I've got a problem for which I would very much like a solution please:
All I'm trying to do is use wxWidgets in Visual Studio 2012 (in C++), and make it accessible to my code project. That shouldn't be so hard, should it? But as usual, even though there are programming tutorials for it, wxWidgets is evidently one of those things that has no proper documentation just to simply get it running, or if it does then I sure can't find it.
I downloaded the installer for Windows and installed it. When it finished, it gave me a message that said:
wxWidgets was installed successfully!
Please note: before using wxWidgets in your application,
you must build the library using the same compiler you
use for building your program.
Please see docs/msw/install.md file in the installation
directory for the detailed instructions about how to build
wxWidgets and use it from your application.
It should be noted that I think I remember something on the website or somewhere saying that I can just include a header file into my project and forego the DLL altogether (which is what I'd prefer to do, if possible), though I may possibly be misremembering that or confusing it with something else.
Anyway, when I opened the docs/msw/install.md file, I found (amongst other things) these instructions:
--- From the IDE
Ready to use project files are provided for VC++ versions 8, 9,
10, 11, 12, 14, 15, 16 and 17 (also known as MSVS 2005, 2008, 2010, 2012,
2013, 2015, 2017, 2019 and 2022 respectively).
Simply open wx_vcN.sln (for N=8, 9, 10, 11, 12, 14, 15, 16 or 17) file,
select the appropriate configuration (Debug or Release, static or DLL)
and build the solution. Notice that when building a DLL configuration,
you may need to perform the build several times because the projects
are not always built in the correct order, and this may result in link
errors. Simply do the build again, up to 3 times, to fix this.
Of course, it doesn't even say WHERE the "wx_vcN.sln" files are, but I ran a file search and found them in C:\wxWidgets-3.1.6\build\msw and I opened the one called wx_vc11.sln, because that seems to be the one that corresponds to VS2012, right?
Anyway, it took a LONG time to load, because it had to keep scanning through thousands of files and so forth, but when it was finally finished, I did the "Rebuild All" command thrice in a row, like it says to do (which also took a while).
But I'm not sure where it even put the actual DLL file. It says that it's in C:\wxWidgets-3.1.6\build\msw....\lib\vc_lib\wxmsw31ud_xrc.lib, but where the hell is "...."? It doesn't even bother to specify the entire path! What kind of nonsense is that?! I just want the file so that I can put it into my project! Or better yet, just a .h file that takes care of everything would be great. Supposedly there's one to include called "wx/wx.h", which then includes everything else, I think, but I don't know if that one indirectly also requires a DLL.
I always have problems with DLLs, anyway, though I'll use one if I absolutely have to. You'd think it would be the easiest thing to import a DLL into a project, but for some reason, I've never been able to find any sort of tutorial that explains a specific, step-by-step way to do it which is guaranteed to work, so on the rare occasion that I actually need to use a DLL (99% of the time I can just rely on my own code and the .h files included with Visual Studio), I always end up muddling through it until it FINALLY works by sheer accident (if I'm lucky). Mostly, it just reports errors for one reason or another, that it's not properly included or compatible, or that the header files that I'm using which reference it keep showing the same errors, as though I hadn't even imported the DLL file at all! I've been programming for about 30 years, and I work on things like AI and compression and cryptographic algorithms. I don't say this to brag, but to point out that if someone as experienced as me has trouble getting a DLL to attach properly to a roject, then there's something severely wrong with the whole process, or the documentation for it! I HATE using DLLS, because it's always a HUGE chore, but I'll do it if there's absolutely no other way (though I'd appreciate step-by-step instructions, if you don't mind).
But enough about that. In any case, I have an example project in which wxWidgets is being used in conjunction with Vulkan, and though it has compilation errors (because Vulkan didn't properly install on my machine (when I try to run the sample programs it says they're missing DLLs - big surprise) and as it turns out, I don't think it's compatible with my video card, anyway (which might possibly be why it didn't install properly), so I think I'll have to resort to OpenGL instead - PLEASE tell me that's compatible with wxWidgets!), but even in that example project, it has errors where it's trying to include and use wxWidgets stuff (like "wx/wx.h"), even though that's supposed to be a complete and already working project! I can't find any DLL files or the header files in question anywhere in the project directories!
So anyway, there's got to be an easier way to get this all set up, just to the point that I can make a simple test program using wxWidgets, and compile it. I'd REALLY like to be able to get at least that much working sometime tomorrow morning, so I'd greatly appreciate any help you can give me! Thank you.
#ThisIsMe,
First of all you need to educate yourself on properly using C++.
When you acquire the C++ code it contains of 2 portion - header file and source code.
Header file is what you call a declaration you declare you classes there - class name, member variable and method.
In the source files You define what you declared and you put an actual code there.
Now with that in mind:
wxWidgets contains both header and source files. When you downloaded the installer and did the installation it just copied the "text file" (headers and sources) into the folder of you choice.
Now as you can imagine text files are not executable - you need to compile them into the binary files And that is exactly what you did. (I don't know why you did it 3 times though - I guess you got an errors after building 1st and 2nd time).
Now, you said you have a project that (either uses wxWidgets or you want to incorporate wxWidgets into - which one is it, BTW?). The answer to this question will help direct you to a proper solution.
Now, you said that you tried the Vulkan and it fails to run the demo. How did it fails? Did it produce an error? What was it? Did it even run?
Now wxWidgets does support OpenGL as can be seen by looking at the documentation and checking the different samples that comes with the library, but I'm just curious if what you are seeing from Vulkan is really an incompatibility with the Video Card.
So, we need you to answer the questions I put and so we can help you further. Just keep in mind - C++ is not for the beginner programmers and if you are struggling with understanding the difference between compilation, installation , headers and sources - it will be very hard for you.
Maybe you should start with something simpler - like wxPython and forget about C++ for now.
I have a embedded controller code handed over, it has a bunch on .c files and some headers and a lot of associated files for the embedded processor, its a motorola MC9S12DT256 and it uses a not-so-good compiler - Cosmic. i used Visual studio(just a txt editor) for modifying the code and it changes the hex file being burned to the processor.
I got it earlier this week and spent most of my time on it and it worked ok for minor changes (where changin a value in the code and compiling again made the necessary changes) Now i have to make some major changes. The code calls certain functions which are not to be found any where in the all of the .hpp/.h/.cpp i got. there are no associated dlls as well. I tried to find some basic link and put it in a .sln and still most data is not recognized (as in i cant go to declaration of defn).
So my question is - how to get to the function definiton to where it is called when VS blanks out. Find all references also does no help
Thanks
PM
They may be compiler intrinsics (functions provided by the compiler rather then in a library). But it is not clear how you have determined that they do not exist in a static library or why you think you should be able to see a definition (as opposed to a declaration).
When using Visual Studio as an embedded project IDE, you should create the project as a "makefile project" (even if you don't actually have a makefile), and you need to add all the necessary header paths for your embedded code and the Cosmic compiler standard header folder as include files to the project - VS scans the header files for declarations for Intellisense code completion and browser navigation.
Heads up, this is going to be confusing:
I customized 9 files from Qt5.2: qquicktextdocument.cpp qquicktextdocument.h qquicktextedit.cpp qquicktextedit_p.h qquicktextedit_p_p.h qquicktextnode.cpp qquicktextnodeengine.cpp qquicktextnodeengine_p.h qquicktextnode_p.h
Each file is simply prefixed with a letter and still inside /qtdeclarative/src/quick/items/. I am 100% happy with the modifications I made being put under GPL etc. I somewhat want my end application (discussed below) to be Apache or MIT, but, I'm flexible.
My modifications work fine. When I modify a few additional files I am able to compile them along with the rest of Qt (at the same time, using the same make command). But these modifications are going into another Qt application that I am making which I want other people to be able to use, and requiring general consumers to have a custom compiled version of Qt would be obviously absurd.
I want to package/compile/do something, that will enable me to include the modifications in my final project as a shared library, or something.
As a web developer writing C++ and Qt, I am very confused about linking shared libraries, header files, etc.
To recap, I modified Qt 5.2 and made a custom compilation of it for an application I am building, and I want people to be able to run that application without having to have a custom compilation of Qt. I need a way to decouple my Qt modifications from Qt.
I realize this might be a big topic, I'm not expecting a step by step guide, just some general guidance. So far I have tried compiling my modified files as a library, then including that library in my actual project, but I am getting undefined references and missing files all over the place. (I don't know if I did anything right)
I am also currently looking at subclassing the classes I want but I'm unsure about this. It might require copy pasting some code, which could have licensing issues?
end goal: be able to have a wavy underline (in qml) for incorrectly spelt words.
Thank You.
My 5 cents.
If your changes can be useful (in general) to other people you can try to push them to upstream via codereview.
If you want your application to run only in windows everything become obvious: in windows it is normal to provide your application with shared libraries (to avoid DLL HELL). Btw, have you heard about static linking?
Qt has some plugin mechanism. You can compile your code into shared object (dynamic library) and install it with your application. For example, QML FolderListModel do this. You can look at code in $qt5_src/qtdeclarative/src/imports/folderlistmodel.
I am a Java programmer and have come across a very nasty situation. For POC purposes, I need to write down a small segment of my solution that will run as a standalone application doing something very specific.
I have 2 questions:-
I can write the code, but what I don't know is how do I create an installer and exe out of that C++ code.
Secondly, I need to parse a sqlite db file and show its data in the application. Is there a sqlite windows dll or some C++ library or something that I can use, instead of asking the user to install sqlite (or doing it myself through the installer)? So basically, I don't want an extra program to be pushed in, just a dll or some C++ library..
Please let me know if you have an answer to either or both the issues that I'm facing.
Thanks
Compiling your code will turn it in to an executable. For distribution, you'll want to build it in Release mode. I'm not sure what version of Visual Studio you are using, but you might have a "Setup and Deployment" Project type which will enable you to create an installer. Failing that, you may have to look at InstallShield or a tool like that to ensure that the installer has all necessary files (such as the runtime libraries).
SQLLite is called light for a reason! The source code for it can be incorporated directly in to your project and compiled alongside the rest of the files (see: http://www.sqlite.org/selfcontained.html ). This means no external libraries are necessary to link against, and no extra DLLs need to be redistributed alongside your executable.
I'm a beginner starting to use Microsoft Visual C++ Express 2010 for Windows Programming. I've created a new C++ application using native code, not managed or MFC. I had Visual Studio create for me the basic windows code to create one window with simple menus (chat.cpp). I modified this file and I was able to compile correctly and see my changes take effect.
Now I've added one more source file to the solution (intro.cpp) which I include in my header and call from within chat.cpp. This seems to work just fine, but with one problem. The compiler doesn't seem to be applying my code changes occasionally: I make various edits, recompile, and the "old" code seems to be running. Then, after a while, after I make only a tiny modification, the compiler seems to "catch up" and it runs the new code including all the previous changes I had made.
Is there some kind of cache? Do I need to tell the compiler which files to compile and which ones to just link from object files? Did I make a mistake when I added the file to the solution?
Does intro.cpp have a header file? is that in your solution too?
It's hard for me to imagine that this area of such a mature IDE has a bug here, so I would examine your file list first. Make sure that the Solution Explorer shows all the files you have added and are editing. This is the list that VS uses to determine rebuild is needed.
EDIT: I admit it's not clear to me from your description why it would fail right now. However, typically header files do not include code, it works the other way around (except for class template header files, such as the STL headers). There is some discussion about pros and cons here. The most compelling argument to me in favour of code including headers rather than vice versa is that the header file contains the interface, while the code file contains the implementation.
I would try restructuring your code to a more traditional structure where intro.cpp includes intro.h and any others it needs, and the same with chat.cpp. Then your compilation units are intro.cpp and chat.cpp, and they depend on the associated header files, so provided they are properly listed in the SOlution Explorer, all should work. You can clean up the build dependencies to avoid dups and reduce build time once you have it working as you wish.