Question

Mapx中如何删除图元??

我在VB中使用如下代码，可以在地图上显示5个点：

Dim ggLayer As MapXLib.Layer
Dim ggStyle As MapXLib.Style
Dim gg As MapXLib.Feature

Set ggLayer = Map1.Layers.CreateLayer("ggLayer", , 1)
Set Map1.Layers.AnimationLayer = ggLayer
Set ggStyle = Map1.Layers(1).Style

With ggStyle
.SymbolFont.Name = "mapinfo transportation"
.SymbolCharacter = 97
.SymbolFont.Size = 25
.SymbolFontColor = miColorBlue
End With

Dim f As MapXLib.Feature
Dim p As New MapXLib.Point
Dim x, y As Double

x = 104.123
y = 28.211

For i = 1 To 5
p.Set x, y

Set gg = Map1.FeatureFactory.CreateSymbol(p, ggStyle)
Set f = Map1.Layers("ggLayer").AddFeature(gg)
x = x + 0.09
y = y + 0.05
Next

我想知道怎样把第三个点删掉？？谢谢！！

Answer 1

Map.Layer(Item).DeleteFeature(FeatureKey / FeatureID)

Answer 2

自动加载可以在oninitialdlg函数里面(如果是对话框程序的话)设置加载地图这样可以运行后自动默认显示完整程序也有

Answer 3

什么东西来的，教教我

Answer 4

你不用这么麻烦！在“库”文件中！就可以删除！