QPushbutton movable Dynamically

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

mrjj

@Apeksha

you can just store its old position ?

QRect oldpos; // int the class

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

jsulm

@Apeksha I still don't understand why you position this button manually...

Apeksha

@mrjj

QRect oldpos; // int the class

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

Here we are saving old geometry, again where we set this geometry?

Taz742

@Apeksha

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

Apeksha

@Taz742

void MainWindow::resizeEvent(QResizeEvent* event)
{
oldpos=ui->pushButton->geometry();
int oldx=oldpos.x();
int oldy=oldpos.y();
qDebug()<<"oldpos x is"<<oldx<<"oldpos y is:"<<oldy;
if (!firstTime) {
ui->pushButton->move(50,100);
}
else {
firstTime = false;
ui->pushButton->move(oldx,oldy);
}

    QMainWindow::resizeEvent(event);

}

But it's not working, button is not moving to old position again when gui is maximized.

mrjj

@Apeksha said in QPushbutton movable Dynamically:

But it's not working, button is not moving to old position again when gui is maximized.

But that is impossible for it to know.
You must check for that situations then. and then call the
ui->pushButton->move(oldx,oldy);

you can use isMaximized()

I wish i understood why you cant just use a layout :)

Apeksha

@mrjj

My code is wrong?

what conditions I have to use? Can you please guide me?