qt

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 […]

A Qt project typically has some source files, header files, and a .pro file(project file) in a directory. If you copy a whole project directory that has been built to […]

The deprecation of QWebView in Qt5.7 seems a sign of the Qt team being compromised by M$ finally. However this creates many troubles for programmers porting QWebView to QWebEngine. Although […]

When you switch Qt from the old version to the latest version(Qt 5.7.0), you must find your programs cannot compile any more. Even you do not change any option, the […]

When you compile a program using mingw, an error may cause a lot of output in the command window. Because the cmd window only stores a limited lines of text, […]

You may think mouse drag-drop simulation is as easy as  mouse click simulation because a drag-drop event is just composed of a mouse press event, some mouse move events, and […]

If you search google for how to capture events, most articles you get will teach you install event filter for child objects, then rewrite the eventFilter function in parent. This […]

You have several ways to simulate mouse events in a Qt application. First, you can create and post mouse events using native functions like: QMouseEvent eve(…); qApp->sendEvent(this , &eve); Second, […]

Sometimes it is necessary to alter the user-agent header for the request sent by QWebView. Some websites may refuse your visit if you do not use a normal browser. In […]