QStackedWidget使用整理

需求1做一个主窗口中有一个视频区域，平时放视频，特定条件下显示图片

stackWidget = new QStackedWidget((QWidget *)parent_);

QWidget *w1,*w2;

w1 = new QWidget();

w1->setObjectName("video");

w2 = new QWidget();

w1->setObjectName("linemap");

stackWidget->setObjectName("stackWidget");

stackWidget->addWidget(w1);

stackWidget->addWidget(w2);

stackWidget->setGeometry(QRect(item->x(), item->y(), item->w(), item->h()));

第一个页面放视频，第二个页面显示图片

lineMap = w2;

Qt::WindowFlags flags = 0;//this->windowFlags();

flags |= Qt::CustomizeWindowHint;

flags |= Qt::FramelessWindowHint;

lineMap->setWindowFlags(flags); //不是必需

lineMap->setAutoFillBackground(true);//必需要加

设置QWidget显示背景图

QPixmap pixmap(CONFIG->resource_path + QString("line%1.png").arg(id));

QPalette palette;

palette.setBrush(lineMap->backgroundRole(), QBrush(pixmap));

lineMap->setPalette(palette);

需求2 全屏来回切换显示

stackedWidget = new QStackedWidget(NULL);

atsAWidget = new QWidget(NULL);

atsBWidget = new QWidget(NULL);

atsCWidget = new QWidget(NULL);

stackedWidget->addWidget(atsAWidget);

stackedWidget->addWidget(atsBWidget);

stackedWidget->addWidget(atsCWidget);

stackedWidget->setCurrentIndex(0);

Qt::WindowFlags flags = 0;//this->windowFlags();

flags |= Qt::CustomizeWindowHint;

flags |= Qt::FramelessWindowHint;

flags |= Qt::Window;

atsAWidget->setWindowFlags(flags);

atsBWidget->setWindowFlags(flags);

atsCWidget->setWindowFlags(flags);

atsAWidget->setGeometry(0,0,1920,1080);

atsBWidget->setGeometry(0,0,1920,1080);

atsCWidget->setGeometry(0,0,1920,1080);

QVBoxLayout *layout = new QVBoxLayout();

layout->addWidget(stackedWidget);

this->setLayout(layout);

stackedWidget->setObjectName("stackedWidget");

atsAWidget->setObjectName("atsAWidget");

atsBWidget->setObjectName("atsBWidget");

atsCWidget->setObjectName("atsCWidget");

atsAWidget->showFullScreen();//全屏显示，3个里只能选一个先，显示哪个，

到要切哪个页全屏时

stackedWidget->setCurrentIndex(2);

atsCWidget->showFullScreen();

实际效果感觉有明显的切换痕迹，不知如何优化