4:36 please note that this is only a check and NOT a definition which major version of QT is used. The line "greaterThan(QT_MAJOR_VERSION, 4) : QT += widgets" only checks whether the defined value of QT_MAJOR_VERSION (defined by qmake automatically) is greater than 4. If this is true, then widgets is added to QT. This is done as only QT major version 5 (and up) have to include widgets, thus it won't be included if e.g. major version 4 is used. Hope this clarifies the code a bit.
if you find problem when click build, then right click the project name(in the example is "HelloWorld"), and choose execute qmake, which will solve the problem
At 1:00 I see the options for "Other project" have as first possibility the "Qt Unit Test " . But my QtCreator offers me "Auto Test Project" ,and not "Qt Unit Test" , nor "Qt quick controls UI" that I see in your screen. What version do you have in the video? I have Qt Creator 4.7.0-rc1 (4.6.84) Based on Qt 5.11.1 (GCC 5.3.1 20160406 (Red Hat 5.3.1-6), 64 bit )
Thanks for this series, I am just getting started with QT on Linux. One thing I did not get, why are you using the label pointer to set window properties? To me it would have felt a lot more natural to use the app (QApplication) object to do that. Isn't 'app' the application (or window) and 'label' the actual label? I have not coded c++ in 15 years so I have forgotten most of it, and of course back then it was just basic non-gui-coding :-)
if i try to build the project, the compiler returns an error, saying that he program has unexpectedly finished. The process was ended forcefully., anyone can help with that?
Hi, Thanks for this tutorial. I'm using QT creator for creating Empty Qmake Project.After creating the project i'm getting error mentioned below Project ERROR: Cannot run compiler 'cl'. Maybe you forgot to setup the environment? Error while parsing file D:\QT_Practice\HelloQmake\HelloQmake.pro. Giving up.
Help Me! When I build, all it's normal, but when I run the code, appear the following error: This application has requested the runtime to terminate it in an unusual way. Please contact the application's support team for more information
I solved the problem!! I had to include a folder in the path: "C: \ Qt \ qt version \ your compiler (in my case, MinGW) \ plugins \" and copy the folder named "platforms" next to the executable program, and there will be no more errors ! Good luck! :)
sir, I have installed Qt on raspi2, when i tried to build n run it shows me that "Cannot run: No command given.: " i had followed all the step of set up..help me out.
Wow this one lost me a little bit. I was a little confident until you started entering those arguments and codes...do they automatically generate? like the formulas in other programs? or do I have to enter them always? ughhhhhhhffff. Lets see lesson 4 so far so good. Thanks
Although I have basic knowlegde with scripting I just can't come into Qt. Now I watch this and it keeps me alone with so many details. You create a cpp file because.. I couldn't find the reason. cpp is .. C++ source file, not Class not Header, ok..(?). So I guess this is C++, not Qt, or Qt in C++, what means that Qt is just an library for C++? I don't get it. You explained the .pro file as cmake in C++, but.. isn't all based on C++? Why an .pro file and not cmake or make file? "then just write plus, equlas, widgets, ok?" No! don't ask ok, if there is no one who can answer or nod. What means "+=" ? why "widgets" ? we make a widgets application with.. : QT += widgets? And "add a '+' to the QT above.. ok?" what, not ok. why? And so on.. I feel lost :( Should I maybe learn C++ first?
Yes, you should definitely learn C++ first, it isn't exactly the easiest language out there. Or you could try using the Qt bindings for other languages such a python, I haven't tried it myself, but python is a simpler language to learn.
It seems really weird to me to access the window properties from a Label object. These methods should exist in the app object or at least in a Window class. What the fuck qt developers were thinking when they designed qt?
'QAplication' file not found /home/../../../main.cpp:4: error: Unknown type name 'QApplication' /home/../../../main.cpp:5: error: Unknown type name 'QLabel' /home/../../../main.cpp:5: error: Unknown type name 'QLabel'
SOLVED: I clicked run way before we made the Label and it started the program but had no window for it. So just closed Qt and opened again, forcing all the closures.
This is an AMAZING breakdown of the foundation to QT. It is a reference that I come back to. Thank you so much!!!
Code for this video - www.codebind.com/c-tutorial/qt-tutorials-for-beginners-create-first-qt-application/
This tutorial is so much better than Qt's official tutorials!
4:36 please note that this is only a check and NOT a definition which major version of QT is used.
The line "greaterThan(QT_MAJOR_VERSION, 4) : QT += widgets" only checks whether the defined value of QT_MAJOR_VERSION (defined by qmake automatically) is greater than 4. If this is true, then widgets is added to QT.
This is done as only QT major version 5 (and up) have to include widgets, thus it won't be included if e.g. major version 4 is used. Hope this clarifies the code a bit.
R6rrrrtyrrrrrrdyrrryytrrtrsrrrryrytrrrr
5rryrr6trrt6rerryrr7rr6rrrt6rr6rrrrtrrrrrrrrrrrttyrr
Great video, but please get a pop filter for your mic.
set speed 1.25 and its ok than
These tutorials are great, they should be updated since these are more than 7 years old and software technology moves ahead quite fast.
Help me! I right click on the "HelloWorld" project, but the "add new file" button is unavailable.
thank you man !
" . .to record a good vocals, put your mic in your left or right side, or get a pop filter " :)
i see your keep your development environment in you ~/Pictures directory. way to stick it to the man.
hehehe
If you find QApplication not included, be sure to check if you have saved(control + s) the pro file
I've solved this issue by using instead of QApplication
@@monsieur_piyushsingh thx bro
@@monsieur_piyushsingh thaaaaaaaaaaaaaank you so much
Thanks!
Hi There !! i just started learning QT. Is there any recommended book for QT to dig in to it ?
if you find problem when click build, then right click the project name(in the example is "HelloWorld"), and choose execute qmake, which will solve the problem
You are a life saver, I was panicking why ```QApplication``` is not found, thanks!
Thank you for this wonderful tutorial!
it says QApplication is not found?????
What do you mean compile using QtWidgets?
At 1:00 I see the options for "Other project" have as first possibility the "Qt Unit Test " . But my QtCreator offers me "Auto Test Project" ,and not "Qt Unit Test" , nor "Qt quick controls UI" that I see in your screen. What version do you have in the video?
I have Qt Creator 4.7.0-rc1 (4.6.84)
Based on Qt 5.11.1 (GCC 5.3.1 20160406 (Red Hat 5.3.1-6), 64 bit )
how can ı solve when ı use #include my qt program give me not found library error
Hi! I can't digit curly brackets. When i press alt and the code for curly brackets the application switch between the windows of the debugger console.
i m getting the error when i run application " the code execution cannot proceed because qt6core.dll was not found", please help how to fix this
Thanks for this series, I am just getting started with QT on Linux. One thing I did not get, why are you using the label pointer to set window properties? To me it would have felt a lot more natural to use the app (QApplication) object to do that. Isn't 'app' the application (or window) and 'label' the actual label?
I have not coded c++ in 15 years so I have forgotten most of it, and of course back then it was just basic non-gui-coding :-)
What do I do if my QT version doesn't let me add any new files into a preexisting projects?
I had the same problem. I fixed it by checking the box for desktop qt MinGw when you get to Kit selection (min 1:37 in the video)
sir your given links in description for other courses is not working. Please as soon as possible,Update the link
Hey isn't there any Drag and Drop Technique instead of writing codes??
Are these tutorials also applicable for the qt add in visual studio?
if i try to build the project, the compiler returns an error, saying that he program has unexpectedly finished.
The process was ended forcefully., anyone can help with that?
what do i do if there is no QApplication library...??
I didn't find out, why the window title is changed through label? It doesn't make sense...
Absolutely Brilliant Tutorial, Well Done!
1:38 Bro, I may not pass by this screen, btw i may not choose any of the options. Can u help me pls?
Thanks, works well
Hi,
Thanks for this tutorial. I'm using QT creator for creating Empty Qmake Project.After creating the project i'm getting error mentioned below
Project ERROR: Cannot run compiler 'cl'. Maybe you forgot to setup the environment?
Error while parsing file D:\QT_Practice\HelloQmake\HelloQmake.pro. Giving up.
I am using QT6 but I am not able to see any class QApplication.
you sound a bit like sal khan from ka, and great video!
Why don't I have a separate Source folder when I make the main.cpp ?
is this tutorial still relevent ?
as qt may have developed over the years
why i.m don't include libary QApplication, it's appear QApplicationStateChangeEvent?
I have same problem :(
Solved!!! I just restart QT and missing libary found :)
also try
#include
he doesnt need to learn english grammar to get into Qt
Very well explained for begginers ... Thanks a lot Sir
is it not possible to install it in ios?
Can you please make some vedios on qt for python( pyside2) in qt creator??
Help Me! When I build, all it's normal, but when I run the code, appear the following error: This application has requested the runtime to terminate it in an unusual way. Please contact the application's support team for more information
I solved the problem!! I had to include a folder in the path: "C: \ Qt \ qt version \ your compiler (in my case, MinGW) \ plugins \" and copy the folder named "platforms" next to the executable program, and there will be no more errors ! Good luck! :)
Please, how can I deploy my finished application on Qt 5.1??
Error while building/deploying project first (kit: Desktop Qt 5.8.0 MSVC2015_64bit)
When executing step "qmake" how to remove this error
how did you sole it plz
sir when i have build project it also gave deployment error how to solve it...
this video helpful, thank you
sir, I have installed Qt on raspi2, when i tried to build n run it shows me that "Cannot run: No command given.: " i had followed all the step of set up..help me out.
You fixed it yet?
Thanks a lot for this video!
When i try open .exe file from debug directory bam QT5cored.dll missing.
Thank you for your tutorials. They are very helpful!
Why you never deleted label?
😅
Thx your code and video lecture
but the real qt is you mah g
awesome thank you!!!!!!
Great videos, but you need a pop screen on your microphone
Very good video
Great tutorial ! Thanks！
Wow this one lost me a little bit. I was a little confident until you started entering those arguments and codes...do they automatically generate? like the formulas in other programs? or do I have to enter them always? ughhhhhhhffff. Lets see lesson 4 so far so good. Thanks
Hello sir i cant add new file to my project why sir please tell me
mee too
label->setWindowTitle()
label->resize()
Great tutorial!
Thank you :)
thank you
Really helpful thanks :)
Good video~~ Thanks!
How to use graphics.h header file in that
how about QT for python tutorial
Also error:Id returned 1 exit status
Although I have basic knowlegde with scripting I just can't come into Qt. Now I watch this and it keeps me alone with so many details.
You create a cpp file because.. I couldn't find the reason. cpp is .. C++ source file, not Class not Header, ok..(?). So I guess this is C++, not Qt, or Qt in C++, what means that Qt is just an library for C++? I don't get it.
You explained the .pro file as cmake in C++, but.. isn't all based on C++? Why an .pro file and not cmake or make file?
"then just write plus, equlas, widgets, ok?" No! don't ask ok, if there is no one who can answer or nod. What means "+=" ? why "widgets" ? we make a widgets application with.. : QT += widgets? And "add a '+' to the QT above.. ok?" what, not ok. why?
And so on.. I feel lost :( Should I maybe learn C++ first?
Yes, you should definitely learn C++ first, it isn't exactly the easiest language out there. Or you could try using the Qt bindings for other languages such a python, I haven't tried it myself, but python is a simpler language to learn.
good tutorial, but font is too small to see.
I am getting sick when I see "hello world"
It seems really weird to me to access the window properties from a Label object. These methods should exist in the app object or at least in a Window class. What the fuck qt developers were thinking when they designed qt?
I can't add new......Nice beginning lmao
05:50 what ?
becuse it gives error
everything came by itself😂😂
unknown type name 'QApplication'
Lebon al mike, sardinium fighter
oke?
'QAplication' file not found
/home/../../../main.cpp:4: error: Unknown type name 'QApplication'
/home/../../../main.cpp:5: error: Unknown type name 'QLabel'
/home/../../../main.cpp:5: error: Unknown type name 'QLabel'
So I tried to build but it says "cannot open output file debug\HelloWorld.exe: Permission denied
SOLVED: I clicked run way before we made the Label and it started the program but had no window for it. So just closed Qt and opened again, forcing all the closures.
when i tried to build the first code. the compiler says" QApplication: No such file or directory"
What can i do now? plz help.
md rahman it means you didn't include the qt library.
少库@@LetTheWritersWrite