About code. Mostly on C++
Recently I’ve been asked how you can make method find of std::string case insensitive. An obvious solution is to transform the strings to lower case, for instance, and perform the search in lower case. The solution has some inconvenients and a clean and nice solution is defining custom traits that ignore the case. The solution I’m … Read more
If you want to find an item in a tree control (CTreeCtrl from MFC) by its name you need a recursive function. Below is a function that does that. How does it work: you pass the text of the item to search, the tree reference and an item in the tree. The function will search … Read more
The Oxford meeting of the ISO C++ standards committee between 15-20 April resulted in new features beeing into the draft paper of the C++0x standard. One of the features refer to Unicode support: a new header, called <cuchar>, was introduced. This header makes available new built-in types char16_t and char32_t, as well as new prefixes … Read more
I have decided to make a comparison for file IO operations on Win32, CRT, STL and MFC. For all four libraries/APIs I have done the profiling in the following way: open the file allocate the buffer used for reading start the timer read/write from/to the file stop the timer close the file release the memory … Read more
Working correctly with the Windows Registry might prove a little difficult, especially for beginners. One thing one should care about for example is using the correct access rights (not just the default ones) when creating a registry key. To ease the burden of directly using the Win32 registry API, I decided to wrap them inside … Read more
Suppose you have the following code: void foo() { throw std::runtime_error(“a foo exception!”); } int main() { foo(); } When running the program, the following window is popped up: When running it in the debugger, a different window is popped up: and the debugger takes you to the line of code that threw the exception. … Read more
In a previous post I explained than when you create a MFC application with the March CTP of ‘Orcas’ and add a command or split button to a dialog, the .rc file is not compiled, because styles such as BS_COMMANDLINK are not found. My workaround for the moment was to redeclare them in the resource.h … Read more
MFC in Orcas comes with several important changes, such as support for Vista specific command button and split button. I have put together a small demo application displaying a command button with the tex Say “Hello Vista” and the note “Click on this button to show a “Hello Vista” message!”. The command button is still … Read more
This is the title of my last article published on CodeGuru, http://www.codeguru.com/cpp/cpp/string/general/article.php/c13267/. Being active on forums like CodeGuru or MSDN I’ve seen so many times people using char* in places where a std::string would have made their life much easier. This is an error usually made by people coming from a C background, or those … Read more