form01.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 Form01 
   Caption         =   "墨西哥地图"
   ClientHeight    =   5070
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   6705
   LinkTopic       =   "Form2"
   ScaleHeight     =   5070
   ScaleWidth      =   6705
   StartUpPosition =   2  '屏幕中心
   Begin MapObjects2.Map Map1 
      Height          =   4815
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   6495
      _Version        =   131072
      _ExtentX        =   11456
      _ExtentY        =   8493
      _StockProps     =   225
      BackColor       =   16777215
      BorderStyle     =   1
      Contents        =   "Form01.frx":0000
   End
End
Attribute VB_Name = "Form01"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'Xuewei,，2003/4/17
'DrawText简单演示；

Option Explicit

Dim TextSym As New MapObjects2.TextSymbol
Dim P1 As MapObjects2.Point

Private Sub Map1_AfterLayerDraw(ByVal Index As Integer, ByVal canceled As Boolean, ByVal hDC As stdole.OLE_HANDLE)
  If Not P1 Is Nothing Then
    Map1.DrawText "MapObjects 演示", P1, TextSym
  End If
End Sub

Private Sub Map1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
  Set P1 = Map1.ToMapPoint(X, Y)
  Map1.Refresh
End Sub

Private Sub DrawLayer()
  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
End Sub

Private Sub Form_Load()
  TextSym.Color = moBrown
  TextSym.Font.Size = 20
  DrawLayer
End Sub