IMapControl4.CurrentTool Property

Current active tool for the MapControl. Set to nothing to clear the tool.

[Visual Basic .NET]
Public Property CurrentTool As ITool

[C#]
public ITool CurrentTool {get; set;}

[C++]
HRESULT get_CurrentTool(
void
);

[C++]
HRESULT putref_CurrentTool(
);

Product Availability

Description

The CurrentTool is the Tool used to interact will the MapControl's display. Always check if a tool is enabled before setting it to the CurrentTool property, otherwise a user will be able to use a tool that is actually disabled.

Errors Returned

1004 800a03ec: Current tool will not deactivate

Remarks

When the CurrentTool is set the following events occur:

1. The ITool::Deactivate event is triggered on the 'old' CurrentTool if one was set. If this event returns false a trappable error ocurrs. If this event returns true the 'old' CurrentTool is removed and replaced.
2. The ICommand::OnClick event is triggered on the 'new' CurrentTool and its cursor is picked up.

Within an ITool implementation it is recommended that the ITool::Deactivate event returns true. This allows a 'new' CurrentTool to be set, and allows the release of the CurrentTool when an application is shutting down.

ICommand command = new ControlsMapPanToolClass();
command.OnCreate(axMapControl1.Object);
if (command.Enabled == true)
{
  axMapControl1.CurrentTool= (ITool) command;
}

Dim pCommand As ICommand
pCommand = New ControlsMapPanToolClass
pCommand.OnCreate(AxMapControl1.Object)
If pCommand.Enabled = True Then
  AxMapControl1.CurrentTool = pCommand
End If

See Also