对表操作
（1） 新建表
Option Explicit
Dim FileSpec As String
Dim csys As MapXLib.CoordSys
Private Sub Command1_Click()
On Error Resume Next
CM1.DialogTitle = "保存表文件"
CM1.DefaultExt = "表文件|*.tab"
CM1.Filter = "表(*.tab)|*.tab"
CM1.CancelError = True
CM1.Action = 2
If Err.Number = 32755 Then Exit Sub
FileSpec = CM1.filename
End Sub
Private Sub Command2_Click()
Dim ctype As Integer
Dim cunits As Integer
Formmain.Map1.NumericCoordSys.PickCoordSys
Set csys = Formmain.Map1.NumericCoordSys
ctype = csys.Type
cunits = csys.Units
'Set Formmain.Map1.Bounds = rect
' If csys.Type = 0 Then
'FrmRange.Show 1
'rect的左下角不能为（0，0）
'csys.Set ctype, , cunits, , , , , , , , , , rect
'End If
End Sub
Private Sub Command3_Click()
Dim LayerName As String
Dim FeatureNameLen As Integer
Dim LayerPos As Integer
Dim LayerInfo As MapXLib.LayerInfo
Dim retn As Integer
On Error GoTo ErrorHand
LayerName = Text1.Text
FeatureNameLen = Val(Text2.Text)
LayerPos = Val(Text3.Text)
If FeatureNameLen <= 0 Then MsgBox "请输入大于0的数字!", , "警告"
If LayerPos <= 0 Then MsgBox "请输入大于0的数字!", , "警告"
Formmain.Map1.Layers.CreateLayer LayerName, FileSpec, LayerPos, FeatureNameLen, csys
'将新建图层加入到数据字典和数据集
'If Option_AddToGeoDict = True Then
'LayerInfo.Type = miLayerInfoTypeGeodictUserName
'LayerInfo.AddParameter "Name", Text1.Text
'If Option_AddToDataset = True Then
'LayerInfo.AddParameter "AutoCreate", 1
'LayerInfo.AddParameter "DatasetName", Text1.Text
'End If
'Formmain.Map1.Layers.Add LayerInfo
'End If
'ChangeCombo
Unload Me
ErrorHand:
Select Case Err.Number
Case 1230
retn = MsgBox("是否覆盖?", 4, "错误提示")
If retn = 6 Then
Kill FileSpec
Resume
ElseIf retn = 7 Then
End If
End Select
End Sub
Private Sub Command4_Click()
Unload Me
End Sub
Private Sub Form_Load()
FileSpec = ""
End Sub
控件解释：
text1 新建图层的名称
text2 图元名称长度
text3 图层位置
command1 保存
command2 投影
command3 确定
command4 取消
（2） 打开表
Dim filename As String
Dim filepath As String
Dim LayerName As String
Dim lyr As MapXLib.Layer
Dim LayerInfo As New MapXLib.LayerInfo
Dim FilterIndex As Integer
Dim ftrs As New MapXLib.Features
Dim csys As New MapXLib.CoordSys
On Error Resume Next
CM2.DialogTitle = "打开文件"
CM2.DefaultExt = "Tab|*.tab"
CM2.Filter = "表(*.tab)|*.tab|GeoTiff file(*.tif)|*.tif|shapefile(*.tab)|*.tab|ServerLayer(spatialware)"
CM2.CancelError = True
CM2.Action = 1
If Err.Number = 32755 Then Exit Sub
filename = CM2.FileTitle
filepath = CM2.filename
filepath = Left(filepath, InStr(filepath, filename) - 1)
LayerName = Left(filename, InStr(filename, ".") - 1)
FilterIndex = CM2.FilterIndex
Select Case FilterIndex
Case 1:
LayerInfo.Type = miLayerInfoTypeTab
LayerInfo.AddParameter "FileSpec", filepath + filename
LayerInfo.AddParameter "Name", LayerName
Case 2:
LayerInfo.Type = miLayerInfoTypeRaster
LayerInfo.AddParameter "FileSpec", filepath + filename
LayerInfo.AddParameter "Name", LayerName
Case 3:
csys.Set 1, 0
LayerInfo.Type = miLayerInfoTypeShape
LayerInfo.AddParameter "FileSpec", filepath + filename
LayerInfo.AddParameter "CoordSys", csys
End Select
Set lyr = Formmain.Map1.Layers.Add(LayerInfo, 1)
（3） 关闭表
Private Sub Command1_Click()
Dim lyr As MapXLib.Layer
Dim i As Integer
If Trim(Combo1.Text) <> "" Then Set lyr = Formmain.Map1.Layers(Combo1.Text)
lyr.Datasets.RemoveAll
Formmain.Map1.Layers.Remove lyr
Set lyr = Nothing
Unload Me
End Sub
Private Sub Command2_Click()
Unload Me
End Sub
Private Sub Form_Load()
Dim lyr As MapXLib.Layer
For Each lyr In Formmain.Map1.Layers
Combo1.AddItem lyr.Name
Next
If Combo1.ListCount > 0 Then Combo1.ListIndex = 0
Set lyr = Nothing
End Sub
控件解释：
combo1 tab表的列表
command1 确定关闭
command2 取消
