Problem with QMessagebox with IOS.. Application becomes unresponsive

[TheCrowKaka]

@mrjj My IOS version is 11.4.1

[mrjj]

@TheCrowKaka
HI
Well adding a new connection will not override the old one.
You could use disconnect.

However, i was more thinking of
manually adding a new action from code and be using QueuedConnection to test
if that actually works then.
I read the link as he manually connected the actions and then it worked.

[TheCrowKaka]

@mrjj manually adding a new action and using QueuedConnection to test also did not work.

[mrjj]

@TheCrowKaka
Ok. it sounded like the others got it working that way. but maybe not in all cases.
It sounds like its fixed in 5.9.4
What Qt are you on ?

[TheCrowKaka]

@mrjj I am using Qt5.10.1

[TheCrowKaka]

@mrjj I dont see a solution to this problem. I was trying to solve it by creating a custom dialog box with buttons for asking user input.
Ideally, i should have a window that is translucent and a opaque frame with buttons and a label.
Do you think this will be feasible?

[mrjj]

@TheCrowKaka
Would it be possible to test with 5.9.4 ?

Well the issues seems to be related to exec()
so a new dialog might not work better than QMessageBox
however , its worth a shot.

[TheCrowKaka]

@mrjj if I execute the dialog with exec in a static function, that seems to work.

Invoking the dialog this way works.

    int ret = iosmsgbox::showmessagebox(tr("Do you really want to delete the block?"),QString(),tr("Yes"),tr("No"));

The dialog header...

#ifndef IOSMSGBOX_H
#define IOSMSGBOX_H

#include <QDialog>

namespace Ui {
class iosmsgbox;
}

class iosmsgbox : public QDialog
{
    Q_OBJECT

public:
    explicit iosmsgbox(const QString &message,const QString &btn1txt,const QString &btn2txt,const QString &btn3txt,QWidget *parent = 0);
    ~iosmsgbox();
    static int showmessagebox(const QString &message,const QString &btn1txt,const QString &btn2txt,const QString &btn3txt,QWidget *parent = 0);

private slots:
    void on_btn_1_clicked();

    void on_btn_2_clicked();

    void on_btn_3_clicked();

private:
    Ui::iosmsgbox *ui;
    int selvalue;
};

#endif // IOSMSGBOX_H

The dialog cpp.

#include "iosmsgbox.h"
#include "ui_iosmsgbox.h"

iosmsgbox::iosmsgbox(const QString &message,const QString &btn1txt,const QString &btn2txt,const QString &btn3txt,QWidget *parent) :
    QDialog(parent),
    ui(new Ui::iosmsgbox)
{
    ui->setupUi(this);
    
    selvalue=0;
    ui->btn_1->setVisible(!btn1txt.isEmpty());
    ui->btn_1->setText(btn1txt);
    ui->btn_2->setVisible(!btn2txt.isEmpty());
    ui->btn_2->setText(btn2txt);
    ui->btn_3->setVisible(!btn3txt.isEmpty());
    ui->btn_3->setText(btn3txt);
}

iosmsgbox::~iosmsgbox()
{
    delete ui;
}

int iosmsgbox::showmessagebox(const QString &message, const QString &btn1txt, const QString &btn2txt, const QString &btn3txt, QWidget *parent)
{
    int returnvalue;
    iosmsgbox *mymsg = new iosmsgbox(message,btn1txt,btn2txt,btn3txt,parent);
    mymsg->exec();
    returnvalue=mymsg->selvalue;
    mymsg->close();
    delete mymsg;
    return returnvalue;
}

void iosmsgbox::on_btn_1_clicked()
{
    selvalue=1;
    this->hide();
}

void iosmsgbox::on_btn_2_clicked()
{
    selvalue=2;
    this->hide();
}

void iosmsgbox::on_btn_3_clicked()
{
    selvalue=3;
    this->hide();
}

Now I am confused on how to make the background translucent and make just the buttons housed in the frame visible properly.

[mrjj]

Ok, so its not directly related to exec().
Good test then.
One note. i dont think you have to new it. since exec is blocking.
...
iosmsgbox mymsg(message,btn1txt,btn2txt,btn3txt,parent);
mymsg.exec();
returnvalue=mymsg.selvalue;
mymsg.close();

should work just as well.

• background translucent

Is the normal messagebox translucent ? or why you want this ?

• buttons housed in the frame visible properly.
  You mean dialog is too small or why are they not ok ?

[TheCrowKaka]

@mrjj
The Transluscent background and visible frame is only about trying to give the look similar to the messagebox.
But this workaround works for me.