Even though my long title spoils quite a lot of my question, I'll try to be more specific here.
I have 5 VMWare instances that all have their own tasks to do. They are hosted on one same computer. But I need one program (that I'm actually writing, duh) to get informations and to send informations such as keystrokes and mouse clicks. But from what I've red so far, communication between programs is quite hard to achieve and I haven't found any way to send keystrokes to an unfocused or reduced VMWare windows. Plus I would need to send different and specific keystrokes to each of my 5 VMWare instances.
My program will starts itself each 5 tasks in each 5 windows. The order doesn't matter as long as each instances have its own tasklist. I would need a way to keep track on each window's identity so I don't send let's say window 4's keystrokes to window 5. I would also need to be able to check periodically if each VMWare's instances is doing its job. Additionnaly my VMWare's instances are all running in a win7 environnement.
Now that the whole situation is explained, I'll sum up the question I'm currently submitting. Is there any way for my C# program to keep track of 5 VMWare's instances' identities and both send keystrokes (+ mouseclicks) and get at least screenshots of what's displayed on each of them even though they are reduced or unfocused ?
Thanks a lot.
Is there a way to get
You have an incorrect understanding of how VMWare works. VMWare isn't "running in a window". VMWare is running in a virtual machine at a very low level in your computer. What you see as a "window" is merely a "viewer" that allows you to connect to the remote machine (even though it's running on the local computer). This "viewer" is an application similar to the remote desktop client, or a VNC client. As such, there is very limited interaction between the OS and the host OS and the applications running in the guests.
This means that your host OS doesn't know anything about the individual applications running inside the guest OS, and you can't see it's window handles, or control mouse or keyboard events. In fact, the VMWare drivers "capture" the hardware and steal these events directly from the hardware, so there is no real way for your application to simulate a human interacting with the Virtual machine window.
What you COULD do, and this would be a lot of work, is create "agents" on each of the virtual machines that would have access to the applications running on them. These agents could listen for events on the network, and you could send events to them to do what you want. However, as I said.. this is likely a lot of work.
This whole thing sounds kind of cheesy to begin with, like you're trying to do something the hard way, but since you haven't told us what you're ACTUALLY trying to do.. we can't suggest any better alternatives.