VisualArea2DClassicToolBaseTResult Class

Construct an Area2D-based tool.

The Area2D currently covered by this tool.

Color to be used for painting the area. Note that changes to this property will not be reflected in the tool's visualization until it has been repainted.

Override the base class property "Color" to have the same meaning as RectColor.

The ID under which the unmanaged display "knows" the label

Size to be used for painting visible drag handles. Note that changes to this property will not be reflected in the tool's visualization until it has been repainted.

Style to be used for painting visible drag handles. Note that changes to this property will not be reflected in the tool's visualization until it has been repainted.

tell whether actions on the display object require an invoke action or not (being user interface objects, display objects should not be modified asynchronously)

Label dragable?

The display on which the label lives (if any...). Note that a label may only be associated with one display at a time

Untyped get accessor for the last calculation result. Untyped results are - although access is a bit more complicated - sometimes more convenient for example in this case when building generic result views.

Get the type of the result returned by this VisualToolBase.

Field for user-definable data to be associated with the overlay object.

Text being displayed on the label and/or in the status line

Get the typed version of the calculation result (sometimes easier to access than the untyped version).

Pixel positions to paint the user object with. Modifying the Vertex positions will not change the appearance of the overlay and the changes will in fact be overwritten in the next Paint event. Positions are in image coordinates, NOT in client coordinates.

Use or don't use XOR mode for painting.

Method to be called whenever a property value changed that necessitates a destroy + create in order to reflect the property change on the actual display.

Determines whether the specified Object is equal to the current Object.

Execute the tool with its current settings. Execution will raise the ResultUpdated event, unless OnResultUpdated(VisualToolEventArgs) has been overridden and modified to not do this. In case you override this method, be aware that this is the method executed every time the VisualToolBase's Result needs to be updated - for example when the tool has been moved. In case an error occurs during calculation, the ExecutionError event will be raised. Execution will happen automatically every time something happens to the VisualToolBase object. If something happens to the image (new image content or new image) execution must be triggered by calling this Execute method.

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.

Correct the vertices in the event arguments so that they remain a perpendicular rectangle.

Serves as a hash function for a particular type.

Gets the Type of the current instance.

Creates a shallow copy of the current Object.

Overrideable version of the OnClick event.

Establish connection with a new display.

About to sever the connection between this object and a display...

Overrideable version of the OnDrag event.

Overrideable version of the OnDragged event.

Override this function to provide the tool's implementation here. If something goes wrong during execution, simply throw an exception in the implementation of this function. This exception will be caught and passed on by means of the ExecutionError event.

Routing function that invokes the ExecutionError event. Override this function to react directly to this event in a child class (but don't forget to call , otherwise the event will not be raised.

Paint the line and the drag handles.

Routing function that invokes the ResultUpdated event. Override this function to react directly to this even in a child class (but don't forget to call , otherwise the event will not be raised.

Established a connection with a new display.

Remove a label from its display

Member version of the PaintDragHandle method that defaults to the currently set drag handle size and style.

Paint the three drag handles of the rectangle

Paint the rump of the rectangle.

Returns a string that represents the current object.

Event that is raised after this VisualTool object has been clicked.

Event that is raised while this visual tool object is being dragged.

Event that is raised after this visual tool object has been dragged.

Event that informs about execution errors. If an error occurs during execution of this VisualToolBase object, the ExecutionError event will raised instead of the ResultUpdated event.

Paint event that will be raised if the object needs to be painted.

Event that informs about updated results (either because the object has been moved or parameters changed, or because the Execute method has been called.

Internally stored color.

Field memorizing the result from the last tool run.