How to setBottomWidget insteads of setCentralWidget? and color? (solved)

[SGaist]

Do you mean "setText":http://qt-project.org/doc/qt-5/qlabel.html#text-prop ?

[houmingc]

i need a scrolling text.
I achieve by pTicker->setText(” hello “);

How to put pTicker onto a textlabel?

[SGaist]

Ok, you don't need a QLabel, just put your pTicker directly at the right place

[houmingc]

How to put pTicker at the right place?
i putting it using QMainWindow::setcentralWidget(pTicker);

I tried QToolbar *fontToolBar= new QToolBar(tr("Font");
fontToolBar->setObjectName("FontToolBar");
fontToolBar->addWidget(pTicker);
not successful.

I tried QLabel *bannerLabel=new QLabel(pTicker);
bannerLabel->setAlignment(Qt::AlignVCenter);
It works, but no matter setting AlignHCenter or AlignBaseline or other alignment, it is fixes to the top left.

Thanks for the good deeds, promise to pass it around.

[SGaist]

[quote author="houmingc" date="1414852099"]
I tried
@QToolbar *fontToolBar= new QToolBar(tr("Font");
fontToolBar->setObjectName("FontToolBar");
fontToolBar->addWidget(pTicker);
@
not successful.
[/quote]
What do you mean by not successful ?

[quote author="houmingc" date="1414852099"]
I tried
@
QLabel *bannerLabel=new QLabel(pTicker);
bannerLabel->setAlignment(Qt::AlignVCenter);
@
It works, but no matter setting AlignHCenter or AlignBaseline or other alignment, it is fixes to the top left.
[/quote]

That's normal, you are telling QLabel to align it's content that way. However bannerLabel doesn't have any content. You just made it a child of pTicker.

[houmingc]

How to set it to scroll at the bottom of the dialog box

[houmingc]

i need the code urgently, please help.

[SGaist]

At the bottom of a QDialog ? You can use a QVBoxLayout

[houmingc]

how to create multiple instances of this ticker

[SGaist]

The same way you create multiple instances of any other classes in C++

[houmingc]

My objective is to get a scrolling text below the Main Window dialog box. Below is my code, implementing QVBoxLayout, nothing is change, please give some more advice. Thanks

Ticker* pTicker = new Ticker(this);
pTicker->setText("  I love u but u love me not     ");
QMainWindow::setCentralWidget(pTicker);
QVBoxLayout *vbox=new QVBoxLayout(this);
vbox->addWidget(pTicker);

QPalette pal=palette();
pal.setColor(QPalette::Background,Qt::green);
setPalette(pal);
setAutoFillBackground(true);

[houmingc]

My objective is to get a scrolling text below the Main Window dialog box. Below is my code, implementing QVBoxLayout, nothing is change, please give some more advice. Thanks

Ticker* pTicker = new Ticker(this);

pTicker->setText("  I love u but u love me not     ");

QMainWindow::setCentralWidget(pTicker);

QVBoxLayout *vbox=new QVBoxLayout(this);

vbox->addWidget(pTicker);

QPalette pal=palette();

pal.setColor(QPalette::Background,Qt::green);

setPalette(pal);

setAutoFillBackground(true);

[IamSumit]

Hii.

You can take some referance from the following link for scrolling the text.
"here":http://stackoverflow.com/questions/12159443/qt-scrolling-the-text-in-qwidget

[houmingc]

I added cpp and header file to my added class.
Compile successfully, created the object successfully
When i build and run the program, other than the mainwindow, no text appear and scrolling.

I went into below site. there is a zip file but i can't download, i have feedback to the administrator for months and there isn't any progress. Please help. Did i miss anything. it seems i am getting near to the answer.
http://www.qtcentre.org/threads/24712-Marquee-QLabel

[SGaist]

[quote author="houmingc" date="1415239854"]My objective is to get a scrolling text below the Main Window dialog box. Below is my code, implementing QVBoxLayout, nothing is change, please give some more advice. Thanks
@
Ticker* pTicker = new Ticker(this);

pTicker->setText("  I love u but u love me not     ");

QMainWindow::setCentralWidget(pTicker);

QVBoxLayout *vbox=new QVBoxLayout(this);

vbox->addWidget(pTicker);

QPalette pal=palette();

pal.setColor(QPalette::Background,Qt::green);

setPalette(pal);

setAutoFillBackground(true);

@
[/quote]

You are setting pTicker as central widget, then you are setting a QVBoxLayout on your MainWindow which will fail since QMainWindow already has a layout.

So all in all, if you want your pTicker at the bottom in your QMainWindow centralWidget, then put in on the bottom of a widget that you will set as central widget.

[houmingc]

Dear sir, i commented out setCentrealWidget, still not working.

QLayout: Attempting to add QLayout "" to MainWindow "MainWindow", which already has a layout
QWidget::setLayout: Attempting to set QLayout "" on MainWindow "MainWindow", which already has a layout

Ticker* pTicker = new Ticker(this);
pTicker->setText("  I love u but u love me not     ");
QLineEdit *lineEdit =new QLineEdit;
//QMainWindow::setCentralWidget(pTicker);
QVBoxLayout *vbox=new QVBoxLayout(this);
vbox->addWidget(lineEdit);
vbox->addWidget(pTicker);
setLayout(vbox);

[houmingc]

Is there other container that i can use other than QVBoxLayout.
what does showEvent and hideEvent do exactly in ticker.cpp?

can give more guidance for this problem?

[SGaist]

To work with QMainWindow's central widget you have to create a container widget and work on it. I already wrote that setting a layout on a QMainWindow will fail since it already has one.

@
QWidget *containerWidget = new QWidget;
QVBoxLayout *layout = new QVBoxLayout(containerWidget);
layout->addStretch(1);
layout->addWidget(pTicker);
setCentralWidget(containerWidget);
@

"QMainWindow":http://qt-project.org/doc/qt-5/qmainwindow.html#qt-main-window-framework

[houmingc]

--How to remove former layout---

under ui->setupUi(this);
I inserted: delete layout();

before adding your code. No progress.

[SGaist]

Again: stop trying to put your own layout in QMainWindow, it's not meant for that.