VB Forum / Win API / November 2006

I have a loop to wait for a new window which is opened by an other program,
something like this,
 <doStartAnOtherApp >
 busy=true

I've been using the TransparentBlt API for a number of years to
composite together a series of DC layers -- no problems there.
My question is that I know have a PNG file with a transparent
background. I need to cut out a portion of this image and

Originally, the the problem occurs with impersonation when creating a
COM+ object from a VB COM object, which in turn is created on the
ASP.NET page. The solution is described in
http://support.microsoft.com/kb/q248187/

I am searching a function of windows api for displaying running process
(processes ??? sorry i'm french!!!).
For example, i want to know if the application which the name is "db.exe" is
running or not, for displaying error message in my application.

I need to 'convert' an IPicture obj into a Byte Array.
I think that CopyMemory API could help me about this, but how can I get
the size (number of bytes) to copy by CopyMemory?
I know that vb .NET provides MemoryStream type, that could be useful in