GUI that does not show itself

[erezlevi]

how can I create a GUI interface that does not show itself to the user?

I am looking for a solution for GUIregistermsg, when another application will send me a trigger (windows message) that will cause me to look for a string in the clipboard. that part i wrote allready, the issue is that I don't want the user to close the window, so How can I hide the window?

thanks,

[Zedna]

GUISetState(@SW_HIDE)