Bug in ControlMapMeasureTool? “Measure An Area” creates a duplicate dialog in ArcGIS Engine 10

Question

When we add a measure tool to the AxToolbarControl through the properties dialog, we can change to measure lenght and area in the dialog that pops up. But when we add a ControlsMapMeasureTool through code like this:

Dim control As AxMapControl = axMapControl1
Dim tool As New ControlsMapMeasureTool()
tool.OnCreate(control.[Object])
control.CurrentTool = DirectCast(tool, ITool)

We followed the instructions in the documentations How to create a command or tool to work with the controls The dialog pops up but when we choose "Measure An Area" a new Measure dialog pops up and we can still only measure lenght. What are we doing wrong?

Steps to reproduce:

1. Create a new MapControlApplication in VS
2. Create a new MenuItem in the Menu "Test"
3. Create a new OnClick event handler TestToolStripMenuItem_Click
4. Paste the code above into the event handler
5. Run the application
6. Load a map that has a spatialreference that is a projected coord system (not a geographic coord system).
7. choose the Test menu item
8. Change to "Measure An Area" in the dialog
9. Drag the dialog to the side.
10. Two dialogs are active but only lenght can be measured.

Answer 1

I think there are two separate issues.

1) Area measurement will only be enabled when the map's spatialreference is a projected coord system (not a geographic coord system).

2) You shouldn't create a tool if it is already in the toolbar control. Instead, you should find it and activate it.

private void activateMeasuretoolToolStripMenuItem_Click(object sender, EventArgs e)
{
    int idx = axToolbarControl1.Find("esriControls.ControlsMapMeasureTool");
    if(idx > -1)
    {
        // use the tool that's already in the toolbar
        axToolbarControl1.CurrentTool = (ITool)axToolbarControl1.GetItem(idx).Command;
    }
    else
    {
        // add the tool to the toolbar
        ControlsMapMeasureTool t = new ControlsMapMeasureToolClass();
        t.OnCreate(axMapControl1.Object);
        axToolbarControl1.AddItem(t);
        axMapControl1.CurrentTool = (ITool)t;
    }
}

Answer 2

I know this thread is close to 2 years old but I'm seeing the exact same behavior.

Is anyone else still seeing this behavior? Apparently it was/is a documented bugs that was supposedly resolved in sp3...Bug NIM-068806, however I'm still seeing the behavior with SP4 installed?

Thanks Matt