I\'m having some issues getting a notification box to behave correctly in c#. Basically I\'m showing a boarderless form in the lower right hand side of the screen, which dis
Possibly WS_EX_NOACTIVATE extended window style is what you are looking for. Window with this style is not activated when clicked. For example, Virtual Keyboard window has this style.
To apply this style to window, override CreateParams function and change baseParams.ExStyle.