Create custom widget

[mrjj]

@t0msk said in Create custom widget:

Is possible to create this widget using Qt Designer and then assign values to it dynamically?

Yes. Just Create a new Widget with UI and .h and cpp file

You can then use this from (other) code to make as many instances of the Widget as you want.
say in a MainWindow and put them in a layout there.

[t0msk]

@mrjj

Yes this is it, and how can I spawn it? I mean what is code for spawing it as graphics object and inserting into layout?

[mrjj]

@t0msk
Hi

Like any c++ class.

#include "mywidget.h"

MyWidget * instance = new MyWidget();
ui->somelayout->addWidget(instance );

[t0msk]

@mrjj said in Create custom widget:

@t0msk
Hi

Like any c++ class.

#include "mywidget.h"

MyWidget * instance = new MyWidget();
ui->somelayout->addWidget(instance );

Thank you :)

[mrjj]

@t0msk
Just as a note :)
If you really plan to use 100 instances of this, then maybe
you should use a layout inside a QScrollArea so it allows scrolling.
A layout alone. will not give scrollbars

[t0msk]

@mrjj said in Create custom widget:

@t0msk
Just as a note :)
If you really plan to use 100 instances of this, then maybe
you should use a layout inside a QScrollArea so it allows scrolling.
A layout alone. will not give scrollbars

Thanks :) Would be great if I could create folders in Forms directory :)

[t0msk]

@mrjj Can I ask you about that scroll area?

I wanted to add widget into:

ui->scrollAreaWidgetContents

But it doesn't have a addWidget method.

[mrjj]

@t0msk
Hi
Well you can.
Remove the ui/cpp/h from project. (dont check the delete file checkbox)
In the .pro file
you can add
FORMS += Controls/theForm.ui

and you can put the ui file in the sub folder Controls
and then Add the UI to the project.

You might also need to change the
INCLUDES +=Controls/theForm.h
and
SOURCES +=Controls/theForm.cpp

for it to find the .cpp and .h

[mrjj]

@t0msk said in Create custom widget:

ui->scrollAreaWidgetContents

Hi
Since you have ui. do the following.
Place any widget inside scroll area. (like button)
Right click besides this widget. (in scroll area)
Choose a layout in the layout menu.
Now delete this widget again. (the button)
The layout will stay!
Notice the name of the layout
then from code
ui->thenewlayoutname->addwidget(xx);

[t0msk]

@mrjj

Yea, I have it like that:

It is scrollAreaWidgetContents, but if I do ui->scrollAreaWidgetContents->Add it shows only AddAction.

[mrjj]

@t0msk
Hi
Look in the layout section of the properties.

to see the name.

And yes, its slightly confusing as the structure is a bit flatten
so
its not
ui->scrollareaSomething->layout
but just
ui->verticalLayout_5->addwidget(xxx)

[t0msk]

@mrjj Again thank you very much!! :)