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preface Recently studying Qt, Station B After reading a good tutorial, the teacher pulled all the code from scratch without IDE, which is very helpful for novices to learn and understand. Sometimes it is convenient to use IDE, but also missed a lot of details. This tutorial uses UBuntu+vim, which is compiled directly with qmake. It is stil ...

QKeyEvent keyboard event Constructor: QKeyEvent(QEvent::Type type, int key, Qt::KeyboardModifiers modifiers, const QString &text = QString(), bool autorep = false, ushort count = 1)Parameter Description: Type -- > type of event (QEvent::KeyPress, QEvent::KeyRelease, QEvent::ShortCutOverride)Key -- > key value of the key g ...

0. Introduction to position function Qt provides many functions to obtain the position of the form and the size of the display area, which are called position functions. Common location functions are as follows: x(),y(),pos() functions are used to obtain the coordinate position of the upper left corner of the whole form;The frameGeometry ...

Imagine if you used 100 buttons in your program, would you choose to display all 100 buttons on the interface at the same time? Of course not, otherwise the interface will be crowded. We can put these 100 buttons in a scroll area QScrollArea. Users can only see a few buttons at first, but the scroll bar allows them to operate the rest of the bu ...

Suspended window under Qt The recent project needs a suspension window similar to 360 suspension ball. When the mouse is placed and stayed for a period of time, the suspension window will be expanded and the removed area will be automatically retracted. I looked for it on the Internet, but I didn't find it. Thinking about getting familiar with ...

1, Foreword In the system print log or window information bar, all kinds of temporary print information are displayed here. In many cases, we also need to highlight the color display of specific categories of information, such as alarm information, and even different colors can be displayed for information of different alarm levels, which will ...

catalogue 1. UI design 2. Convert UI file to Py file 3. Logic function realization 3.1 initialization procedure 3.2 serial port detection procedure 3.3. Set and open serial port program 3.4 program for sending data regularly 3.5 data sending procedure 3.6 data receiving procedure 3.7 log saving procedure 3.8. Loading log program 3.9 ...

QTabWidget is used for pagination display Important functions: 1.void setTabText(int, QString); // Set the name of the page 2.void setTabToolTip(QString); // Set the prompt information of the page 3.void setTabEnabled(bool); // Set whether the page is activated 4.void setTabPosition(QTabPosition::South); // Set the location of the page name 5.v ...

1, QT basis 1.1 introduction to QT 1.1.1. What is QT A bunch of C++/python class libraries (GUI classes, network,...)Free open source 1.1.2 QT characteristics: Excellent cross platform characteristics: Qt supports the following operating systems: Windows, Linux, Solaris, sun0s, FreebSD, BSD/S, SCO, AIX, 0S390, QNX, android, etcobject- ...

QMainWindow QMainWindow is a class that provides users with main window programs, including a menu bar, multiple tool bars, multiple dock widgets, a status bar and a central widget. It is the basis of many applications, such as text editor, picture editor, etc. menu bar A main window has at most one menu bar. Located at the top of the ...