實(shí)現(xiàn)原理

?顯示
? 定時(shí)器啟動(dòng)，右下角緩慢彈出，逐漸改變位置

駐留
? 讓界面停留一定的時(shí)間，時(shí)間過(guò)后自動(dòng)關(guān)閉。

退出
可以直接點(diǎn)擊關(guān)閉退出，也可以采用改變透明度的形式模糊退出。

#ifndef _QTOOLTIPS_ #define _QTOOLTIPS_ #include <QTimer> #include <QDialog> #include "ui_QToolTips.h"class QToolTips:public QDialog {Q_OBJECTpublic:QToolTips(QWidget *parent = 0);~QToolTips();void showMessage(const char* str);private slots:void onMove();void onStay();-void onClose();private:Ui::QToolTips ui;QTimer * m_pShowTimer;QTimer * m_pStayTimer;QTimer * m_pCloseTimer;QPoint m_point;int m_nDesktopHeight;double m_dTransparent;};#endif
#include "QToolTips.h" #include <QtWidgets/QApplication> #include <QDesktopWidget>QToolTips::QToolTips(QWidget *parent /*= 0*/): QDialog(parent) {setWindowFlags(Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);ui.setupUi(this);m_nDesktopHeight = QApplication::desktop()->height();m_dTransparent = 1.0;m_pShowTimer = new QTimer(this);m_pStayTimer = new QTimer(this);m_pCloseTimer = new QTimer(this);connect(m_pShowTimer, SIGNAL(timeout()), this, SLOT(onMove()));connect(m_pStayTimer, SIGNAL(timeout()), this, SLOT(onStay()));connect(m_pCloseTimer, SIGNAL(timeout()), this, SLOT(onClose()));}QToolTips::~QToolTips() {}void QToolTips::showMessage(const char* str) {ui.m_label->setStyleSheet("background-color:rgb(255,210,200);font:60px;color:blue");ui.m_label->setText(str);QRect rect = QApplication::desktop()->availableGeometry();m_point.setX(rect.width() - width());m_point.setY(rect.height() - height());move(m_point.x(), m_point.y());m_pShowTimer->start(5);}void QToolTips::onMove() {m_nDesktopHeight--;move(m_point.x(), m_nDesktopHeight);if (m_nDesktopHeight <= m_point.y()){m_pShowTimer->stop();m_pStayTimer->start(5000);}}void QToolTips::onStay() {m_pStayTimer->stop();m_pCloseTimer->start(100);}void QToolTips::onClose() {m_dTransparent -= 0.1;if (m_dTransparent <= 0.0){m_pCloseTimer->stop();close();}else{setWindowOpacity(m_dTransparent);}}

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