Suppress form repaints during calculations (Views: 712)
Problem/Question/Abstract: Is there a way to stop an application from painting during heavy calculations? Answer: Call LockWindowUpdate() on your MainForm. Your form will not be redrawn and cannot be moved until you unlock it by passing 0 as the window handle. Note that LockWindowUpdate() does not hide the form nor does it reset the WS_VISIBLE style bit. LockWindowUpdate(MainForm.Handle); // pass the handle of window to lock // heavy calculation here LockWindowUpdate(0); // unlock it |