Qt5 cannot find qapplication. When I changed it to "TEMPALTE = app" the .

Qt5 cannot find qapplication. h file in the directories, the compiler can't locate it. When I changed it to "TEMPALTE = app" the . For any GUI application using Qt, there is precisely one QApplication object, no matter whether the application has 0, 1, 2 or more windows at any given time. It handles widget specific initialization, finalization. 0 Qt-based applications does not like widgets by default The solution works for me, Qt 5. If your . 7. After this when you re-complie your project, everything should be fine. pro file and run qmake and also use #include <QApplication> instead of #include <QtGui/QApplication> (and the code becomes compatible with both Qt 4 and 5), you can read more here It looks like from 5. Dec 15, 2020 · 之后提示出错： fatal error: QApplication: No such file or directory 由于Qt5将大部分桌面部件移到了Qt Widgets模块中，即QApplication已经从原来的<QtGui/QApplication>移动到<QtWidgets/QApplication>了。 We would like to show you a description here but the site won’t allow us. As it cannot seem to locate QtGui either. It specializes in the QGuiApplication with some functionality needed for QWidget based applications. pro file has this line: Mar 28, 2020 · Solved the issue. cpp file. ) Mar 20, 2018 · Anyway, when I added Qt5::WebEngineWidget for QWebEngineView in the target link it worked fine, but when I added Qt5::Widgets for QApplication it does not seem to be able to find the file and i dont know why. Detailed Description QApplication specializes QGuiApplication with some functionality needed for QWidget -based applications. txt. After added the following line to your . For non- QWidget based Qt applications, use We would like to show you a description here but the site won’t allow us. It seems like you have installed the C++SDK with Qt, but the compiler can't find the QApplication header file. For any GUI application using Qt, there is precisely one QApplication object, no matter whether the application has 0, 1, 2, or more windows at any given . pro file was parsed, and the file to include resolved correctly (QApplication). Mar 28, 2020 · There seems to be a problem with QtGui. Even though you have the QApplication. pro file: Right-click on your Qt Project and click "Run qmake" Run qmake. I had not added Qt5Widgets to find_package in a top-level CMakeLists. Jul 6, 2014 · To start things off, the error QApplication: no such file or directory means your compiler was not able to find this header. Jan 5, 2013 · I already had the "widgets" line but it still couldn't find the library as I included it in the . Let's solve this issue by configuring the compiler to find the QApplication header file. Aug 25, 2021 · The QApplication class manages the GUI application's control flow and main settings. Mar 28, 2018 · (You should be able to reduce to just <QApplication>, as QMake will normally add the necessary include paths based on the libraries specified in the QT variable. It is not related to the linking process as you mentioned in the question. Feb 25, 2013 · QApplication and Qwidgets derived classes are in widgets module in Qt 5 so to fix that you need to add QT += widgets in the . kbwnxq xtqmquk duelo csuka lgsl jujca tji yah rzzdkk qslb