How to build Qt 4.8 64 bit with MingW?
To build Qt 4.8 with MingW, you have to use a proper MingW version. The latest MingW won’t build Qt 4.8. You will get weird problems such as “qsimd.cpp:296:23: error: […]
Access property of Javascript object
How to define a Javascript object? The key of an object can be an identifier/symbol(an identifier is a continuous alphabeta/number/_ that does not begin with a number), a number, or […]
The onclick attribute of submit input and the onsubmit attribute of form
A form typically has an input button of the type sumbit; clicking the submit input button may trigger the posting of the form. The submit input button can have an […]
Network request initiators
When you type a url such as myprogrammingnotes.com in Firefox’s address bar and type the enter key, the browser will send many http requests to the network. These requests are […]
How to write a firefox extension that reloads page automatically?
Creating a Firefox extension that automatically reloads a page can be accomplished using the WebExtensions API provided by Firefox. To write a firefox addon, you need to at least write […]
Firefox extension icon not showing
You must know how to add an icon for a firefox extension: “browser_action”: { “default_popup”: “popup.html”, “default_icon”: { “16”: “icon16.png”, “48”: “icon48.png”, “128”: “icon128.png” }, “default_title”:”hello world”, } You expect […]
Protocol error (Error): Extension is invalid from: server0.conn0.webExtensionDescriptor40 (resource://gre/modules/addons/XPIInstall.sys.mjs)
If you are developing a firefox extension, you might get this error after you edit the manifest.json file and reload the extension. It indicates some error in the manifest, e.g., […]
How to know the version of Visual Studio used to develop a project?
For your own project, sure you know what Visual Studio version you are using to develop it. But for other projects downloaded from the Internet such as github, how to […]
What is the difference between find_package(podofo CONFIG REQUIRED) and find_package(podofo REQUIRED)?
If your project is about to link to a lib, you probably need to use the find_package command of CMake. find_package(libname CONFIG REQUIRED) or, find_package(libname REQUIRED) What is the difference […]
How to enable c++17 for CMake?
Now, I got this error when building using CMake: error C2039: ‘string_view’: is not a member of ‘std’ string_view is a new feature of C++17 which must be enabled for […]