Creating an array of buttons

BorahAnshuman

hello friends

I am creating an array of buttons having 7 rows 7 colums..
now i trying to display first seven buttons in one row after which it goes to second row and display next seven button..and so on..

i have wrriten a code for this..its working but problem is that all the buttons are displayed in one row only..so if anyone suggest me to resolve that problem..

i am sending my code along with this..

@QWidget *centralWidget = new QWidget;
selectedDate=QDate::currentDate();
int count=1,i,j;
QPushButton *button[10][10];
QHBoxLayout *controlsLayout = new QHBoxLayout;
for(i=0;i<7;i++)
{
for(j=0;j<7;j++)
{
if(count<=42)
{

            button[i][j] = new QPushButton("p");

            button[i][j]->resize(40,40);

            button[i][j]->move(40*j, 40*i);

            button[i][j]->show();

            controlsLayout->addWidget(button[i][j]);

            centralWidget->setLayout(controlsLayout);

            setCentralWidget(centralWidget);

            count++;
        }

    }

}

}@

Aleskey78

all the buttons are displayed in one row only..
You add the buttons into "controlsLayout" which is "QHBoxLayout":http://doc.qt.nokia.com/latest/qhboxlayout.html
"The QHBoxLayout class lines up widgets horizontally..."

Aleskey78

Just use "QGridLayout":http://doc.qt.nokia.com/latest/qgridlayout.html instead of QHBoxLayout
@ QWidget *centralWidget = new QWidget;
int count=1,i,j;
QPushButton *button[10][10];
QGridLayout *controlsLayout = new QGridLayout;
for(i=0;i<7;i++)
{
for(j=0;j<7;j++)
{
if(count<=42)
{

                button[i][j] = new QPushButton("p");
                button[i][j]->resize(40,40);
                button[i][j]->move(40*j, 40*i);
                button[i][j]->show();
                controlsLayout->addWidget(button[i][j], i, j);
                count++;
            }
        }
    }
    centralWidget->setLayout(controlsLayout);
    setCentralWidget(centralWidget);@

BorahAnshuman

thanks Aleskey..its working now....the only thing is that ...hw can i decrease the space between each row...

As i had used all this in my code ...but its not working..

QGridLayout::setSpacing()
QGridLayout ::setHorizontalSpacing()
QGridLayout ::setVerticalSpacing()

space remain same...
with regards
Anshuman

Aleskey78

Maybe it will be better if you use no layouts at all:
@ button[i][j] = new QPushButton("p", centralWidget);

                button[i][j]->resize(40,40);

                button[i][j]->move(40*j, 40*i);

                button[i][j]->show();

                //controlsLayout->addWidget(button[i][j], i, j);

...
//centralWidget->setLayout(controlsLayout);
setCentralWidget(centralWidget);
@

andre

Obviously moving and resizing the buttons and putting them in a layout that manages their size and location is nonsense, but I think using a layout is the way to go. I'd rather dump the resize and the move. What happens if you use your application on a high-res display with a small dot pitch? You'll end up with tiny buttons, making the application unusable.

BorahAnshuman

yeh aleskey its work..but the thing is that i am using this array of buttons in creating my custom calender...so for that i hv to use layout..otherwise..nw if i try to use textbrowser below after all the button are set in rows and columns..hw can i manage to do it so..thats means the USERInterface design i want is similar to calenderWidget the only difference is that i use buttons for representing each cell..

with regards
Anshuman

Aleskey78

As i had used all this in my code …but its not working..
it is working, I have tested:

@QWidget *centralWidget = new QWidget;
int count=1,i,j;
QPushButton *button[10][10];
QGridLayout *controlsLayout = new QGridLayout;
for(i=0;i<7;i++)
{
for(j=0;j<7;j++)
{
if(count<=42)
{
button[i][j] = new QPushButton("p");
controlsLayout->addWidget(button[i][j], i, j);
count++;
}
}
}
controlsLayout->setHorizontalSpacing(0);
controlsLayout->setVerticalSpacing(0);
centralWidget->setLayout(controlsLayout);

    setCentralWidget(centralWidget);@

Aleskey78

Some strange things are happening here...
http://developer.qt.nokia.com/forums/viewthread/5366/
Pair programming? :)

vinb

Or 1 and the same person?

andre

I am getting the feeling: homework assignment.

vinb

Then they have to work together, much easier.