How to batch calls to ShowWindow

I am updating a window by making several calls to ShowWindow() on the controls within the window. I can literally watch the controls coming and going, sometimes taking many seconds to complete. Is there a way I can freeze the window, make my calls to ShowWindow(), then unfreeze it, so that it paints only once?

In the past, I've used the "LockWindowUpdate" function. However, it seems that this is not the proper use case. Check out the WM_SETREDRAW message. Send this message to the parent window of the controls.

Viggy

Quote:

---

Originally Posted by bobkohn

I am updating a window by making several calls to ShowWindow() on the controls within the window. I can literally watch the controls coming and going, sometimes taking many seconds to complete. Is there a way I can freeze the window, make my calls to ShowWindow(), then unfreeze it, so that it paints only once?

---

Check out DeferWindowPos