Programmer Think

I. Preface Histogram is similar to the display of histogram when playing music. The top provides a horizontal line. When the column rises, the line rushes to the top in the form of a hat, which is equivalent to the feeling on the top of the column. It gives people a dynamic feeling. While listening to music, it is more pleasant to the eye. The ...

1. Preface Histogram control is not an original control. There are about 20-30 controls in the control range which are not original by themselves, but refer to the open source code on the Internet and tidy up and perfect themselves. The code of the plug-in has been added so that it can be integrated directly into QtDesigner or QtCreator.The mai ...

1. When zooming in View, it's better to use Matrix for control. Add the following when inheriting QGraphicsView: QWGraphicsView::QWGraphicsView(QWidget *parent):QGraphicsView(parent) //Here's the change (QWidget * parent): QGraphics View (parent) { //this->setMouseTracking(true); // m_im ...

Links to the original text: https://my.oschina.net/fuyajun1983cn/blog/263829 abstract The plasmoid will contain a text box and buttons.   Code . desktop file Each plasmoid nee ...

I. Multi-page Switching Components Multi-page switching in our daily use of software is very extensive, with good convenience, the following picture shows the convenience of multi-page use. You can see that different page contents appear when you click on different titles with the mouse.Multi-page switching component QTabWidget in A.QtQt provi ...

Part I jacky's consistent idea is to learn not from the surface, but from the essence. Technology is always philosophy. The video demo of this article is as follows: https://v.qq.com/x/page/v0890lmkjfo.html (1) Evolution history of PyQt5 To clarify what PyQt5 is, let's first briefly talk about what Qt is. 1. What is Qt? First, what is Qt abstra ...

1. Preface This control is named Mini Dashboard because it can be reduced to a very small area display. It is very suitable for small area display of instrument data. It can also be manually touched to adjust the progress. It is one of the most beautiful and compact controls I personally think.The fir ...

Joint Development of Qt and Opencv qt installation opencv installation qt configuration opencv environment Mat qimage inversion Yx_opencv_ImgChange class Opencv Image Change Yx_opencv_Enhance Class Opencv Image Geometric Transform Yx_opencv_Enhance Class Opencv Image Enhancement Yx_opencv_Geom Class ...

1. New Construction Select New Project - > Application - > Qt Widgets Application - > Choose in the Welcom interface Enter the project name Name, and select the project storage path, click Next. The next page continues to click Next (as the default project path, you decide not to check). Select Base class as Qwidget, enter Class name ...

Recent projects encountered the need to collect product barcode and two-dimensional code to save and display, and upload servers or enterprise ERP system, so for wireless and two-dimensional code scanner data acquisition test.The javelin itself is an input device, similar to keyboard input. Bar codes are ASCII characters, and the last character ...