I followed some youtube tutorials before actually downloading Xcode and trying things myself, and while they have been very in learning the basics of C++ on the coding side of things, none of the videos explained how to actually set up or run files and now that I have it downloaded I can't get anything to run (FYI I am using Xcode v8.2.1.) The "run" option is greyed out in the top product menu.
I found this thread but the accepted answer derails for me by point 2 because when I open Xcode and start a new file I have no option to select the command line tool, which apparently solved OP's problem.
So I basically just want to create some "Hello world" text and output it somewhere but I can't. Can someone give me a simple rundown of how I can get started?
Related
I want to build C++ GUI programs using Codeblocks+Wxwidgets+cmake. I tried to configure Wxwidgets with codeblocks IDE following the instructions given in the wxWidgets Discussion Forum as well as other Youtube tutorials.
I followed the youtube tutorials below.
Youtube tutorial
But, when 'DEBUG' and 'RELEASE' are being built, it keeps showing some kind of errors. As a result, the building was failed.
Please help me to solve this or suggest another easy way to do C++ GUI projects.
Thank you!
There is an excellent document explaining how to set up C::B with wxWidgets. It can be found here.
It is not about CMake-thingy, but it is written with enough details to help people understand how to setup the IDE.
So I suggest to delete C::B, delete wxWidgets, delete all projects you setup before and start all over, following the instructions from PB to a T.
If you hit a wall or something will not work - please comeback with the exact explanation.
Firstly, I would not post here because I did not look up questions and answers already relating to this. I have tried the solutions, to little avail, as most questions revolved around previous versions, and were vague in some way. Below are the pages I visited:
Links
https://forum.qt.io/topic/78962/how-to-use-qt-with-visual-studio-2017/13, this ruined my case even worse. Something temporarily broke down because of the last 2 steps, but was back again to normal after restarting QT.
How to build Qt for Visual Studio 2010, I have VS 2017, and the command line prompt for that doesn't recognize 'configure.exe'. This is the line of code:
configure.exe -release -no-webkit -no-phonon -no-phonon-backend -no-script -no-scripttools -no-qt3support -no-multimedia -no-ltcg
Building Qt for Visual Studio 2010 - cannot open file 'qtmaind.lib', related again to VS 10, should I really work on the 2010 version? Is there a way to configure it for 2017, as it is the tool I am most familiar with?
qt cannot open input file 'c:\Qt\qt\lib\qtmaind.lib', I have no idea what QMAKESPACE is. I just started yesterday with the intent of making my semester project in it, so I do not have any professional experience with QT previously, or any kind of experience in general. The link attached to the ticked answer, https://doc.qt.io/archives/qt-4.8/supported-platforms.html, does not offer any kind of help. It just details what systems it supports. I am currently using Windows 10, version 1809.
https://www.qtcentre.org/threads/23917-fatal-error-LNK1181-cannot-open-input-file-qtmaind-lib, really lost me. Where are the qt sources that Nish is talking about? Are they from here: https://www.qt.io/offline-installers, from "Source Packages And Other Releases". Where are these files? Did they come with the installer from here: https://www.qt.io/download ? With what do I compile them with? Will these compiled files make some .exe files? Even more, these posts are from 2009.
What Is The Problem?
I watched the video by Derek Banas' series on QT ( https://www.youtube.com/watch?v=I96uPDifZ1w&t=297s ). Here are the steps I took to set up QT:
i): Went to https://www.qt.io/download.
ii): Selected "Go Open Source", and then clicked on download
iii): Started the QT setup after download. In the packages menu, I selected
the default. This gave me QT 4.6.3.
iv): Made a new project as shown by Derek Banas.
v): Upon selecting the green arrow on the bottom left, with debug option chosen, I pressed it. It gave me the error:
LNK 1104: Cannot open file 'qtmaind.lib'
vi): Changed to release, profile, gave me this error:
This application failed to start because it could not find or load the Qt platform plugin "windows"in "".Reinstalling the application may fix this problem.
I tried reinstalling it. No use. I went here: https://www.qt.io/offline-installers, and download 5.12.1, the latest, plus the zip file in "Source Packages And Other Releases". Again performing the same as above, with the same errors.
Confused because the video did not address such an issue. Looked online. did not find much here, thus, I am here. My hypothesis:
i): This is something related to my path variables. Since both versions exhibit this issue, it means that fault is from my side, not QT's.
ii): Some windows .dll files are missing. But I do not know what files they are.
Before You Answer
Please just give me the directions I should move in to solve this issue. I do not have any idea where to go from here, but I really, really, really want to learn QT as part of my C++ learning, and I'm willing to work; I just lack the guidance.
If this is downvoted, please just send me some links which specifically address my issue so I can head over there. I would be very glad for the directions. :)
And lastly, thank you to all of you for reading through this wall of text!
Here are a few pictures of what I am seeing:
It finally worked!
If this is of some help to anybody out there, please do not select the default button at the installation phase. Depending on your time, please go ahead and select MSVC 64 bit, MSVS < 2nd Latest Version >, and MinGW < Latest Version > 64 Bit, that shows up at the installation time. This will allow you to use a different kit that you can use to run your application with. To access this kit, go to the green button, hover over it, or click it, and there will be a kit called, desktop QT MSVC 64-bit, and then select this, and then run your program. This will run your program properly.
Im a novice coder, that needs to make a simple UI - i've chosen to do it in Qt Creator.
As i need to incorporate a webcam feed, i've been advised to use OpenCV.
I've followed the following guide: https://wiki.qt.io/How_to_setup_Qt_and_openCV_on_Windows
However im running into the problem "Error code 0xc0000135" when i try to debug my code.
I've added the different PATHs to the Enviromental Variables as requested in the guide. Anyone with a kind idea of where the issue might lie, or can it be anywhere in the process?
Cheers!
I am going to suggest that unless you are going to do a lot of computer vision stuff, that you leave OpenCV for the native Qt approach which is QMediaPlayer.
In QtCreator the example is built in, just select "Welcome" -> "Examples" -> "search for video player" -> "select example.
Or if you prefer browsing online, here it is.
If you still want to use OpenCV, please add more details to the question so it is easier to help you!
I just don't seem to be able to get OpenCV to work properly. Here's what I want to accomplish:
Use CodeBlocks (which I installed using codeblocks-10.05mingw-setup.exe) with OpenCV (installer: OpenCV-2.4.2.exe) on my Windows x64.
I've tried a lot of different configurations which will only bother you if I posted them all, so I hope you don't mind if I just ask the simple question: how do I get this to work?
I think I'm missing the smallest detail right now, so a detailed description of how to get started would be welcome.
If the OpenCV installer did the job, you should have by now OpenCV libraries and headers already installed in your system.
I would then go ahead and try to compile a hello world basic code, like the one you can get from here. If you would like to program using an IDE, like VisualC++ in Windows, you can follow this guide that will help you setting up the environment.
OpenCV team just introduced their new web site. There you can find Introduction to OpenCV section with installation instructions, including detailed instructions for Windows. Don't forget to cleanup your system before installation to avoid problems with mixing different install options. If you still can't get it working with CodeBlocks, follow Dan's advice and try compiling from command line.
When you are done with installation, go on and read there great new tutorials!
...and I mean LITERALLY just beginning. As in, I just started earlier today.
All I want to do is figure out how to build and run a 'hello_world' code from my textbook, but the 'build and run' button will not light up. I have read through 'Xcode Features Overview' as well as checking out at some help forums, and it's clear that I need files in my template that I just don't have. I think the issue is that I'm starting with a blank template when I should be starting with a 'C++ tool' template. This seems like it should be incredibly simple, but when I hit file/New Project... assistant does not pop up, instead I get a window with very limited options including Application, Framework & Library, Application Plug-in, System Plug-in and Other. I feel like I can pick a lot of this up from help forums and reference documents but I definitely need to figure out how to successfully build and run a program first XD
P.S. I have Xcode 3.2.2 if it makes a difference
In the "New Project" window, select Application > Command Line Tool, and choose "C++ stdc++" from the Type drop down.