView1.ListItems.Add
      newItem.Text = fld.Name
      newItem.SubItems(1) = fld.ValueAsString  ' get the value
    Next fld
  End If
End Sub

Private Sub Form_Load()
  Dim col As Object
  
  Dim dc As New DataConnection
  Dim layer As MapLayer
  dc.Database = App.Path + "\..\" + "Mexico"
  If Not dc.Connect Then
    MsgBox "在指定的文件夹下没找到图层数据文件！"
    End
  End If
  Set layer = New MapLayer
  Set layer.GeoDataset = dc.FindGeoDataset("States")
  layer.Symbol.Color = moYellow
  Map1.Layers.Add layer
  Set layer = New MapLayer
  Set layer.GeoDataset = dc.FindGeoDataset("Rivers")
  layer.Symbol.Color = moRed
  Map1.Layers.Add layer
  Map1.Refresh
  
  Set col = ListView1.ColumnHeaders.Add()
  col.Text = "属性名称"
  Set col = ListView1.ColumnHeaders.Add()
  col.Text = "属性值"
 
End Sub