frmsurfaceslope.frm

超图网络分析扩展的VB开发程序的应用,对地理信息系统开发有益

VERSION 5.00
Begin VB.Form frmSurfaceSlope 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "构建坡度图"
   ClientHeight    =   4290
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   5370
   ControlBox      =   0   'False
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   4290
   ScaleWidth      =   5370
   ShowInTaskbar   =   0   'False
   StartUpPosition =   1  'CenterOwner
   Begin VB.CommandButton cmdCancel 
      Caption         =   "取消"
      Height          =   435
      Left            =   4410
      TabIndex        =   16
      Top             =   3705
      Width           =   945
   End
   Begin VB.CommandButton cmdOk 
      Caption         =   "确定"
      Height          =   435
      Left            =   3300
      TabIndex        =   15
      Top             =   3705
      Width           =   945
   End
   Begin VB.Frame Frame4 
      Caption         =   "结果数据集保存"
      Height          =   1140
      Left            =   1950
      TabIndex        =   9
      Top             =   1260
      Width           =   3405
      Begin VB.TextBox txtDataset 
         Height          =   315
         Left            =   1095
         TabIndex        =   14
         Text            =   "Raster"
         Top             =   675
         Width           =   2070
      End
      Begin VB.ComboBox cmbDsListResult 
         Height          =   315
         Left            =   1095
         Style           =   2  'Dropdown List
         TabIndex        =   10
         Top             =   285
         Width           =   2070
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "数据源："
         Height          =   195
         Index           =   6
         Left            =   340
         TabIndex        =   12
         Top             =   330
         Width           =   720
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "数据集："
         Height          =   195
         Index           =   7
         Left            =   340
         TabIndex        =   11
         Top             =   705
         Width           =   720
      End
   End
   Begin VB.Frame Frame3 
      Caption         =   "坡度分析类型"
      Height          =   1065
      Left            =   1950
      TabIndex        =   5
      Top             =   2460
      Width           =   3405
      Begin VB.ComboBox cmbList 
         Height          =   315
         ItemData        =   "frmSurfaceSlope.frx":0000
         Left            =   1620
         List            =   "frmSurfaceSlope.frx":000D
         Style           =   2  'Dropdown List
         TabIndex        =   13
         Top             =   240
         Width           =   1545
      End
      Begin VB.TextBox txtZScale 
         Height          =   285
         Left            =   1635
         TabIndex        =   6
         Text            =   "1"
         Top             =   615
         Width           =   1515
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "坡度分析类型："
         Height          =   195
         Index           =   4
         Left            =   340
         TabIndex        =   8
         Top             =   300
         Width           =   1260
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "高程比例因子："
         Height          =   195
         Index           =   5
         Left            =   345
         TabIndex        =   7
         Top             =   645
         Width           =   1260
      End
   End
   Begin VB.Frame Frame1 
      Caption         =   "参加分析的数据"
      Height          =   1170
      Left            =   1950
      TabIndex        =   0
      Top             =   45
      Width           =   3390
      Begin VB.ComboBox cmbDsList 
         Height          =   315
         Left            =   1095
         Style           =   2  'Dropdown List
         TabIndex        =   2
         Top             =   255
         Width           =   2100
      End
      Begin VB.ComboBox cmbDtList 
         Height          =   315
         Left            =   1095
         Style           =   2  'Dropdown List
         TabIndex        =   1
         Top             =   705
         Width           =   2100
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "数据源："
         Height          =   195
         Index           =   0
         Left            =   340
         TabIndex        =   4
         Top             =   330
         Width           =   720
      End
      Begin VB.Label Label1 
         AutoSize        =   -1  'True
         Caption         =   "数据集："
         Height          =   195
         Index           =   1
         Left            =   340
         TabIndex        =   3
         Top             =   705
         Width           =   720
      End
   End
   Begin VB.Image Image1 
      BorderStyle     =   1  'Fixed Single
      Height          =   4320
      Left            =   45
      Picture         =   "frmSurfaceSlope.frx":0023
      Stretch         =   -1  'True
      Top             =   0
      Width           =   1875
   End
End
Attribute VB_Name = "frmSurfaceSlope"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Sub cmbDsList_Click()
    If cmbDsList.Text = "" Then Exit Sub
    If frmMain.bActiveFrm Then
        ChangeDs cmbDsList.Text, cmbDtList
    End If
End Sub

Private Sub cmdCancel_Click()
    Unload Me
End Sub

Private Sub cmdOk_Click()
    Dim objDs As soDataSource
    Dim objDtRst As soDatasetRaster
    Dim objSurfaceAnalyst As soSurfaceAnalyst
    Dim objSurfaceOperator As soSurfaceOperator
    Dim myseSlopeType As seSlopeType
    Dim strTmp As String
    
    Set objDs = frmMain.SuperWorkspace.Datasources(cmbDsList.Text)
    Set objDtRst = objDs.Datasets(cmbDtList.Text)
    Set objDs = frmMain.SuperWorkspace.Datasources(cmbDsListResult.Text)
    strTmp = DataSetName(objDs, txtDataset.Text)
    If strTmp <> "" Then
        Set objSurfaceAnalyst = frmMain.SuperAnalyst.SurfaceAnalyst
        Set objSurfaceOperator = objSurfaceAnalyst.Surface
        myseSlopeType = cmbList.ListIndex + 1
        Set objDtRst = objSurfaceOperator.Slope(objDtRst, myseSlopeType, CDbl(txtZScale.Text), objDs, strTmp)
        If Not objDtRst Is Nothing Then
            frmMain.SuperWkspManager.Refresh
        Else
            MsgBox "生成坡度图失败", vbInformation, "信息提示"
        End If
        Set objDtRst = Nothing
        Set objDs = Nothing
        Set objSurfaceAnalyst = Nothing
        Set objSurfaceOperator = Nothing
        Unload Me
    Else
        txtDataset.Text = ""
        txtDataset.SetFocus
    End If
    
    Set objDtRst = Nothing
    Set objDs = Nothing
    Set objSurfaceAnalyst = Nothing
    Set objSurfaceOperator = Nothing
End Sub

Private Sub Form_Activate()
    frmMain.bActiveFrm = True
    cmbDsList_Click
End Sub

Private Sub Form_Load()
    cmbList.ListIndex = 0
End Sub

Private Sub txtZScale_Change()
    If Trim(txtZScale.Text) = "" Then txtZScale.Text = 1
End Sub

Private Sub txtZScale_KeyPress(KeyAscii As Integer)
    If (KeyAscii > Asc("9")) Or (KeyAscii < Asc("0")) Then
        If (KeyAscii <> vbKeyBack) And (KeyAscii <> Asc(".")) Then
            KeyAscii = 0
            Beep
        End If
    End If
End Sub