Drawing Custom Graphics/Mouse input in the GUI window

Greetings Ladies and Gentlemen,
Is there an easy way of creating simple vector graphics in the GUI window and a simple coordinate input and select/deselect mechanism?
For example, my model generates a number of coordinates that I visualize as selectable dots on the dedicated GUI window (not the 2D or 3D model window) and I give the user an option of selecting a number of those dots either by clicking on them or by clicking and dragging the selection window and then postprocessing the selected ones (e.g. storing their coordinates in the database).
I tried experimenting with the GUI and I managed to get it to fire mouse up and mouse down events, but not OnDraw and I could not figure out where to find mouse coordinates.
Could somebody possibly expalain if that is possible and hopefully direct me to appropriate resources/examples?
Thank you!
Vadim

You can get full control of drawing and interacting with a mouse using a "graph" window type in the Flexsim GUI builder.

You can use OnDraw, OnClick, and other event handlers. cursorinfo() is the command you want to use to get the mouse cursor's location. clickcode() may also be helpful.

We use this mechanism in several places in the software, such as the Animator's timeline and the object selection popup.

Here are links to a few examples. These ones are drawing graphs, but you can draw whatever you want. Several of the widgets in CT are also custom-drawn using this method.

http://www.flexsim.com/community/for...ead.php?t=1863

http://www.flexsim.com/community/for...read.php?t=409