1如何修改柱状专题图的样式？
Map1.DataSets.Item(DsName).Themes("trafficflubar").Properties.Size = BarSize
Map1.DataSets.Item(DsName).Themes("trafficflubar").Properties.BarWidth = BarWidth

Map1.DataSets.Item(DsName).Themes("trafficflubar").ThemeProperties.MultivarCategories.Item(1).style.RegionColor = SmallTruck_Color
Map1.DataSets.Item(DsName).Themes("trafficflubar").ThemeProperties.MultivarCategories.Item(2).style.RegionColor = MiddleTruck_Color
Map1.DataSets.Item(DsName).Themes("trafficflubar").ThemeProperties.MultivarCategories.Item(3).style.RegionColor = BigTruck_Color

2如何修改饼状专题图的样式？
Map1.DataSets.Item(DsName).Themes("trafficflupiebar").Properties.Size = PieBarSize
''''Map1.DataSets.Item(DsName).Themes("trafficflupiebar").Properties.Width = PieBarWidth

Map1.DataSets.Item(DsName).Themes("trafficflupiebar").ThemeProperties.MultivarCategories.Item(1).style.RegionColor = SmallTruck_Color
Map1.DataSets.Item(DsName).Themes("trafficflupiebar").ThemeProperties.MultivarCategories.Item(2).style.RegionColor = MiddleTruck_Color
Map1.DataSets.Item(DsName).Themes("trafficflupiebar").ThemeProperties.MultivarCategories.Item(3).style.RegionColor = BigTruck_Color
Map1.DataSets.Item(DsName).Themes("trafficflupiebar").ThemeProperties.MultivarCategories.Item(4).style.RegionColor = SmallCar_Color

3如何修改标注的样式？
 Set oStyle = New MapXLib.style
        oStyle.TextFont.Size = 12
        oStyle.TextFont.Bold = True
        oStyle.SymbolFontColor = vbWhite
        oStyle.TextFontBackColor = vbBlue
        oStyle.TextFontOpaque = True
    
        Map1.Annotations.AddText(rs(showfield), lyr.Selection(1).CenterX, lyr.Selection(1).CenterY, 3).Graphic.style = oStyle
        （白字黑底）