Reference/LockWindow

From NSIS Wiki

LockWindow

on|off

LockWindow on prevents the main window from redrawing itself upon changes. When LockWindow off is used, all controls that weren't redrawn since LockWindow on will be redrawn. This makes the pages flickering look nicer because now it flickers a group of controls at the same time, instead of one control at a time. The individual control flickering is more noticeable on old computers.

Command introduced with NSIS v2.0

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