The simple model/view example often gives beginners an illusion that after they re-implement the 4 virtual functions: rowCount, columnCount, data, headerData, their model is ready to roll. (The root abstract […]
If you click here and there trying to find the current compiler qt creator is using, you will soon be disappointed. You can find many places mentioning about the compilers/debuggers, […]
If you use QTextStream to read and write files, sooner or later, you will encounter the codec problem. Interestingly, Qt uses utf-8 string almost anywhere but QTextStream does not use […]
Qt project file(.pro file) is used to control the build of projects. I seldom use that because I’m scared by so many mysterious macros. But if you do not want […]
To add an external library to Qt project, you should know the answer to the following questions: how to add lib search path in qt project? LIBS += -L d:/dev/externallib/lib […]
I downloaded an open source Qt project which uses Botan library. Specifically, the project includes Botan header files in its source files such as: include <botan/pipe.h> And the project links […]
Normally, Qt process will terminate child process created with QProcess when the parent process exits, even you do not explicitly call the terminate or kill function of the child QProcess […]
To delete a layout from its containing layout, you may use parentlayout->removeItem(childlayout); However, the widgets on the child layout remain visible. Layout has no setVisible or hide method for you […]
If you deploy your Qt program to another host, you may get this error when running the program on that computer: This application failed to start because it could not […]
I used the following code to convert html to plain text: QTextDocument doc; doc.setHtml( html); QString txt= doc.toPlainText(); Things went well until one day the program hang. After debugging, it […]