[SOLVED] Implement QBalloonTip

[A Former User]

Hi, can't find a QBalloonTip class in the documentation. Can you please provide a link to that class in the documentation?

[kapsule]

Hi @Wieland,

The reference can be found at the following link. That's all I could find.

http://cep.xray.aps.anl.gov/software/qt4-x11-4.2.2-browser/d7/d10/class_q_balloon_tip.html

What I'm trying to find something like this.

http://stackoverflow.com/questions/23523211/qt-tooltip-with-arrow

Thanks.

[A Former User]

Ah! Found it in the Qt4.5.3 sources: http://qt4-x11.sourcearchive.com/documentation/4.5.3really4.5.2/src_2gui_2util_2qsystemtrayicon__p_8h_source.html . QBalloonTip isn't part of the public API but defined in the (private) internals of of QSystemTrayIcon: qsystemtrayicon_p.h. You said that you included qsystemtrayicon.h, but you need to include qsystemtrayicon_p.h to use QBalloonTip. Of course you're free to do so, but I can only discourage you from doing this.

[kapsule]

Hi @Wieland,

Thank you very much for the information. If it is a private source, you can not be used in a free app?

Thanks,

[A Former User]

You can use it! Not being part of the public API means that QBalloonTip could be changed or removed from the next Qt version without any warning. You can not rely on it.

[kapsule]

Hi @Wieland,

Thank you very much.

[kapsule]

Hello again @Wieland

One question. You know how you could implement this type of popup in QT?

https://www.dropbox.com/s/as4wc47dd78vxxk/cqj30.jpg?dl=0

Thanks,

[A Former User]

@kapsule Hi! The link is dead!

[kapsule]

@Wieland Hi,

Sorry, https://www.dropbox.com/s/zg7xm0hl5zjm8uv/cqj30.jpg?dl=0

[A Former User]

@kapsule The following should work: First create a new class (say: MyBallonTip) that inhertits QWidget. Override its void QWidget::paintEvent(QPaintEvent *event) so that it draws the desired geometry. Then set its flags to Qt::Window | Qt::WA_TranslucentBackground |Qt::FramelessWindowHint.
I have no time to test it right now. Please tell me if it works. See you later!

[A Former User]

@kapsule Hi again! I just tested what I suggested to you and this works:

myballoontip.h

#ifndef MYBALLOONTIP_H
#define MYBALLOONTIP_H

#include <QWidget>

class MyBalloonTip : public QWidget
{
    Q_OBJECT
public:
    explicit MyBalloonTip(QWidget *parent = 0);
    ~MyBalloonTip();

protected:
    void paintEvent(QPaintEvent*);
};

#endif // MYBALLOONTIP_H

myballontip.cpp

#include "myballoontip.h"

#include <QPaintEvent>
#include <QPainter>
#include <QPen>
#include <QBrush>


MyBalloonTip::MyBalloonTip(QWidget *parent) : QWidget(parent)
{
    this->setAttribute(Qt::WA_TranslucentBackground);
    this->setWindowFlags(Qt::Window |Qt::FramelessWindowHint);
    this->resize(200,100);
}

MyBalloonTip::~MyBalloonTip()
{
}


void MyBalloonTip::paintEvent(QPaintEvent*)
{
    QPainter painter(this);
    QPen pen( QColor("orange") );
    pen.setWidth(5);
    painter.setPen(pen);
    QBrush brush(QColor("lightblue"));
    painter.setBrush(brush);

    painter.drawRect(0,0,this->width(), this->height()-50);
    painter.drawRect(0,0,60,this->height());

    pen.setColor(QColor("black"));
    painter.setPen(pen);
    painter.drawText(20,30, "This is a tooltip!");
}

This is what the result looks like: https://drive.google.com/file/d/0B2D1UtsPfTx-YnhsVFE1QThuT0E/view?usp=sharing

Hope this can serve you as a starting point!
Cheers!

[kapsule]

Hi @Wieland

Perfect, thank you very much. Great job :)