说明：  Capturing window content can be done easily by using the ::BitBlt(..) from the screen DC however, this kind of implementation forces you to make sure that the window you want to capture is on top of the screen. In this project, to capture all the screen (Desktop), this technique is useful. Because it s not good for capturing covered windows, I capture windows with the ::PrintWindow(..) API. The project is a MFC-dialog based application, built with VC6. However, as mentioned above, all the implementations are inside the CaptureEx class, so actually MFC is being used just as a wrapper for the GUI the CaptureEx functionality is implemented with the Win32 API. In that way, Win32 applications can also benefit from the class.
(Capturing window content can be done easily by using the:: BitBlt (..) from the screen DC however, this kind of implementation forces you to make sure that the window you want to capture is on top of the screen. In this project, to capture all the screen (Desktop), this technique is useful. Because it s not good for capturing covered windows, I capture windows with the:: PrintWindow (..) API.The project is a MFC-dialog based application, built with VC6. However, as mentioned above, all the implementations are inside the CaptureEx class, so actually MFC is being used just as a wrapper for the GUI the CaptureEx functionality is implemented with the Win32 API. In that way, Win32 applications can also benefit from the class.)