An application sends the LBN_DBLCLK notification message when the user double-clicks a string in a list box. The parent window of the list box receives this notification message through the WM_COMMAND message.
LBN_DBLCLK
idListBox = (int) LOWORD(wParam); // identifier of list box
hwndListBox = (HWND) lParam; // handle to list box
Only a list box that has the LBS_NOTIFY style will send this notification message.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
List Boxes Overview, List Box Messages, LBN_SELCHANGE, WM_COMMAND