windows - Is it possible to make WPF app mainwindow inaccessible from taskbar while showing taskbar icon? -

i have wpf app has mainwindow hosts win32 content. when mainwindow created set

showintaskbar = false 

and locate outside screen(s). when it's ready set

showintaskbar = true 

this causes taskbar icon changed citrix default icon when run in xenapp citrix.

so question is: can show taskbar icon time app in way user can not see/access mainwindow via taskbar icon?