form1.frm

地理信息系统工程案例精选程序,本书所有案例均需要单独配置

VERSION 5.00
Object = "{9BD6A640-CE75-11D1-AF04-204C4F4F5020}#2.0#0"; "mo20.ocx"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   4485
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   7380
   LinkTopic       =   "Form1"
   ScaleHeight     =   4485
   ScaleWidth      =   7380
   StartUpPosition =   3  '窗口缺省
   Begin MapObjects2.Map Map1 
      Height          =   4215
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   7215
      _Version        =   131072
      _ExtentX        =   12726
      _ExtentY        =   7435
      _StockProps     =   225
      BackColor       =   16777215
      BorderStyle     =   1
      Contents        =   "Form1.frx":0000
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Form_Load()
    '建立ChartRendererX对象
    Dim ChartRendererX As New MapObjects2.ChartRenderer
    '建立数据连接
    Dim DataConnX As New MapObjects2.DataConnection
    Dim LayerX As New MapObjects2.MapLayer
    '读入shape图层，这里是
    'C:\Program Files\ESRI\MapObjects2\Samples\Data\USA\States.shp
    DataConnX.Database = "C:\Program Files\ESRI\MapObjects2\Samples\Data\USA"
    Set LayerX.GeoDataset = DataConnX.FindGeoDataset("States")
    '设置图层颜色
    LayerX.Symbol.Color = moGreen
    '将图层添加到Map Control中
    Map1.Layers.Add LayerX
    '设置ChartRendererX的属性
    With ChartRendererX
        .ChartType = moBar
        .BarHeight = 60
        .BarWidth = 20
        '需要比较的字段为3
        .FieldCount = 3
        '每个字段的值
        .Field(0) = "nevermarry"
        .Field(1) = "divorced"
        .Field(2) = "married"
        '每个字段的颜色
        .Color(0) = moRed
        .Color(1) = moWhite
        .Color(2) = moBlue
        '显示外框
        .ShowOutline = True
        '设置决定Chart大小的字段
        .SizeField = "pop1990"
    End With
    '将ChartRenderer赋值给MapLayer以使其发挥作用
    Set LayerX.Renderer = ChartRendererX
    '刷新Map Control
    Map1.Refresh
End Sub