Win32: How to hide 3rd party windows in taskbar by hWnd

Question

I have to hide popup windows in third party library.

I have implemented windows hook stuff with SetWindowsHookEx and know all the newely created hWnd(s). I listen t

Answer 1

You must use GWL_EXSTYLE to get/set the EX flags, GWL_STYLE will not work for EX flags.