下面是用AE创建气泡式提示框的方法: 1、VB.Net源码 ''' <summary> ''' 创建文本提示框 ''' </summary> ''' <param name="x">提示框标识的位置X坐标</param> ''' <param name="y">提示框标识的位置Y坐标</param> ''' <param name="pTextString">提示框中显示的文本</param> ''' <param name="pPoint">提示框箭头指向的点</param> ''' <param name="pGraphicsContainer">包含提示框的graphicscontainer</param> ''' <returns></returns> ''' <remarks></remarks> Public Function CreateTextElement(ByVal x As Double, ByVal y As Double, ByVal pTextString As String, Optional ByVal pPoint As IPoint = Nothing, Optional ByVal pGraphicsContainer As IGraphicsContainer = Nothing) As IElement Dim pElement As IElement = New MarkerElementClass() Dim pTElement As IElement = New TextElementClass() Dim pTextSymbol As IFormattedTextSymbol = New TextSymbolClass() Dim pBalloonCallout As IBalloonCallout = CreateBalloonCallout(x, y) Dim pColor As IRgbColor = New RgbColorClass() pColor.Red = 150 pColor.Green = 0 pColor.Blue = 0 pTextSymbol.Color = pColor Dim pTextBackground As ITextBackground pTextBackground = pBalloonCallout pTextSymbol.Background = pTextBackground pTextSymbol.Size = 8 CType(pTElement, ITextElement).Symbol = pTextSymbol CType(pTElement, ITextElement).Text = pTextString If pPoint Is Nothing Then pPoint = New Point : pPoint.PutCoords(x + Const_Dis, y + Const_Dis) pTElement.Geometry = pPoint pGraphicsContainer.AddElement(pTElement, 1) Return pTElement End Function ''' <summary> ''' 创建balloon型提示框 ''' </summary> ''' <param name="x">提示框所在位置X坐标</param> ''' <param name="y">提示框所在位置Y坐标</param> ''' <returns></returns> ''' <remarks></remarks> Public Function CreateBalloonCallout(ByVal x As Double, ByVal y As Double) As IBalloonCallout Dim pRgbClr As IRgbColor = New RgbColorClass() pRgbClr.Red = 255 pRgbClr.Blue = 255 pRgbClr.Green = 255 Dim pSmplFill As ISimpleFillSymbol = New SimpleFillSymbolClass() pSmplFill.Color = pRgbClr pSmplFill.Style = esriSimpleFillStyle.esriSFSSolid Dim pBllnCallout As IBalloonCallout = New BalloonCalloutClass() pBllnCallout.Style = esriBalloonCalloutStyle.esriBCSRoundedRectangle pBllnCallout.Symbol = pSmplFill pBllnCallout.LeaderTolerance = 1 Dim pPoint As IPoint = New ESRI.ArcGIS.Geometry.PointClass() pPoint.X = x pPoint.Y = y pBllnCallout.AnchorPoint = pPoint Return pBllnCallout End Function 2、C#源码 public void CreateTextElment(double x, double y) { IPoint pPoint = new PointClass(); IMap pMap = axMapControl1.Map; IActiveView pActiveView = pMap as IActiveView; IGraphicsContainer pGraphicsContainer; IElement pElement = new MarkerElementClass(); IElement pTElement = new TextElementClass(); pGraphicsContainer = (IGraphicsContainer)pActiveView; IFormattedTextSymbol pTextSymbol = new TextSymbolClass(); IBalloonCallout pBalloonCallout = CreateBalloonCallout(x, y); IRgbColor pColor = new RgbColorClass(); pColor.Red = 150; pColor.Green = 0; pColor.Blue = 0; pTextSymbol.Color = pColor; ITextBackground pTextBackground; pTextBackground = (ITextBackground)pBalloonCallout; pTextSymbol.Background = pTextBackground; ((ITextElement)pTElement).Symbol = pTextSymbol; ((ITextElement)pTElement).Text = "测试"; pPoint.X = x + 42; pPoint.Y = y + 42; pTElement.Geometry = pPoint; pGraphicsContainer.AddElement(pTElement, 1); pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null); } public IBalloonCallout CreateBalloonCallout(double x, double y) { IRgbColor pRgbClr = new RgbColorClass(); pRgbClr.Red = 255; pRgbClr.Blue = 255; pRgbClr.Green = 255; ISimpleFillSymbol pSmplFill = new SimpleFillSymbolClass(); pSmplFill.Color = pRgbClr; pSmplFill.Style = esriSimpleFillStyle.esriSFSSolid; IBalloonCallout pBllnCallout = new BalloonCalloutClass(); pBllnCallout.Style = esriBalloonCalloutStyle.esriBCSRectangle; pBllnCallout.Symbol = pSmplFill; pBllnCallout.LeaderTolerance = 1; IPoint pPoint = new ESRI.ArcGIS.Geometry.PointClass(); pPoint.X = x; pPoint.Y = y; pBllnCallout.AnchorPoint = pPoint; return pBllnCallout; } 版权说明
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作 者：温景良
文章出处： 或
posted @ 2008-12-10 17:19 Views( 1285) Comments( 2)