A window should use the clipboard when cutting, copying, or pasting data. A window places data on the clipboard for cut and copy operations and retrieves data from the clipboard for paste operations. The following sections describe these operations and related issues.
To place data on or retrieve data from the clipboard, a window must first open the clipboard by using the OpenClipboard function. Only one window can have the clipboard open at a time. To find out which window has the clipboard open, call the GetOpenClipboardWindow function. When it has finished, the window must close the clipboard by calling the CloseClipboard function.