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. 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 ...

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 ...

OpenCV Image Processing-Mat Object Common Method Preface Mat object and IplImage object Common constructors for Mat objects Common Methods of Mat Objects Preface The environment used in this article is: Qt5.11 + OpenCV3.4.6 Environment Installation Reference Document: https://blog.csdn.net/z6348 ...

I. Preface This control is mainly used as a simple picture browser. It can turn pages up and down to display pictures. Pictures can also turn on excessive effects such as transparency gradient, application scenarios such as viewing alarm pictures and running pictures. This control is not my original, from the network, I just revised a lot of BU ...

I. Preface In many graphics software, when switching pictures, you can bring animation transition or switching effect, which is more human-oriented. In fact, it is mainly dazzling, such as shutters, transparency changes, lower left corner flying in, etc. No matter how many kinds of effects, the core is around QPainter to carry out the correspon ...

Preface Ring progress bar, used to show the current progress, in order to meet the needs of large screen UI customization, there used to be a ring progress bar, which can not meet the needs of the project, can only be re-customized, the previous progress interval can not be self-adaptive resolution, and the current progress corresponding to the ...