Qt，充电信号显示，用Qlabel实现，简单

#include "dialog.h" #include "ui_dialog.h" Dialog::Dialog(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog) { ui->setupUi(this); //ps: label可以设置成信号样子，依次增高 label[0] = ui->label; label[1] = ui->label_2; label[2] = ui->label_3; label[3] = ui->label_4; label[4] = ui->label_5; for(int i=0;i<5;i++) label[i]->setVisible(false); //利用定时器，每200毫秒显示一格 mytimer = new QTimer(this); connect(mytimer,SIGNAL(timeout()),this,SLOT(work())); mytimer->start(200); jsq=0; } Dialog::~Dialog() { delete ui; } void Dialog::work() { if(jsq<5) { label[jsq++]->setVisible(true); } else if(jsq == 5) { jsq = 0; //这里可以设置，例如充电满一格了，jsq=1 for(int i = jsq;i<5;i++) { label[i]->setVisible(false); } } }