Hi experts, I am going to design component called "connector", which draws a line between the point at which you press your mouse and the point at which you release your mouse. Before release mouse, the line end point should follow the mouse -- like you see in MS visio when you draw a line to connect 2 objects.
Base on UIComponent, I wrote a component which draws a line on screen between 2 given points. Then in MouseMove event, I tried to change the end point. However, the component doesn't re-render itself. What's wrong with it? Do you known any open-source examples looks like visio? Thanks a lot.

