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Tip of the Day
Language: Visual Basic
Expertise: Beginner
Apr 16, 1998



Application Security Testing: An Integral Part of DevOps

Accessing individual pixels

I'm developing a VB program that requires manipulation of pictures. I can read them in and display them without any problem, but I have no way (that I can find) of accessing individual pixels.

I need to be able to read each pixel's RGB value, possibly altering it. Please help!

You can do this one of two ways. The simplest, albeit the slowest, is with pure VB. Take a look at the Point Method (in your Help file), which is used to read the RGB value of a pixel. To set the color of a pixel, use the PSet Method.

The other alternative, which is indeed quicker, is to use the SetPixel and GetPixel APIs.

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