[Solved]Size of pushbuttons

[alfah]

eddy,

In the docs, I found,
@
int QSize::height () const @

Returns the height.

How do i call the function height()?? using obj of QSize??

This is my code. I jus need to find the height and width of any button
@
cellBut[i][j]=new QPushButton();
connect(cellBut[i][j],SIGNAL(clicked()),this,SLOT(onClickAction()));
@

Thank you

[Chuck Gao]

Just use QPushButton::size(), it's supper base is QWidget

[rokemoon]

What if like that
@cellBut[i][j]->size().height()@

[alfah]

chuck,

size function will return what values? With respect to my code, could u tell me how to go about it to find the size of any one of the pushbuttons?

Thank you

[rokemoon]

"size()":http://doc.qt.nokia.com/latest/qwidget.html#size-prop return "QSize":http://doc.qt.nokia.com/latest/qsize.html object, where you can call "height()":http://doc.qt.nokia.com/latest/qsize.html#height

[alfah]

rokemoon

:D I got it :D Thank you!!!

Jus one more questions, the values i got was 480 n 640. could you tell me, wats the unit? i mean, mm?? px?? or wat???

Thank you

[rokemoon]

the value in px.
If you solved your problem please mark title of the post like this
[SOLVED] Size of pushbuttions

[Chuck Gao]

I'm sorry alfah, i can not understand your English clearlly. But, the size() function will return the widget's size(as we know QSize), as Eddy mentioned before, i think you need know some concept of geometry/bounding-rect.

[quote author="alfah" date="1311752432"]could u tell me how to go about it to find the size of any one of the pushbuttons?[/quote]

what do you mean alfah ? Can you give us a more detailed description ?

[Chuck Gao]

ok, you solve it. Good luck :D

[alfah]

Hey everybody,

im sorry to restart this thread, but the following code gives me values 480 and 640
@
cellBut[i][j]=new QPushButton();
connect(cellBut[i][j],SIGNAL(clicked()),this,SLOT(onClickAction()));
ht=cellBut[0][0]->size().height();
wd=cellBut[0][0]->size().width();
@

by no means this is the size of the buttons, think its the screen size!!!!

I need pushbutton ht and width

Thank you

[Eddy]

did you use an iteration like :
@for(i = 0, i < max , ++i){
for(j=0, j<max, ++j){
//do your stuff
}
}@

[alfah]

eddy,

Yup i did,
@
for(int i=0;i<6;i++)
{
for(int j=0;j<7;j++)
{

       cellBut[i][j]=new QPushButton();
       connect(cellBut[i][j],SIGNAL(clicked()),this,SLOT(onClickAction()));
       ht=cellBut[i][j]->size().height();
       wd=cellBut[i][j]->size().width();

    }
}

@

ht and wd gives me 640 and 480 respectivvely. which i think is the screen size and not individual button size.
:(

[Chuck Gao]

I think the problem is, you didn't set the pushbutton's size implicit. And you didn't use any layout management. So the value is not you want.

[Eddy]

what Chuck is saying is that you didn't use a parent or add them to a layout. That way they get a size.

have a look at this quick and dirty example:

@ int rows = 6;//this is convenient in case you want to alter the numbers
int cols = 7;
QPushButton* cellBut[rows][cols] ;

for(int i=0;i<rows;i++) {
    for(int j=0;j<cols;j++)     {
        cellBut[i][j]=new QPushButton(this);    //remark the use of a parent here
        //        connect(cellBut[i][j],SIGNAL(clicked()),this,SLOT(onClickAction()));//better way see below

    }
}
qDebug() << cellBut[0][0]->size().height();
qDebug() << cellBut[0][0]->size().width();@

you might have a look at "QSignalMapper":http://doc.qt.nokia.com/4.7/qsignalmapper.html#details. There is a nice example of what you try to achieve.

[alfah]

chuck,

Yea, I have not set size of the pushbutton, But since it has been created, why doesn it give me the current size of the button. That it should do right?

:( Is it necessary to specify the size of the button while creating them?

Thank you

alfah

[Eddy]

in case you missed my topic :
have a look at my example. also the QSignalMapper link.

[alfah]

:) Thanks Eddy,

Got tht one, size now is 100 and 30 which is kinda resonable :)

alfah

[Eddy]

You're welcome. I'm glad you made it.

And did you have a look at the QSignalMapper example?
This will make your signal slots handling much easier.

[alfah]

:)

I checked that, :) its a lot more easier.

Thank you :) :)

[Chuck Gao]

Anyway, Enjoy Qt alfah :D