Programmer Group

1, Problem Description: sometimes it is necessary to save some pictures drawn by Qt as png/jpg/bmp format pictures. Next, according to a simple test program written by myself, I will explain how to save pictures in Qt. This article mainly explains how to use the combination of qpainer and QImage to save pictures. 2, Display effect: 1. Interf ...

Original address: http://blog.csdn.net/zhi379/article/details/28412189 Qt custom delegation draws control, picture and text in QTableView Original link: http://qimo601.iteye.com/blog/1539147 Blog category: Qt QtCustom delegationQTableViewQCheckBoxprogress bar  Custom delegate, inherited from, qstyleditemtdelegate c ...

With the background of blog, we used Pyqt5 to implement a simple calculator. I think it's important to use the eval function of py When did I write the player or implement the java directory tree or xml parser I want to write recently The idea is to click the button and add it to string to form algorithm expression, and then rely on python's po ...

The era of reading for all has come. At present, there are 210 million users who use reading software and more than 5 million daily active users. Among them, more than 60% are 19-35-year-old young users, 80% are undergraduates or above, and more than 80% are beishangguangshen and other provincial capitals / municipalities directly under the cen ...

Sketch Sometimes, when we are making an application, we don't want the software we generate to be just an EXE file, but to split it into modules, the finer the better. In the future, it is very convenient to release updates. We only update a small part of them, not the whole application. (let's look at the code.) Plug-in generation ...

1. Preface Baidu Online Map has been used for a long time, and it has been continuously improved until today. In addition to basic map loading and setting some related attributes, various js functions are added to load data directly and asynchronously, such as dynamically adding points, rectangles, circles, administrative divisions and so on.Of ...

I. Preface The provincial and municipal area map can also be called the provincial and municipal outline map, which is to turn the border area of each province and urban area into an outline display. It is only a general outline, basically consistent with the real map. After all, it is piled up one by one, which may have a very small error. Whe ...

                              . QT provides a class of QLayout for layout management, which can solve this problem well. Common layout management includes QVBoxLayout, QHBoxLayou ...

Because of the data problem in the database, it is not as good to take blank pages as the prototype image on the board: Body Code: <div *ngFor="let q of qt.questionMainList; let i=index" [ngSwitch]="qt.questionTypeId"> <div *ngFor="let qtl of questionTypeList; let k=index"> <div *ngIf="qt.quest ...

PyQt5 building library management system (3) -- Design of login page PyQt5 building library management system (3) -- Design of login page Analysis Code: The effect is as follows Analysis The logic of the login page is simple, as follows: -User input student number and password (for security, plus input ...