Hi Amrapali, Thanks for the reply. But the given solution didn't solve my problem. After handling the WM_DWMCOMPOSITIONCHANGED message for the layered window, I am still getting the error 317 for the SetLayeredWindowAttribute() call. However, when I debugged it, I found that my layered window...
Hi Amrapali, I am having the same issue for a layered pop-up window. It works well if Windows theme is set to Aero but when I change the theme to basic then the call to SetLayeredWindowAttribute() fails with the error code 317. Did you get any solution or workaround for it? Please let me know...