Focus-problems

[J Holzer]

Hello! I´m having a problem with an application. This app has two windows, one as main view, one for entering some value that pops up when the value is needed. Sometime it happens that another application fetches the window-focus and so theres no focus on my input window. In order to see that i made the inputbox change it´s color. I´m using the "deactivate"-event to do this. Unfortunately this doesn´t work always. Does anybody have any idea why this could be so?