+) for (x = 0 ; x < cxBuffer ; x++) BUFFER(x,y) = ' ' ;
// set caret to upper left corner
xCaret = 0 ; yCaret = 0 ; if (hwnd == GetFocus ()) SetCaretPos (xCaret * cxChar, yCaret * cyChar) ;
InvalidateRect (hwnd, NULL, TRUE) ; return 0 ; case WM_SETFOCUS: // create and show the caret CreateCaret (hwnd, NULL, cxChar, cyChar) ; SetCaretPos (xCaret * cxChar, yCaret * cyChar) ; ShowCaret (hwnd) ; return 0 ; case WM_KILLFOCUS: // hide and destroy the caret HideCaret (hwnd) ; DestroyCaret () ; return 0 ; case WM_KEYDOWN: switch (wParam) { case VK_HOME: xCaret = 0 ; break ; case VK_END: xCaret = cxBuffer - 1 ; break ; case VK_PRIOR: yCaret = 0 ; break ; case VK_NEXT: yCaret = cyBuffer - 1 ; break ; case VK_LEFT: xCaret = max (xCaret - 1, 0) ; break ; case VK_RIGHT: xCaret = min (xCaret + 1, cxBuffer - 1) ; break ; case VK_UP: yCaret = max (yCaret - 1, 0) ; break ; case VK_DOWN: yCaret = min (yCaret + 1, cyBuffer - 1) ; break ; case VK_DELETE: for (x = xCaret ; x < cxBuffer - 1 ; x++) BUFFER (x, yCaret) = BUFF |