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1. binary tree traversal DefinitionTraversing a binary tree means accessing all nodes in the binary tree in a certain order, so that each node is accessed only once. The "access" mentioned here refers to a certain operation on the node, which can be

In mature commercial software such as Origin, the layering function is essential for Drawing Images with multiple scales. CChart currently contains two types of views with hierarchical functions. A hierarchical view is called. All layers in this

I recently went to C ++ 11 and downloaded the latest version of MinGW gcc4.8.1, but found that the Manual Installation of Manual Installation in the official help document of HOWTO Install the MinGW (GCC) Compiler Suite was found) the version is

Snail bait 650) this. width = 650; "onclick = 'window. open (" http://blog.51cto.com/viewpic.php? Refimg = "+ this. src) 'height = "19" alt = "" src = "http://www.bkjia.com/uploads/allimg/131228/1U63a009-0.gif" width = "19" border = "0"/>] Everybody

When a project is bound to a Datagridview, a field in the table is the primary key of the primary key table, but you want to display the value corresponding to the primary key, for example: when designing a customer management project, the customer

Recently, I was involved in an xmpp protocol-related project. I need to find an xmpp library under c to help with development. The c library on xmpp.org is poor. Iksemel is too low-level, and is an xml parser. It only supports jabber. You must write

A few days ago, I found that my program uses the non-modal dialog box. The Debug version has the following warning: Warning: calling DestroyWindow in CWnd ::~ CWnd OnDestroy or PostNcDestroy in derived class will not be called Because it was

In the previous section, we have added QAction to the menu and toolbar. Now we need to add some images to beautify the image, and then add the signal slot so that our actions can be matched! First, add the icon. The QAction icon is displayed in

I haven't updated my blog for a long time, mainly because the company is still accepting some items, so I haven't updated it in time. I am also writing a graph program based on Qt, which is basically similar to PS. It mainly uses Qt Graphics View

I have mentioned several standard dialogs. I do not intend to continue to describe the use of some components, because these are difficult to complete and many things are related to the actual application. The complexity of the actual application

I have a lot of feelings when I participate in the software training of industrial logic.Just like agility, a founder also said that agility is actually not mysterious. After several years of software development, a brain-loving programmer will

In object-oriented programming, a class is an abstraction of things, and it is not a physical object. Therefore, this article describes how a Class Object achieves suicide; the reason for the improvement to the class level is that the function

This part ends with the Qt event. We have previously learned about the event mechanism of Qt. The following describes how to customize events.Qt allows you to create your own event types, which is particularly useful in multi-threaded programs. Of

Today, to test the audio of the EVB board, I transplanted Madplay to the Embedded Development Board. PC: Linux-2.6.18 SourceCode: libid3tag-0.15.1b.tar.gz zlib-1.1.4.tar.gz libmad-0.15.1b.tar.gz madplay-0.15.2b.tar.gz statement: 1. The working

During code writing, the program needs to read the secondary node under the root node of CTreeViewCtrl and generate the child menu to add it to the right-click menu of the leaf list. The actual operation is as follows:1) Delete the original menuThis

Some time ago, my notebook broke down and I haven't updated my blog. Now I have finished it. Let's continue with the Qt learning path series! Next we will talk about another item view class, QTreeWidget. As the name suggests, this class is used to

This was originally an email discussion between me and my friends. The core idea is how our programmers view locks and queues under the current multi-task model, and how to view the real-world solution of multi-process and multi-thread communication.

Recently, we have been dealing with data communication between multiple processes (basically one server and multiple clients), and the communication data is video data, which is large in size and has been weighed repeatedly, decide to use FIFO for

I haven't been writing a blog for a long time. I 've been helping my colleagues get a spring-mvc project. Today I 've finished my job, but I have to start flex 4 in the company, it may take some time! Next, the last time we talked about the drag and

In the previous example, we used the drag-and-drop object QMimeData provided by the system to store drag-and-drop data. For example, we used QMimeData: setText () to create a Text object and QMimeData: urls () to create a URL object. However, if you