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Frequently Asked Questions

Prevent window update

Question:

How can I temporarily prevent any given window from updating?

Answer:

Make a call to the Windows API function LockWindowUpdate with
the handle of the Window you wish to lock as a parameter. Send
a zero as a parameter to enable updating and to restore the
drawing.

  LockWindowUpdate(Memo1.Handle);
  .
  .
  LockWindowUpdate(0);

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