Compile and link the Cursor application. Then start Windows and the Cursor application. Now, when you move the cursor into the client area, it changes to the bull's-eye shape.
Press and hold down the left mouse button, drag the mouse to a new position, and release the mouse button. You should see a selection that looks like this:
Press the arrow keys to move the cursor. Then press ENTER to see the application display the hourglass cursor, indicating that a lengthy operation is in progress.