Visual Basic

Christian Graus wrote:

I am assuming you don't want to pass, or you'd want our help.

Christian Graus wrote:

I was saving that bit of knowledge for myself.

mimi8469 wrote:

PLS I NEED HELP.. AM DESPERATE..

Member 4368316 wrote:

I use this approach because I don't want too use the standard GetPixel Api because it's way too slow

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Private b as bitmap<br />
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Public Sub Screenshot()<br />
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b = New Bitmap(My.Computer.Screen.Bounds.Width, My.Computer.Screen.Bounds.Height,Imaging.PixelFormat.Format32bppArgb)<br />
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Dim gfx As Graphics = Graphics.FromImage(b)<br />
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gfx.CopyFromScreen(My.Computer.Screen.Bounds.X, My.Computer.Screen.Bounds.Y, 0, 0,Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy)<br />
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End sub<br />
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public function GetPixel(byval x as integer, byval y as integer)<br />
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     return b.GetPixel(x, y).R<br />
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End Sub<br />

Member 4368316 wrote:

It's alot faster (in my Opinion) if you need to read many pixels

Member 4368316 wrote:

But it's limited to only the visible windows. I want to get the pixels even if the window is invisible (behind another window and not necessary minimized).

Christian Graus wrote:

The pixels don't exist, how can you get them ? If you have a handle to the window, and it's a .NET object, you can call DrawToBitmap, otherwise, you can't read a pixel that does not exist.

Member 4368316 wrote:

is your way (LockBits) the fastest or is BitBlit faster?

Christian Graus wrote:

Feng Yuan is a very cool guy, his book on C++ Graphics programming is the best one I've ever bought. The code you're linking to is in C++, you realise that, right ?

Christian Graus wrote:

Feng Yuan is a very cool guy, his book on C++ Graphics programming is the best one I've ever bought.

David Mujica wrote:

Also, you can set the object to "nothing", which will indicate to the garbage collector that the object is no longer referenced.