I've made a few complicated components that needs lots of CPU power to draw when resizing the form (their alClient aligned). When I resize the form it redraws it dozens of times, causing 50% CPU on my HT cpu (would otherwize cause 100%), while resizing. My application needs much CPU power already (it's a P2P client), so it would be nice to stop this resizing from causing that high CPU load. That's why I thought of the way old windowses resizes forms (it draws a simple rectangle, and when I let the mousebutton go, it redraws the form at that position). I know that is possible in XP too, but I can't really ask each user to enable the old resizing style, to save CPU power when using my app, so there must be a simple way (using a few modifications to original TForm code, or WinAPI's) to get the same effect on any windows OS. I looked through all settings (I think) in the default TForm, and found nothing (only for moving the form). Any ideas?