Some qmake variables, functions, and conditions are hard to know their meanings. I list here for a memo. $$replace(variable, old_string, new_string): replace old_string in variable with new_string. $$unique(variable): remove duplicated […]
Percent symbols are confusing in Windows bat scripts because they are designed with different meanings in different situations. The most occurrences of percent symbols are like %xxx%, where xxx is […]
This seems an old topic. If you ever learned C programming language, you must know the search rules for the header files. The search rules of gcc for headers are […]
When you open the .pro file of a Qt project at the first time, you will be prompted to configure the project. The “Configure Project” dialog shows you the available […]
CSS overflow and overflow-wrap seem easy to understand, but I find no document gives you clear explanation. I mean you can understand their definition by reading those document, but only […]
You are taught by HTML books to make a button using the <button> tag. But you’ll soon be disappointed in real world because you can hardly find a button created […]
You may think it is easy to center text in div: tml> <head> </head> <body> <div style=”background-color:red;width:100px;height:100px;text-align:center;”> subscribe </div> </body> </html> In the above example, you want to use the […]
How to show div in one line with CSS? You know div is a block element which is shown on a separated line by default. Only inline elements such as […]
I do not know why I never considered when javascript code is executed on a webpage, but it is indeed an important issue. Consider the following example: <html> <head> <script> […]
I have been looking for a way to add javascript in wordpress post. This seems an advanced technique as in most cases you write text not code in a post. […]