// Oprogramowanie Roman Ryltsov
Source code availability
A colleague pointed out that code snippet in previous post is misusing ATL’s ATLENSURE_SUCCEEDED macro making it [possibly] evaluate its argument twice in case of failure, that is evaluating into failure HRESULT code. As it is defined like this: #define ATLENSURE_SUCCEEDED(hr) ATLENSURE_THROW(SUCCEEDED(hr), hr) It does things in a straightforward way, for a code line ATLENSURE_SUCCEEDED(pFilterGraph.CoCreateInstance(CLSID_FilterGraph));…
Automatic Snapshots runs as a background application monitors clipboard. Should a new image be copied there, the utility automatically writes the image into a file. The process does not require any user interaction and is completely automatic so that – per Mike Westen‘s request – user could quickly and easily create snapshots of a multitude…
If you dare to convert your C++ ATL Service project created with an earlier version of Visual Studio to version 2010, as I recently did, you might find yourself surprised with why the hell the bloody thing does not work anymore as a regular executable. After passing compiler/linker and SDK update issues, which you possibly…
A really long and annoying troubleshooting of a problem finally ended with a bug found in GetAdaptersInfo/GetAdaptersAddresses API. It may unexpectedly fail under the following conditions: 32-bit application 64-bit operating system or /3GB feature enabled on 32-bit operating system hosting process is linked with /LARGEADDRESSAWARE flag or has otherwise set it in binary header over…
It is as stupid as it sounds: you can add RBBS_NOGRIPPER flag to a rebar band to implement “lock controls” feature, but as soon as you start removing it – you miserably fail. A related thread on WTL group is dated year 2006. You can find the same dated 2003. Now it’s 2011 and it’s…
Windows Vista introduced new synchronization API: slim reader/writer (SRW) locks. Being already armed with critical sections, one perhaps would not desperately need an SRW lock, but still it offers a great option to provide both exclusive (critical section alike) mode and shared mode when 2+ threads can enter protected section simultaneously. Some time earlier, I…
Previous post on thread synchronization and context switches used number of thread context switches as one of the performance indicators. One might have hard times getting the number from operating system though. The only well documented access to amount of context switches seems to be accessing corresponding performance counters. Thread performance counter will list available…