C++ 如何删除选定的图形项目组?
在具有多个组的场景中,如何删除选定的项目组? 当我尝试删除组时,它只删除上次创建的组C++ 如何删除选定的图形项目组?,c++,qt,qt5,qgraphicsscene,qgraphicsitem,C++,Qt,Qt5,Qgraphicsscene,Qgraphicsitem,在具有多个组的场景中,如何删除选定的项目组? 当我尝试删除组时,它只删除上次创建的组 #include "graphicscene.h" QGraphicsItemGroup *mpGroup ; void GraphicScene::keyReleaseEvent(QKeyEvent * keyEvent) { if( keyEvent->key() == Qt::Key_F1) { qDebug() << "group created";
#include "graphicscene.h"
QGraphicsItemGroup *mpGroup ;
void GraphicScene::keyReleaseEvent(QKeyEvent * keyEvent)
{
if( keyEvent->key() == Qt::Key_F1) {
qDebug() << "group created";
mpGroup = createItemGroup(selectedItems());
mpGroup->setFlags(QGraphicsItem::ItemIsSelectable | QGraphicsItem::ItemIsMovable);
qDebug() << "Group Address "<< mpGroup ;
} else if( keyEvent->key() == Qt::Key_F2) {
qDebug() << "Group Before delete selected item"<< selectedItems() ;
if(mpGroup != NULL) {
destroyItemGroup(mpGroup);
qDebug() << "Group Deleted "<< mpGroup ;
}
}
}
#包括“graphicsene.h”
QGraphicsSiteMgroup*mpGroup;
void GraphicsScene::keyReleaseEvent(QKeyEvent*keyEvent)
{
如果(keyEvent->key()==Qt::key\u F1){
qDebug()设置标志(QGraphicsItem::ItemIsSelectable | QGraphicsItem::ItemIsMovable);
qDebug()一种可能的解决方案是使用type()
验证它是否为QGraphicsItemGroup
void GraphicScene::keyReleaseEvent(QKeyEvent * keyEvent){
if( keyEvent->key() == Qt::Key_F1)
{
qDebug() << "group created";
QGraphicsItemGroup *group = createItemGroup(selectedItems());
group->setFlags(QGraphicsItem::ItemIsSelectable |
QGraphicsItem::ItemIsMovable);
qDebug() << "Group Address "<< group ;
}
else if( keyEvent->key() == Qt::Key_F2)
{
qDebug() << "Group Before delete selected item"<< selectedItems() ;
for(QGraphicsItem *item: selectedItems()){
if(item->type() == QGraphicsItemGroup::Type)
{
QGraphicsItemGroup *group = qgraphicsitem_cast<QGraphicsItemGroup *>(item);
destroyItemGroup(group);
qDebug() << "Group Deleted "<< group ;
}
}
}
}
void graphicsecene::keyReleaseEvent(QKeyEvent*keyEvent){
如果(keyEvent->key()==Qt::key\u F1)
{
qDebug()设置标志(QGraphicsItem::ItemIsSelectable |
QGraphicsItem::ItemIsMovable);
qDebug()谢谢…实际上我必须删除所选组…它删除列表中的最后一个…@Sagar重试