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int idFocus = 0;
int x, y;
……
case WM_KEYDOWN:
x = idFocus & 0xFF ;
y = idFocus >> 8 ;
switch (wParam)
{
case VK_UP: y-- ; break ;
case VK_DOWN: y++ ; break ;
case VK_LEFT: x-- ; break ;
case VK_RIGHT: x++ ; break ;
case VK_HOME: x = y = 0 ; break ;
case VK_END: x = y = DIVISIONS - 1 ; break ;
default: return 0 ;
}
x = (x + DIVISIONS) % DIVISIONS ;
y = (y + DIVISIONS) % DIVISIONS ;
idFocus = y << 8 | x ;
SetFocus (GetDlgItem (hwnd, idFocus)) ;
return 0 ;
……
for (x = 0 ; x < DIVISIONS ; x++)
for (y = 0 ; y < DIVISIONS ; y++)
hwndChild[x][y] = CreateWindow (szChildClass, NULL,
WS_CHILDWINDOW | WS_VISIBLE,
0, 0, 0, 0,
hwnd, (HMENU) (y << 8 | x),
(HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE),
NULL) ;