Testing the Circle Control

Once you have built and registered the Circle control, you can use Test Container to see how it behaves.

To test the Circle control

1. From the Tools menu, click ActiveX Control Test Container.

2. From the Edit menu, click Insert New Control.

   The Insert Control dialog box appears.

3. From the list box, select Circ Control.

4. Click OK to close the Insert Control dialog box and insert the control into Test Container.

   The Circle control appears in Test Container, as shown in the figure below. Notice that the control is drawn as an ellipse within the bounding rectangle of the control.

5. Move the control within the container to observe how the control is redrawn. Resize the control to see how its ellipse is redrawn to the size of the bounding rectangle.

6. From the Control menu, click InvokeMethods.

   The InvokeMethod dialog box appears.

   Notice that AboutBox is selected in the Method Name drop-down list box. This is the only method defined in the Circle control.

7. Click Invoke.

   The AboutCircControl dialog box appears. The icon you edited earlier is displayed in the dialog box.

8. Click OK to close the AboutCircControl dialog box.

9. Click Close to close the InvokeMethod dialog box.

The Circle Control

Notice that the background color of the control is white. You'll modify control painting in the next lesson.

At this point you have not defined any properties or events for the Circle control. From the Test Container Edit menu, click Properties. Notice that there are no properties. From the Options menu, select Logging and make sure that Log to output window is selected. Click, move, and resize the control. No events are displayed. As the Circle control evolves, you will add a number of new properties and events.

When you have finished, close Test Container.