int endRow, int endCol) {
if (listeners != null) {
int size = listeners.size();
for (int i = 0; i < size; i++) {
ScreenListener target =
(ScreenListener)listeners.elementAt(i);
target.onScreenChanged(1,startRow,startCol,endRow,endCol);
}
}
dirtyScreen.setBounds(lenScreen,0,0,0);
}