This document is archived and information here might be outdated.  Recommended version.


IMapControl2.CurrentTool Property (ArcObjects .NET 10.4 SDK)
ArcObjects Library Reference (Controls)  

IMapControl2.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(
  ITool** pTool
);
[C++]
HRESULT putref_CurrentTool(
  ITool* pTool
);
[C++]

Parameters pTool [out, retval]
pTool is a parameter of type ITool pTool [in]
pTool is a parameter of type ITool

Product Availability

Available with ArcGIS Engine.

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.

[C#]
ICommand command=new ControlsMapPanToolClass();
command.OnCreate(axMapControl1.Object);
if (command.Enabled == true)
{
axMapControl1.CurrentTool= (ITool) command;
}
[Visual Basic .NET]
Dim pCommand As ICommand
pCommand=New ControlsMapPanToolClass
pCommand.OnCreate(AxMapControl1.Object)
If pCommand.Enabled=True Then
AxMapControl1.CurrentTool=pCommand
End If

See Also

IMapControl2 Interface