C++ Q3PtrList::clear方法代码示例

void Q3SocketPrivate::close()
{
    closeSocket();
    wsize = 0;
    rba.clear(); wba.clear();
    windex = 0;
}

// -----------------------------------------------------------
void QucsApp::slotCursorRight()
{
  if(!editText->isHidden()) return;  // for edit of component property ?

  Q3PtrList<Element> movingElements;
  Schematic *Doc = (Schematic*)DocumentTab->currentPage();
  int markerCount = Doc->copySelectedElements(&movingElements);

  if((movingElements.count() - markerCount) < 1) {
    if(markerCount > 0) {  // only move marker if nothing else selected
      Doc->markerLeftRight(false, &movingElements);
      movingElements.clear();
    }
    else {
      if(Doc->scrollRight(-Doc->horizontalScrollBar()->lineStep()))
        Doc->scrollBy(Doc->horizontalScrollBar()->lineStep(), 0);
    }

    Doc->viewport()->update();
    view->drawn = false;
    return;
  }

  view->moveElements(&movingElements, Doc->GridX, 0);  // move "GridX" to right
  view->MAx3 = 1;  // sign for moved elements
  view->endElementMoving(Doc, &movingElements);
}

// -----------------------------------------------------------
void QucsApp::slotCursorDown()
{
  if(!editText->isHidden()) {  // for edit of component property ?
    if(view->MAx3 == 0) return;  // edit component namen ?
    Component *pc = (Component*)view->focusElement;
    Property *pp = pc->Props.at(view->MAx3-1);  // current property
    int Pos = pp->Description.find('[');
    if(Pos < 0) return;  // no selection list ?
    Pos = pp->Description.find(editText->text(), Pos); // current list item
    if(Pos < 0) return;  // should never happen
    Pos = pp->Description.find(',', Pos);
    if(Pos < 0) return;  // was last item ?
    Pos++;
    if(pp->Description.at(Pos) == ' ') Pos++; // remove leading space
    int End = pp->Description.find(',', Pos);
    if(End < 0) {  // is last item ?
      End = pp->Description.find(']', Pos);
      if(End < 0) return;  // should never happen
    }
    editText->setText(pp->Description.mid(Pos, End-Pos));
    editText->selectAll();
    return;
  }

  Q3PtrList<Element> movingElements;
  Schematic *Doc = (Schematic*)DocumentTab->currentPage();
  int markerCount = Doc->copySelectedElements(&movingElements);

  if((movingElements.count() - markerCount) < 1) {
    if(markerCount > 0) {  // only move marker if nothing else selected
      Doc->markerUpDown(false, &movingElements);
      movingElements.clear();
    }
    else {
      if(Doc->scrollDown(-Doc->verticalScrollBar()->lineStep()))
        Doc->scrollBy(0, Doc->verticalScrollBar()->lineStep());
    }

    Doc->viewport()->update();
    view->drawn = false;
    return;
  }

  view->moveElements(&movingElements, 0, Doc->GridY);  // move "GridY" down
  view->MAx3 = 1;  // sign for moved elements
  view->endElementMoving(Doc, &movingElements);
}

void RuleStack::top( Q3PtrList<KScoringRule> &l )
{
  l.clear();
  KScoringManager::ScoringRuleList *l1 = stack.top();
  l = *l1;
}

bool BrowserNode::delete_internal(QString & warning) {
  if (deletedp())
    return TRUE;
  
  if (!is_writable() && !root_permission() && !is_from_lib()) {
    warning += "\n    " + TR("%1 is read-only", full_name());
    return FALSE;
  }
  
  static Q3PtrList<BrowserNode> targetof;
  static bool made = FALSE;
  bool made_here;
  
  if (!made) {
    made = TRUE;
    made_here = TRUE;
    referenced_by(targetof, TRUE);
  }
  else
    made_here = FALSE;
    
  bool ro = FALSE;
  
  if (!root_permission()) {
    Q3PtrListIterator<BrowserNode> it(targetof);
    BrowserNode * r;
    
    while ((r = it.current()) != 0) {
      if (!r->is_writable() && !r->is_from_lib()) {
	ro = TRUE;
	warning += "\n    ";
	switch (r->get_type()) {
	case UmlComponent:
	  warning += TR("%1 referenced by the read-only component %2", full_name(), r->full_name());
	  break;
	case UmlArtifact:
	  warning += TR("%1 referenced by the read-only artifact %2", full_name(), r->full_name());
	  break;
	default:
	  warning += TR("%1 is the target of the read-only relation %2", full_name(), r->full_name());
	  break;
	}
      }
      
      ++it;
    }
  }
  
  if (made_here) {
    made = FALSE;
    targetof.clear();
  }
  
  if (ro)
    return FALSE;
  
  // sub elts
  Q3ListViewItem * child;
  bool ok = TRUE;
  
  for (child = firstChild(); child != 0; child = child->nextSibling())
    ok &= ((BrowserNode *) child)->delete_internal(warning);
  
  if (ok) {
    is_deleted = TRUE;
    if (is_marked) {
      marked_list.removeRef(this);
      is_marked = FALSE;
    }
    get_data()->delete_it();
    repaint();
    package_modified();
  }

  return ok;
}