problem in selecting base class

[durgarao]

hi all,
Iam using QT4.4.3 integrated with visual studio2008...
When i Created new project it is asking base class with options QMainWindow ,QWidget , QDialog..Now i want to know in which kind of situation(Application) i have to select the proper base class..

[spirit]

if you need menus, toolbars and etc then you need to use QMainWindow, if you need modal dialogs with own event loop provided by exec method then QDialog in another case you can you QWidget.

[durgarao]

Thanks for reply

[durgarao]

Here my reqirement is the window should be split into 2 parts.
part1 consists of buttons(add,delete)
part2 consists of window that display the trasactions

My questions are
1)how to split the winsow in two parts
2)how to connect both the parts

And i attach the diagram.

[spirit]

in designer select two (or needed number) of widget and push "Form->Lay Out Horiontally(Vertically) in Splitter" button.

[durgarao]

i didn't understand clearly, can u elaborate the answer