C++ Screen Capture

I need a program written in C++ that can take screenshots in a set interval and upload them to a server. Must support Windows and direct3d/opengl. ## Deliverables The main program is being developed in QT and is written in C++. The code from this program must be able to be used in the program. As stated, I need the program to take screenshots in MS Windows and also support direct3d/opengl. The screenshots will be uploaded to a remote server by the same application that takes the screenshots. Any questions please ask.