ITT Rule IDL Version 7.0 User Manual download pdf (Page 317)

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Chapter 14: Creating a User Interface Panel 317

iTool Developer’s Guide Creating a UI Panel Interface

The following statement retrieves an array of object references to all of the currently

selected items in the iTool:

oTargets = state.oTool->GetSelectedItems(COUNT = nTarg)

Note

Note that this example assumes that a reference to the iTool object is stored in the

oTool field of the state structure variable. The COUNT keyword to the

GetSelectedItems method returns the number of items selected.

Use the DoAction Method

In many cases, the user’s interaction with the user interface panel will instruct the

iTool to apply an iTool operation to the selected item. Where possible, use the

DoAction method of the operation to perform this task. Calling the DoAction method

ensures that the changes caused by the operation are properly inserted into the iTool

undo/redo system.

For example, the following statement:

success = state.oUI->DoAction('Operations/Rotate/RotateLeft')

calls the DoAction method on the IDLitUI object associated with the current iTool,

invoking the operation registered with the system with the operation identifier

'Operations/Rotate/RotateLeft'.

Redraw the iTool Window

Call the RefreshCurrentWindow method of the iTool object to force the iTool’s

window to update, displaying any changes that took place as the result of the

operations executed in your event handling routine:

state.oTool->RefreshCurrentWindow

Note

Note that this example assumes that a reference to the iTool object is stored in the

oTool field of the state structure variable.

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ITT Rule IDL Version 7.0 User Manual Page 317

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