Dynamically creating window

Mylavarapu.Manikanta

Hi all.
In main window after clicking "graph" button, one window(like dialog) dynamically to be created and it will come like a popup, in that i have to create two splitter windows. In each splitter window some waveforms(like sine,square) has to be drawn.

How can i do this in qt 5.5? please tell me the solution

jsulm

@Mylavarapu.Manikanta http://doc.qt.io/qt-5/qdialog.html

Mylavarapu.Manikanta

Thanks jsulm.

But How to create a splitter widget in a dialog?

jsulm

@Mylavarapu.Manikanta Subclass QDialog and implement what ever you need there.
There is no difference in creating a splitter in a dialog compared to a widget. See http://doc.qt.io/qt-5/qsplitter.html

VRonin

@jsulm said in Dynamically creating window:

Subclass QDialog

You dont even have to do that:

QDialog dialog;
QVBoxLayout* dialogLay = new QVBoxLayout(&dialog);
QDialogButtonBox* diagButton =new QDialogButtonBox(QDialogButtonBox::Ok,&dialog);
QSplitter* splitter = new QSplitter(Qt::Horizontal,&dialog);
splitter->addWidget(new QLabel("I'm a label",&dialog));
splitter->addWidget(new QLabel("I'm a label too",&dialog));
dialogLay->addWidget(splitter);
dialogLay->addWidget(diagButton);
dialog.exec();

P.S.
If you want to be that guy you should avoid allocating QDialog on the stack like I did, see https://blogs.kde.org/2009/03/26/how-crash-almost-every-qtkde-application-and-how-fix-it-0

Mylavarapu.Manikanta

Thank you VRonin.

Can you tell me how can i plot graphs in qt 5.5.
Can i use QWT or some thing else?
Please tell me

jsulm

@Mylavarapu.Manikanta What about Qt Charts?

VRonin

Qwt if you need LGPL license
Qt Charts or KD Charts if you are ok with GPL license

Mylavarapu.Manikanta

Thank you VRonin.
I installed QWT4.2 for QT 5.5 in windows os.
My doubt is how can i add QWT functions in my qt project.

jsulm

@Mylavarapu.Manikanta I googled for "qwt example" and found this: https://github.com/berndporr/qwt-example