I have a custom button class. When the button get focus a colored box appears around it so the user can see where the cursor is. When the button loses focus the box is removed. Problem: If I have 2 or more buttons side by side and the user click with the mouse on the first button and then clicks on the second button and finally clicks on the second button again it executes code for the first button. Somehow the program is confused about which button has focus. This does not occur if the keyboard or keyboard shortcut keys are used. The lost focus event for the buttons is not firing correctly. What could be causing this? Thanks!