The english ReactOS-Blog!

When I throw an exception, my program terminates with a “terminate called after throwing an instance of `…'” message

2009-11-09T13:18:00.001-04:00

Answer The function that throws the exception was called from C code, or code that was otherwise compiled without unwinding information. This affects gcc but not Visual C++: Visual C++ always generates full unwinding information. If you can recompile the C code in question, recompile it with the –fexceptions flag: this will enable the generation of unwinding information (disabled by default for

When I catch an exception, the exception message is always “Unknown exception” or “std::exception” instead of the correct message

2009-11-09T11:28:00.001-04:00

Answer You are catching std::exception (or another exception base class) by value. Catch by reference instead, to correctly catch instances of derived classes. This code will print “Unknown exception” (Visual C++) or “std::exception” (GNU g++): #include <stdexcept> #include <iostream> int main() { try { throw std::runtime_error("error message"); } catch(std::exception

GNU make fails on Windows with “multiple target patterns” or “target pattern contains no `%'”

2009-11-07T19:12:00.001-04:00

Answer You have a quoted Win32 absolute path in a makefile rule. Don’t use quotes: GNU make doesn’t support quoting at all, and you will never be able to use paths with spaces in them in GNU make. This is correct: target: X:\path\to\file @command $< $@ This will raise an error: target: "X:\path\to\file" @command $< $@ Why only absolute paths? It’s the colon after the drive letter. The

[ros-dev] Reactos and MinWin

2009-10-26T21:35:00.000-04:00

Gerard Murphy to the ros-dev-mailing-list: I’ve recently been taking an interest in MinWin, especially as it’s now visible in Windows 7, and I want to bring up the possibility of introducing something similar into ReactOS. I know some of you will be familiar with WinWin and I know at least one of you will know quite a bit more about it than I do, but for those who don’t here’s an overview.

Regarding UserAccounts in ReactOS

2009-10-03T16:22:00.000-04:00

Hi, many of you know we don't even support multiple Users at all, but I made some thoughts these days what way would be the best. I looked at the Linux and Windows ways and see pros and cons in both. Lets Compare them. Linux uses one root account with all rights you can get and as much restricted ones as you want. This has the problem that you need for some apps root rights to get them install/

RosBE 1.5

2009-09-27T13:19:00.004-04:00

Dreimer published this post at his blog: Hi, many ppl already asked me when RosBE 1.5 will be released. Well, there are some problems we first have to solve. As many ppl were able to watch in the #reactos, #reactos-dev and #reactos-rosbe chats, we had a hard time trying to build GCC 4.4.X on Windows. With "we" I mean, encoded, Colin and me. The results were billion different tries and almost the

NT-Architecture: What is.. Kernel- and User-Mode

2009-08-21T10:55:00.011-04:00

Most operatingsystems have programs for displaying CPU utilization. In Windows this program is “Task Manager”. The CPU-utilisation is generally displayed as a simple percentage of CPU time spent on non-idle-tasks. But this is just a simplification. The CPU spends time in two very distinct modes in every modern operating-system: Kernel-Mode The executing code in Kernel-Mode has unrestricted

News: Nexuiz runs on ReactOS!

2009-08-11T08:37:00.009-04:00

Nexuiz (an OpenSource-Ego-Shooter based at the DarkPlaces-Engine) runs on ReactOS since cgutman's commit from 2009/08/07: http://svn.reactos.org/svn/reactos?view=rev&revision=42467 Author: cgutman Log Message: - Call IoCompleteRequest to free IRPs created by IoBuildDeviceIoControlRequest - Fixes bug 4770 However, currently you are not able to play online because Nexuis doesn't download

Inside the mind of a ReactOS developer: implementing _SEH_prolog and _SEH_epilog (without making baby Jesus cry)

2009-08-10T08:33:00.001-04:00

Disclaimer This post is not for the faint of heart. This post assumes you know the C language (especially the Microsoft implementation), C compilers (especially Visual C++), what intrinsic functions are, what SEH is and how it works, and how to read x86 assembly. I could spend entire blog posts, no, entire blogs, just explaining you what the words alone mean, so I'll just go ahead and assume you

NT architecture: What is...an Architecture?

2009-08-08T20:21:00.019-04:00

Windows is a well known OS from the user point of view ( tell me your first game played wasn't winemine or solitaire under any of the Windows versions), also thanks to some interesting books as "Windows Internals 4th or 5th Edition" now you can begin understanding the internal behavior of Windows. ReactOS is an operating system which aims to have the same internal behavior than Windows, following