Adding pushbutton hides the widgets

[Dcqt]

I have a main window on which i added two widgets Display and Key in Horizontal layout.
The Display again has 3 widgets called Screen, Panel and Log in vertical layout.

now with all this setup when i run the program its displaying all well.

The problematic part is when i add some pushbuttons on my Panel.
adding pushbuttons like this does not give any problem

@
QPushButton *minMaxBtn=new QPushButton(PanelWin);
@

but if i create a layout on Panel and then add this push buttons , my key widgets is not displayed and Display it self consumed all of main window.

i could not understand whats the problem??

please help...

@
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
int x_c, y_c, w,h;

ServerWin = new QWidget;
MainWin = new QWidget;
DispWin = new QWidget;
PanelWin = new QWidget;
LogWin = new QWidget;
KeyWin = new QWidget;

QHBoxLayout *Mlayout = new QHBoxLayout;
QVBoxLayout *Dlayout = new QVBoxLayout;

setCentralWidget(ServerWin);
setMinimumSize(600,500);

setPalette(QPalette(QColor(0,0,128,255)));
setAutoFillBackground(true);

MainWin->setPalette(QPalette(QColor(0,255,255,255)));
MainWin->setAutoFillBackground(true);

Dlayout->addWidget(DispWin);
DispWin->setPalette(QPalette(QColor( 205,201,201,255)));
DispWin->setAutoFillBackground(true);
Dlayout->setSpacing(1);
Dlayout->setContentsMargins(0,0,0,0);

Dlayout->addWidget(PanelWin);
PanelWin->setPalette(QPalette(QColor( 139,137,137,255)));
PanelWin->setAutoFillBackground(true);

 QPushButton *minMaxBtn=new QPushButton;

QHBoxLayout *btnLayout= new QHBoxLayout;
btnLayout->addWidget(minMaxBtn,Qt::AlignLeft);
PanelWin->setLayout(btnLayout);

Dlayout->addWidget(LogWin);
LogWin->setPalette(QPalette(QColor( 248,248,255,255)));
LogWin->setAutoFillBackground(true);
MainWin->setLayout(Dlayout);

KeyWin->setPalette(QPalette(QColor( 245,245,245,255)));
KeyWin->setAutoFillBackground(true);

Mlayout->addWidget(MainWin);
Mlayout->setSpacing(2);
Mlayout->addWidget(KeyWin);
ServerWin->setLayout(Mlayout);

}

@

[Dcqt]

I have rechecked it .
The line causing problem is

@
btnLayout->addWidget(minMaxBtn,Qt::AlignLeft);
@

why setting alignment(right/left) on the widget causing other widgets to hide.
if i don't do alignment , all my buttons are coming left aligned which i don't want.

please help...

[NicuPopescu]

Hi,

have you seen that the addWidget's param list is:

bq. void QBoxLayout::addWidget ( QWidget * widget, int stretch = 0, Qt::Alignment alignment = 0 )

and you put an Qt::AlignLeft in the stretch factor's place?

correct is:

@btnLayout->addWidget(minMaxBtn,0,Qt::AlignLeft);@

or so :)

Cheers!

[Dcqt]

Yes, Thank you.