QDialog dynamic size.

[hickscorp]

Hello,

I have a very simple question, so i'm going to do an easy explaination of what i want to achieve:
- i Have a QDialog, with various QFrames in it.
- The QDialog is not made directly via code (It is a .ui which is then converted to CPP).
- All of the content of this QDialog are put in a Vertical Layout (I'm not doing this, i have done the set up in Designer, so it is made in code after i convert from UI to CPP).
- Then when the QDialog runs (And depending on user actions), some of the contained elements can be hidden / shown.

What i want is, each time i hidde / show parts of the content, the QDialog to resize to the MINIMUM size possible (Force all the content to be minimum too).

So i tried so many things, does someone know what i have to do (I guess each time i change visibility of content) programmatically?

Thanks a lot for your time!
Pierre.

[wysota]

http://wiki.qtcentre.org/index.php?title=Expanding_Dialog

[hickscorp]

Wysota,

i saw this, but the problem is, the dialog i'm talking about is constructing the layout in from the .ui, and i dont know how to access (get a ptr) to the layout object to do the size constraint...

From my code (A class which herits from the generated CPP), maybe i can use findChildren<QVerticalLayout*> which theorically will return only one item in list (Since there is only one layout over my whole QDialog)?

The thing is, i have ideas, but i'm not sure if it's "clean" and bug free...

Thank you a lot for pointing this article anyway :)
Pierre.

[EDIT:] The layout pointer which is generated in the CPP file is named "vboxLayout" and is public. So my new question is, is this name "vboxLayout" some "nomenclature" which i can be 100% sure will have the same name in future version of QT?

[patrik08]

Wysota,

i saw this, but the problem is, the dialog i'm talking about is constructing the layout in from the .ui, and i dont know how to access (get a ptr) to the layout object to do the size constraint...

From my code (A class which herits from the generated CPP), maybe i can use findChildren<QVerticalLayout*> which theorically will return only one item in list (Since there is only one layout over my whole QDialog)?
The thing is, i have ideas, but i'm not sure if it's "clean" and bug free...
Thank you a lot for pointing this article anyway :)



findChildren is bug free ... this is a super access function ... i have generated Ui file direct
from db (self build on qt generate qtui, latex pdf forms, scribus forms phyton, && xml) and i have construct a class container to take db->fieldname qt->objektname db->data .... and i fill form from two table on 0.344 sec..



lineedit = editperson->findChildren<QLineEdit *>();
boxlist = editperson->findChildren<QComboBox *>();
doubnum = editperson->findChildren<QDoubleSpinBox *>();
numerlist = editperson->findChildren<QSpinBox *>();
datelist = editperson->findChildren<QDateTimeEdit *>();

/* table a start fill */
for (int i=0;i<lineedit.size();i++){
basedata->FillText(lineedit[i]);
}
for (int i=0;i<numerlist.size();i++) {
basedata->FillNumer(numerlist[i]);
}
for (int i=0;i<boxlist.size();i++) {
basedata->FillBox(boxlist[i]);
}
for (int i=0;i<datelist.size();i++) {
basedata->FillDate(datelist[i]);
}
/* table a stop */

next table from his id...

[wysota]

i saw this, but the problem is, the dialog i'm talking about is constructing the layout in from the .ui, and i dont know how to access (get a ptr) to the layout object to do the size constraint...
Each object created from ui file is a member of the UI, so you can access it directly though the pointer.


[EDIT:] The layout pointer which is generated in the CPP file is named "vboxLayout" and is public. So my new question is, is this name "vboxLayout" some "nomenclature" which i can be 100% sure will have the same name in future version of QT?

You already have the ui, so it's name won't change. All objects in ui files are assigned to a member of the generated class which is named after the objectName property. It's a global convention, so I'm pretty sure it'll stick. And if not, you can always access the object through its name.

BTW. It's Qt, not QT. The latter is Apple technology.

[hickscorp]

Oooh very good. Well it answer my question, i'll stick to using the pointer name i got from the CPP generated from the UI.

And about the Apple thing, i'm not surprised at all and glad to learn this came "from" them ^^

Thanks again!
Pierre.

[wysota]

You mean Quick Time? I think it's their primary software technology...