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Date Posted: 06:21:43 11/05/02 Tue
Author: Michel
Subject: Re: Drawing speed
In reply to: Chris 's message, "Drawing speed" on 04:31:27 11/04/02 Mon

Hi Chris,

The fastest, but hardest way to access the pixels is the use the TDibGraphic.ScanLine property, but you need to know the layout of the bits based on the image format. There are some examples of this in EnTransf.Pas.

A compromise is to use the TDibGraphic.RGB property, which accesses the bits directly in memory with a slight overhead.

The slowest but most flexible is to use the TDibGraphic.Canvas, which has higher level routines such as circles, rectangles, etc...

Best regards,

>What is the fastest method to draw pixels and lines
>and to check if a pixel is set (black) or not (white).

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