Layout doesn't align in the center

Ninawe

Hi,
I have a problem with my layouts. It seems they are aligning always to the right bottom corner instead of being equally spaced. I would like to have both layouts to have 3 pixels spacing to the borders and between each other which should be accomplished by how I chose the sizes of the Widgets. But instead it aligns them on the bottom right corner.
As you can see I tried different ways of Qt::AlignCenter, to no avail.
Can somebody please help me?
This is my code for the mainwindow.cpp.

@
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent),
m_QFrame(0)
{
setStyleSheet("background-color: qlineargradient(spread:pad, x1:0.446, y1:0, x2:0.5, y2:1, stop:0 rgba(47, 149, 192, 255), stop:1 rgba(12, 87, 126, 255));");
setFixedSize(800,480);
QWidget *w = new QWidget( this );
setCentralWidget(w);

QVBoxLayout* mainLayout = new QVBoxLayout(w);

// complete header containing HeaderLogo and overlay
QFrame* headerFrame = new QFrame(this);
headerFrame->setFixedHeight(60);
headerFrame->setFixedWidth(800);
headerFrame->setStyleSheet("background-color: rgba(255, 255, 255,50);");

QFrame* overlay = new QFrame(headerFrame);
overlay->setFixedHeight(50);
overlay->setFixedWidth(671);
overlay->setStyleSheet("background-color: rgba(255, 255, 255, 100); border-radius: 2px;");

//Layout
QHBoxLayout* headerFrameLayout = new QHBoxLayout(headerFrame);

//headerLogo
QLabel* headerLogo = new QLabel(headerFrame);
headerLogo->setFixedSize(120,50);
headerLogo->setStyleSheet("background-color: rgba(255, 255, 255, 100); border-radius: 2px;");

headerFrameLayout->setAlignment(headerLogo,Qt::AlignCenter);
headerFrameLayout->setAlignment(overlay,Qt::AlignCenter);
headerFrameLayout->addWidget(headerLogo);
headerFrameLayout->addWidget(overlay);
headerFrame->setLayout(headerFrameLayout);

QFrame* bodyFrame = new QFrame(this);
bodyFrame->setFixedSize(790,411);
bodyFrame->setStyleSheet("background-color: rgba(255, 255, 255,30); border-radius: 2px;");

//header and body
mainLayout->setAlignment(Qt::AlignCenter);
mainLayout->addWidget(headerFrame);
mainLayout->addWidget(bodyFrame);

// Set the grid layout as a main layout
w->setLayout(mainLayout);

}@
edit:
I got a little bit closer to where I want to be: I added

@ mainWidget->resize(800,480),
setFixedSize(sizeHint());@

so at least the mainLayout is aligning nicely now. But the Layout inside the headerframe still isn't...

Charlie_Hdz

If you're using Qt Creator, I suggest align your widgets by Qt Creator Designer.

Qt Documentation might help you.

hsierra00

Hi
this post may be help you to resolve the problem http://qt-project.org/forums/viewthread/23292

mranger90

The problem is the fixed height on headerFrame. The objects inside the layout aren't really at the bottom right, it just looks that way.