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POPassing Data to Windows Console Control Handler
 

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    <p>I am working on writing a simple game engine and I am having trouble handling Windows console events; specifically, I cannot figure out how to pass custom data to the callback handler.</p> <p>I first call this code to specify my callback function:</p> <pre class="lang-c prettyprint-override"><code>SetConsoleCtrlHandler((PHANDLER_ROUTINE)WindowsSystemManager::ConsoleControlHandler, true); </code></pre> <p>My static-member callback function is defined as:</p> <pre class="lang-c prettyprint-override"><code>bool WINAPI WindowsSystemManager::ConsoleControlHandler(DWORD controlType){ if(controlType == CTRL_CLOSE_EVENT){ MessageBox(NULL, L"Close Event Captured", L"Close Event Captured", NULL); } return true; } </code></pre> <p>Everything works fine - when I click on the close button in the console, this MessageBox pops up. Only problem is, I need to call code that flushes a logging buffer to a log file on this type of shutdown (as well as other clean-up), and the Logger instance is a member in my WindowsSystemManager.</p> <p>I have dealt with a similar problem of passing custom data to window handles by using SetWindowLongPtr and GetWindowLongPtr successfully, but I can't find any information on how to do this type of thing with console control handlers. Any thoughts?</p> <p>EDIT: I got this functionality working based on MSalters' suggestions. The final code for the console control handler is here:</p> <pre class="lang-c prettyprint-override"><code>bool WINAPI WindowsSystemManager::ConsoleControlHandler(DWORD controlType){ BerserkEngine* engine = (BerserkEngine*)GetWindowLongPtr(GetConsoleWindow(), GWLP_USERDATA); if(controlType == CTRL_CLOSE_EVENT){ engine-&gt;~BerserkEngine(); PostQuitMessage(0); } return true; } </code></pre> <p>Where I set this custom data pointer in the WindowsSystemManager constructor:</p> <pre class="lang-c prettyprint-override"><code>SetWindowLongPtr(GetConsoleWindow(), GWL_USERDATA, (LONG_PTR)this-&gt;engine); </code></pre>
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