frm_see.frm

vb+mo而次开发实现鹰眼功能

VERSION 5.00
Object = "{831FDD16-0C5C-11D2-A9FC-0000F8754DA1}#2.0#0"; "Mscomctl.ocx"
Object = "{9BD6A640-CE75-11D1-AF04-204C4F4F5020}#2.0#0"; "Mo20.ocx"
Begin VB.Form frm_see 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "鸟瞰视图"
   ClientHeight    =   5340
   ClientLeft      =   45
   ClientTop       =   435
   ClientWidth     =   6870
   Icon            =   "frm_see.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   5340
   ScaleWidth      =   6870
   StartUpPosition =   3  '窗口缺省
   Begin MSComctlLib.ImageList ImageList1 
      Left            =   4680
      Top             =   720
      _ExtentX        =   1005
      _ExtentY        =   1005
      BackColor       =   -2147483643
      ImageWidth      =   16
      ImageHeight     =   16
      MaskColor       =   12632256
      _Version        =   393216
      BeginProperty Images {2C247F25-8591-11D1-B16A-00C0F0283628} 
         NumListImages   =   5
         BeginProperty ListImage1 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "frm_see.frx":0442
            Key             =   ""
         EndProperty
         BeginProperty ListImage2 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "frm_see.frx":0554
            Key             =   ""
         EndProperty
         BeginProperty ListImage3 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "frm_see.frx":0666
            Key             =   ""
         EndProperty
         BeginProperty ListImage4 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "frm_see.frx":0778
            Key             =   ""
         EndProperty
         BeginProperty ListImage5 {2C247F27-8591-11D1-B16A-00C0F0283628} 
            Picture         =   "frm_see.frx":088A
            Key             =   ""
         EndProperty
      EndProperty
   End
   Begin MSComctlLib.Toolbar Toolbar1 
      Align           =   1  'Align Top
      Height          =   420
      Left            =   0
      TabIndex        =   1
      Top             =   0
      Width           =   6870
      _ExtentX        =   12118
      _ExtentY        =   741
      ButtonWidth     =   609
      ButtonHeight    =   582
      Appearance      =   1
      ImageList       =   "ImageList1"
      _Version        =   393216
      BeginProperty Buttons {66833FE8-8583-11D1-B16A-00C0F0283628} 
         NumButtons      =   4
         BeginProperty Button1 {66833FEA-8583-11D1-B16A-00C0F0283628} 
            Style           =   4
            Object.Width           =   2400
         EndProperty
         BeginProperty Button2 {66833FEA-8583-11D1-B16A-00C0F0283628} 
            Object.ToolTipText     =   "移动"
            ImageIndex      =   1
            Style           =   2
         EndProperty
         BeginProperty Button3 {66833FEA-8583-11D1-B16A-00C0F0283628} 
            Object.ToolTipText     =   "矩形选择"
            ImageIndex      =   5
            Style           =   2
         EndProperty
         BeginProperty Button4 {66833FEA-8583-11D1-B16A-00C0F0283628} 
            Object.ToolTipText     =   "全局"
            ImageIndex      =   3
            Style           =   2
         EndProperty
      EndProperty
   End
   Begin MapObjects2.Map Map1 
      Height          =   4575
      Left            =   0
      TabIndex        =   0
      Top             =   600
      Width           =   6495
      _Version        =   131072
      _ExtentX        =   11456
      _ExtentY        =   8070
      _StockProps     =   225
      BackColor       =   16777215
      BorderStyle     =   1
      Contents        =   "frm_see.frx":099C
   End
End
Attribute VB_Name = "frm_see"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim Boll As Boolean
Dim g_feedback As DragFeedback

 
Private Sub Form_Activate()
Dim lyr As MapLayer
Dim i As Integer
Map1.Layers.Clear

For i = frm_main.Map1.Layers.Count To 1 Step -1

   Set lyr = New MapLayer
   Set lyr = frm_main.Map1.Layers.Item(i - 1)
   Map1.Layers.Add lyr
Next

Map1.Extent = Map1.FullExtent

End Sub

Private Sub Form_Load()
 
Boll = False

Map1.Left = 0
Map1.Width = frm_see.Width
Map1.Top = Toolbar1.Height
Map1.Height = frm_see.Height - Toolbar1.Height

'Unload frm_lyr
'Unload frm_Identify
'存在窗体自动关闭的错误


End Sub

Private Sub Map1_AfterLayerDraw(ByVal index As Integer, ByVal canceled As Boolean, ByVal hdc As stdole.OLE_HANDLE)

Dim sym As New Symbol
sym.OutlineColor = moRed
sym.Size = 1
sym.Style = moTransparentFill
If Not Boll Then

  Map1.DrawShape frm_main.Map1.Extent, sym
Else
  Map1.DrawShape Map1.FullExtent, sym
End If

Boll = False

If index = 0 Then
   frm_main.Map1.TrackingLayer.Refresh True
End If

End Sub

Private Sub Map1_MouseDown(Button As Integer, Shift As Integer, x As Single, y As Single)
Dim pt As Point
Set pt = Map1.ToMapPoint(x, y)

If Map1.MousePointer = moZoom Then
   frm_main.Map1.Extent = Map1.TrackRectangle
End If

If Map1.MousePointer = moCross Then
   If frm_main.Map1.Extent.IsPointIn(pt) Then
      Set g_feedback = New DragFeedback
      g_feedback.DragStart frm_main.Map1.Extent, Map1, x, y
   End If
End If

Map1.Refresh

End Sub

Private Sub Map1_MouseMove(Button As Integer, Shift As Integer, x As Single, y As Single)
 
If Map1.MousePointer = moCross Then

  If Not g_feedback Is Nothing Then
     g_feedback.DragMove x, y
  End If

End If

End Sub

Private Sub Map1_MouseUp(Button As Integer, Shift As Integer, x As Single, y As Single)

If Map1.MousePointer = moCross Then

  If Not g_feedback Is Nothing Then
     frm_main.Map1.Extent = g_feedback.DragFinish(x, y)
     Set g_feedback = Nothing
  End If

End If

Map1.Refresh

End Sub

Private Sub Toolbar1_ButtonClick(ByVal Button As MSComctlLib.Button)

If Toolbar1.Buttons(3).Value Then
 
   Map1.MousePointer = moZoom
   
End If
 
If Toolbar1.Buttons(2).Value Then
   
    Map1.MousePointer = moCross
 
End If
 
If Toolbar1.Buttons(4).Value Then
   frm_main.Map1.Extent = frm_main.Map1.FullExtent
   Map1.MousePointer = moArrow
   Map1.Extent = Map1.FullExtent
   
   Boll = True
   Map1.Refresh
      
End If

End Sub