Qt随笔

1）设置widget屏幕居中

 

QDesktopWidget* desktop = QApplication::desktop();
move((desktop->width() - this->width())/2, (desktop->height() - this->height())/2); 

 

 

2）Print screen

 

QImage image(768,1024,QImage::Format_Indexed8);

memcpy(image.bits(),QScreen::instance()->base(), 768 * 1024);

QString fileToSave = QString("/resource/shot_");

fileToSave.append(QString::number(m_fileNum));

fileToSave.append(".png");

if(image.save(fileToSave,"PNG"))

     qDebug()<<"Image saved :"<<fileToSave;

m_fileNum++;