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I am new to the GUI development environment. I found qt to be interesting as it is a huge framework but it requires its program to be coded in C++. I want to create a small windowed GUI program which could have transitions etc. provided by QML. What are the possible ways to compile it along with existing C code with or without qt creator ?
As long as you pay attention to linkage (C functions should use C linkage), there will be no problems: a C library can safely be used in a C++ program.
For what concerns implementing your GUI with QML, start by taking a look at the Qt QML examples and work your way from there.
QML is mostly used for mobile UI render (i.e. when there's no native support openGL kicks in and renders the element via the available driver), anyway it can play along just fine on any Qt-supported platform.
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Are QT/WxWidgets wrappers around respective native APIs' on linux, windows and Mac?
How are cross-platform windows framework built? How is cross-compiling done?
Thanks
Yes.
Sometimes they use lower level APIs to generate their own implementation of higher level APIs; like one that uses OpenGL to implement non-OS widget library. At other times they could adapt/reskin/modify OS widgets.
They are usually not cross-compiled. They just build and provide a similar API on multiple platforms, allowimg "client" code to compile with fewer changes on multiple platforms.
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I'm in the process of learning C++ and was wondering about the graphical implications of C++.
I know Chrome was developed in C++, but I don't see how to replicate it or create any sort of GUI.
How is Chrome programmed for the UI?
C++ doesn't include any graphical library in it. So you need to use any existing third-party library or API of operating system.
For example, there exists next graphical libraries, which supports C++:
MFC
Qt
wxWidgets
TCL/Tk
GTK+
Some of them are object oriented and some - not. Some of them are portable, some - not. Some of them are proprietary, some - not.
Also you always can use low-level API's such as Win32 API
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I`m in need of creating ui for a program written in c++. As I am a total newbie in Qt I need some help. The original program is quite long so I will just describe what I need. Program in console version just asks user for a row of numeric data and calculates solution. I have designed a UI in Qt [1]: http://i.stack.imgur.com/Hox2u.jpg and and I want to use my old program as a function in which input data are gathered from UI and then start button launches calculation and returns the solution.
To make it easy how to connect for example an easy function (c * b+c) where inputs are values gathered from comboboxes and sliders made in design mode and how to launch that function by button and return the solution?
Very rough guess, but I believe you want to reuse your previous code without copy pasting the new UI code .
For that you should use static or dynamic linkage. Set your old program to be compiled as a library and link it to your project.
Find tutorials online on how to do that.
Search for static linkage, dynamic linkage, dynamic loading and shared libraries.
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I'm sorry if the question is stupid and naive but still: how one can/should develop gui apps for windows in VS using native c++? I'd like to avoid using CLR and .NET stuff in the project. There are 2 obvious way: use heavy and monstrous MFC or code using API without any visual support, which seems also a bad choice for tricky ui. I wonder if there are other ways to create gui in VS?
You can use Win32 API which is a bit more complicated or use other external libraries that are easier such as gtk, wxWidgets, QT and others, but Win32 API is better because you will understand the operation of the windows and not have to download any library, but usually the codes made with Win32 API are higher than those made with external libraries. Using Win32 API you need to create the window class, event loop and other manually way.
I think QT is the easiest because the interfaces are created in graphical environments.
See these:
http://qt-project.org/
http://www.gtk.org/
And this tutorial about QT:
http://zetcode.com/gui/qt4/
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I am given a task to develop an C++ command-line(terminal, I am using, will run the program in Linux/Ubuntu) display. But I dont like the command-line design, is there anyway to improve the UI design?
Note: I must run the program in terminal!!
ncurses. It's a lib to be able to put text wherever you want in the terminal, so you can effectively draw, ascii-art style in the terminal. It's also a very old library, so it may be a little tedious to use.
I developed a simple multiplatform console management library some time ago.
You can use it at least on Linux and Windows. It uses native calls in Windows, and standard escape codes in other platforms.
If you just want to show some colors, position the cursor, and so on, you can use it in a matter of minutes without struggling with ncurses.
The documentation (generated with doxygen) is included in the Zip file.