Normally, Qt process will terminate child process created with QProcess when the parent process exits, even you do not explicitly call the terminate or kill function of the child QProcess […]
To delete a layout from its containing layout, you may use parentlayout->removeItem(childlayout); However, the widgets on the child layout remain visible. Layout has no setVisible or hide method for you […]
If you deploy your Qt program to another host, you may get this error when running the program on that computer: This application failed to start because it could not […]
For not once, I encounter this problem: curl_exec returns false but curl_getinfo returns a valid object. I even see the http_code=200 and header_size is a good number. Why curl_exec always […]
I used the following code to convert html to plain text: QTextDocument doc; doc.setHtml( html); QString txt= doc.toPlainText(); Things went well until one day the program hang. After debugging, it […]
$dom = new DOMDocument(); $dom->load(“test.xml”); $text=$dom->getElementsByTagName(“Name”)->item(0)->nodeValue; The above code lines get the text between <Name></Name> Suppose the text between the tags is: <Name>http://myprogrammingnotes.com/index.php?p1=value1&p2=http%3A%2F%2Fgoogle.com</Name> what would $text be? Is $text “http://myprogrammingnotes.com/index.php?p1=value1&p2=http%3A%2F%2Fgoogle.com” […]
\b is kind of special, it is not a character, neither a class of characters. It represents a change from a word character(letters, numbers, underscore) to a non-word character(or end […]
First, note that the function name is getElementById, not getElementByID, or getElementsById. Second, this function is a member of DOMDocument, not DOMElement. If you get a DOMElement parent and try […]
Javascript has a function called querySelector, which is used to get the dom object of an element based on some condition specified as the parameter of the function, such as […]
A Qt project typically has some source files, header files, and a .pro file(project file) in a directory. If you copy a whole project directory that has been built to […]