Finding a Pixel in a background window

[Gemba]

So I've tried searching and I've found a few things, but none of them seem to work

When I use the library, it doesn't screenshot the window but rather the whole screen (I supplied the handle).

When I used a MemoryReadPixel function it always returned 00FFFFFF

So basically I want to read a pixel from a background window, and PixelGetColor doesn't seem to work.

[Attckdog]

It maybe returning transparent due to the application knowing it's in the background. Some things will change to transparent to save resources.

What are you trying to read there may be a better way then PixelGetColor.

[Gemba]

I'm trying to read a Java application. I want to know when an event happens so I could automate my work.

I don't think it goes transparent because when I go over it with a smaller window I see everything that same

[Gemba]

Any ideas?

[MrMitchell]

These might work...

_PixelGetColor_CaptureRegion()

_PixelGetColor_GetPixelRaw()

Basically you can use them to search the window you want to search by briefly bringing it to the foreground to capture it to memory then search it in memory. I'll add links in a second when I can find them.

Edit: Add link...

Edited September 19, 2012 by MrMitchell

[James]

Some things will change to transparent to save resources.

They do? I can't say I've noticed this, do you have an example?

You do know 0xFFFFFF is white, right?