QT 等待对话框/进度--

用QT的，加载的一张gif图片。记录下来以后免得忘记。

#ifndef DIALOG_H
#define DIALOG_H

#include <QDialog>
#include <QLabel>
#include<QPainter>
#include<QMovie>

class Dialog : public QDialog
{
    Q_OBJECT

public:
    explicit Dialog(QWidget *parent = 0);
    ~Dialog();

private:
    QMovie *movie;
    QLabel *label;
};

#endif // DIALOG_H

#include"dialog.h"

Dialog::Dialog(QWidget*parent):
    QDialog(parent)
{
    label = new QLabel(this);
    this->setFixedSize(200,200);
    setWindowOpacity(0.5);  //设置透明用；
    this->setWindowFlags(Qt::Dialog|Qt::CustomizeWindowHint);

    //取消对话框标题
    //this->setWindowFlags(Qt::Dialog|Qt::FramelessWindowHint);

    //取消对话框标题和边框
    //this->setAutoFillBackground(true);
    this->setContentsMargins(0,0,0,0);
    label->setContentsMargins(0,0,0,0);
    /*QPalettepalette;palette.setBrush(QPalette::Background,QBrush(QPixmap("E:/qml/imgdialog/loading.gif")));
    this->setPalette(palette)*/;
    movie = new QMovie("loading.gif");
    label->setMovie(movie);
    movie->start();
}
Dialog::~Dialog()
{
    delete label;
    delete movie;
}

效果：

http://blog.csdn.net/wangwei890702/article/details/8590392