viewentirelayers.frm

MapX控件与VB的二次开发。主要功能由TAB文件的新建

VERSION 5.00
Begin VB.Form viewentirelayers 
   Caption         =   "Form1"
   ClientHeight    =   1935
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   3810
   LinkTopic       =   "Form1"
   ScaleHeight     =   1935
   ScaleWidth      =   3810
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton OKButton 
      Caption         =   "OK"
      Default         =   -1  'True
      Height          =   375
      Left            =   720
      TabIndex        =   2
      Top             =   1200
      Width           =   1215
   End
   Begin VB.CommandButton CancelButton 
      Cancel          =   -1  'True
      Caption         =   "Cancel"
      Height          =   375
      Left            =   2040
      TabIndex        =   1
      Top             =   1200
      Width           =   1215
   End
   Begin VB.ComboBox LayerCombo 
      Height          =   300
      Left            =   360
      Style           =   2  'Dropdown List
      TabIndex        =   0
      Top             =   600
      Width           =   3135
   End
   Begin VB.Label Label1 
      Caption         =   "View Entire Layer:"
      Height          =   255
      Left            =   360
      TabIndex        =   3
      Top             =   240
      Width           =   1695
   End
End
Attribute VB_Name = "viewentirelayers"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

' This sample application and corresponding sample code is provided
' for example purposes only.  It has not undergone rigorous testing
' and as such should not be shipped as part of a final application
' without extensive testing on the part of the organization releasing
' the end-user product.

Private Sub CancelButton_Click()
    Unload Me
End Sub

Private Sub Form_Load()
    Dim lyr As MapXLib.Layer
    For Each lyr In MapBrower.Map1.Layers
        LayerCombo.AddItem lyr.Name
    Next
    LayerCombo.AddItem "All Layers"
    LayerCombo.ListIndex = 1
End Sub

Private Sub OKButton_Click()
    ' Since layer bounds are expressed in the NumericCoordSys and
    ' map bounds are expressed in the DisplayCoordSys, we make the
    ' coordinate systems identical here. If we didn't, the new view
    ' would be incorrect
    Set MapBrower.Map1.NumericCoordSys = MapBrower.Map1.DisplayCoordSys
    
    If LayerCombo.Text = "All Layers" Then
        Set MapBrower.Map1.Bounds = MapBrower.Map1.Layers.Bounds
    Else
        Dim LayerName As String
        LayerName = LayerCombo.Text
        Set MapBrower.Map1.Bounds = MapBrower.Map1.Layers(LayerName).Bounds
    End If
    Unload Me
End Sub