QPushbutton movable Dynamically

Apeksha

Hi mrji,

How this resizeEvent is used? Can you please guide me?

Thanks in advance

mrjj

Hi
You must subclass the widget and implement your own version
like

void MYWidget::resizeEvent(QResizeEvent* event)
{
   MYWidget::resizeEvent(event); // make sure to call base
   // Your code here.
}

Apeksha

Hi,
I am using this resizeevent, but it is calling when binary runs.
void MainWindow::resizeEvent(QResizeEvent* event)
{
qDebug("ResizeEvent");
ui->pushButton->move(0,0);
QMainWindow::resizeEvent(event);
}

mrjj

@Apeksha

hi

but it is calling when binary runs.

Yes, is that not what you asked for ?
Events only works when app is running.

Do you mean in Designer ?

Apeksha

Hi ,

No, it should called when user wil resize the gui using mouse.

mrjj

@Apeksha

Sorry i do not understand what is wrong.

The resizeEvent will be called when user resize the running app.

Are you talking about inside Designer part, where you do widget design or where do you mean?

is your widget a Designer plugin ?

Apeksha

Hi,

You have said when resize event is used, it calls when user resize the running app.

So I have done when user user resizes the app, then button have to move its Y axis, so i have written my code as follows:
void MainWindow::resizeEvent(QResizeEvent* event)
{
qDebug("ResizeEvent");
ui->pushButton->move(0,0);
QMainWindow::resizeEvent(event);
}

But when my is running, without resizing app, button position is changing, my requirement is when user resizes app then only button position i.e, y-axis have to change, I hope you got my point

jsulm

@Apeksha Why do you position the button manually? Why not just use layouts?

Apeksha

I am having some labels,lineedits and buttons in my gui, my requirement is when user resizes gui, then button have to change position.

mrjj

@Apeksha
Ahhh, now i understand.
Well, there is no way to tell if done by system at start up or by the user.
But should it not do the same ?
Or only if size is smaller then the start size or ? what is the rule?

Apeksha

Hi,
There is no way to do as per my requirement, when user resizes app, then button has to change its position.

mrjj

Hi
resizeEvent(event) is the way to do it.
You just need to make sure then you do not react to the first resize events you get when app starts up.

Apeksha

Hi,

I am using resizeevent , but my button is moving initially when app runs, but it have to move when I resize my gui.
void MainWindow::resizeEvent(QResizeEvent* event)
{
qDebug("ResizeEvent");
ui->pushButton->move(0,0);
QMainWindow::resizeEvent(event);
}
this is the way I am doing, any correction?

mrjj

@Apeksha

That is fine. but you will also do on first resize
to avoid that, make some if statements
the event has both oldSize and newSixe to check

I cannot tell you what to write as i dont know
what the rules are to move the button.
At what sizes etc.

You can also use a timer to only allowed after say 10 secs to
avoid doing it on first resize.

Apeksha

Hi,

k, Assume my gui isof width and height 500,500, its resized to 400,400 then button has to change position, can u share sample code, I am not getting how to make

jsulm

@Apeksha Just add a boolean variable to your class and set it to false in the resizeEvent:

MainWindow::MainWindow(...): firstTime(true)
{
    ...
}
void MainWindow::resizeEvent(QResizeEvent* event)
{
    qDebug("ResizeEvent");
    if (!firstTime) {
        ui->pushButton->move(0,0);
    } else {
        firstTime = false;
    }
    QMainWindow::resizeEvent(event);
}

Apeksha

Hi jsulm,
Thank you so much, its very helpful.
Again If i maximize my gui to original size, how to make button position to original position?

jsulm

@Apeksha I don't know who you're going to position this button. What is the logic for positioning it?

Apeksha

@jsulm Same thing I was confused, Now If my gui is of 500,500(width,height), If i resized it to some 300,400 then button position will change. Now my doubt is if gui is maximized i.e to original size(500,500), how to move buttonto original position?

Taz742

@Apeksha
save coordinates