WM_COPY
wParam = 0; /* not used, must be zero */
lParam = 0L; /* not used, must be zero */
An application sends a WM_COPY message to an edit control or combo box to copy the current selection to the clipboard in CF_TEXT format.
This message has no parameters.
The return value is nonzero if this message is sent to an edit control or a combo box.
This example sends an EM_SETSEL message to select the entire contents of an edit control. It then sends a WM_COPY message to copy the contents of the edit control to the clipboard.
SendDlgItemMessage
(hdlg, ID_MYEDITCONTROL, EM_SETSEL, 0, MAKELONG(0, -1)); SendDlgItemMessage(hdlg, ID_MYEDITCONTROL, WM_COPY, 0, 0L);