Don't need to talk about interrupt ( Yuck!) in your application, you need to handle the CTRL-V message ; either as an acceleration, which should already be in the accelerator table of the resources, and with the menu entry. the accelerator and menu will have the same ID, for example IDM_EDIT_PASTE, and your code, in the CWnd derived class that you want to receive the message, you will have to add something like ( manually or with the wizard ):
// in the message map section
ON_COMMAND(ID_EDIT_PASTE, OnEditPaste)
...
void CMainFrame::OnEditPaste()
{
// here you do your clipboard operations.
}