c ( HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam)
{
static HWND hwndEdit ;
int iSelect, iEnable ;
switch (message)
{
case WM_CREATE:
hwndEdit = CreateWindow (TEXT ("edit"), NULL,
WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL |
WS_BORDER | ES_LEFT | ES_MULTILINE |
ES_AUTOHSCROLL | ES_AUTOVSCROLL,
0, 0, 0, 0, hwnd, (HMENU) ID_EDIT,
((LPCREATESTRUCT) lParam)->hInstance, NULL) ;
return 0 ;
case WM_SETFOCUS:
SetFocus (hwndEdit) ;
return 0 ;
case WM_SIZE:
MoveWindow (hwndEdit, 0, 0, LOWORD (lParam), HIWORD (lParam), TRUE) ;
return 0 ;
case WM_INITMENUPOPUP:
if (lParam == 1)
{
EnableMenuItem ((HMENU) wParam, IDM_EDIT_UNDO,
SendMessage (hwndEdit, EM_CANUNDO, 0, 0)
MF_ENABLED : MF_GRAYED) ;
EnableMenuItem ((HMENU) wParam, IDM_EDIT_PASTE,
IsClipboardFormatAvailable (CF_TEXT)
MF_ENABLED : MF_GRAYED) ;
iSelect = SendMessage (hwndEdit, EM_GETSEL, 0, 0) ;
if (HIWORD (iSelect) == LOWORD (iSelect))
iEnable = MF_GRAYED ;
else
iEnable = MF_ENABLED ;
EnableMenuItem ((HMENU) wParam, IDM_EDIT_CUT, iEnable) ;
EnableMenuItem ((HMENU) wParam, IDM_EDIT_COPY, iEnable) ;
En |