PRB: Cannot Set Marker Size or Style for MSChart

• Microsoft Visual Basic Professional and Enterprise Editions for Windows, version 5.0

SYMPTOMS

Setting the Size or Style properties of the marker object in the Microsoft Chart control at run-time does not result in size or style changes.

CAUSE

The SeriesMarker Auto Property is set to False.

RESOLUTION

Set the SeriesMarker Auto Property to True.

STATUS

Microsoft is researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

The following section demonstrates how to create a sample project that modifies properties of Markers on an MSChart control.

Step-by-Step Example

1. Start a new Standard EXE project. Form1 is created by default.

2. Click Components on the Project menu, and then check "Microsoft Chart Control."

3. Add an MSChart control and a CommandButton to Form1.

4. Set the ChartType property of the MSChart control to 3- vtChChartType2dLine.

5. Add the following code to Form1:

         Option Explicit
         Private Sub Command1_Click()
            Dim x As Integer, y As Integer
   
            MSChart1.RowCount = 10
            MSChart1.ColumnCount = 4
   
            For y = 1 To 4
               MSChart1.Column = y
               For x = 1 To 10
                   MSChart1.Row = x
                   MSChart1.Data = x * y
               Next x
   
               With MSChart1.Plot.SeriesCollection.Item(y)
                  'The next line is required to change the Marker properties.
                  .SeriesMarker.Auto = False
                  .DataPoints.Item(-1).Marker.Visible = True
                  .DataPoints.Item(-1).Marker.Size = 20
                  .DataPoints.Item(-1).Marker.Style = VtMarkerStyleStar
                  .DataPoints.Item(-1).Marker.FillColor.Automatic = False
                  .DataPoints.Item(-1).Marker.FillColor.Set 0, 0, 255
               End With
   
            Next y
         End Sub
   
   

6. Press the F5 key to run the project.

7. Click Command1. Note that the Marker style and size do not change.

REFERENCES

The Microsoft Chart control is based on First Impressions by Visual Components. You can obtain a trial or full version of First Impressions at the following web site:

    http://www.visualcomp.com/products/fi.htm