Question: How can i achieve this kind of look and feel with colored buttons and rounded corners in dialogs for a windows application?

i dont think it can be done using MFC , will wxWidgets or Qt help ? or any other platform?![enter image description here](https://i.stack.imgur.com/i3fmY.png)

Answer: 
You can design whatever the look & feel you are pursuing using `QSS`. Why don't you take a look at Qt Documentation ? There are plenty of examples & guidance available. 

* [Stylesheet Examples](http://qt-project.org/doc/qt-5.0/qtwidgets/stylesheet-examples.html)
* [Stylesheet Reference](http://qt-project.org/doc/qt-5.0/qtwidgets/stylesheet-reference.html)
* [Stylesheet Syntax](http://qt-project.org/doc/qt-5.0/qtwidgets/stylesheet-syntax.html)
* [Customizing Qt Widgets Using Stylesheets](http://qt-project.org/doc/qt-5.0/qtwidgets/stylesheet-customizing.html)

But at times, you will need to override a control to achieve your goal. Like in [this question](https://stackoverflow.com/questions/13655018/specific-qpushbutton-style). But I think your required look can be achieved via `QSS` alone.
It is easy to achieve such a look and feel with **any** GUI framework.

Choose the framework you are most comfortable with, RTFM, roll up your sleeves and get started.

On any framework you will find methods to draw bitmaps of any color and shape and to handle mouse clicks on them. What more do you need?

This is what GUI frameworks DO! They also provide a default set of widgets for the bone lazy and the conventional. You aren't one of those people. are you?