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POWhat is the nicest way to close FreeGLUT?
 

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  1. POWhat is the nicest way to close FreeGLUT?
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    <p>I'm really having trouble closing my console application with FreeGLUT.</p> <p>I would like to know what the best way is to take every possible closing, because I don't want any memory leaks (I'm pretty afraid of those).</p> <p>So I already tried the following, which is giving me an exception like this:</p> <blockquote> <p>First-chance exception at 0x754e6a6f in myProject.exe: 0x40010005: Control-C.</p> </blockquote> <pre><code>int main(int argc, char **argv) { if( SetConsoleCtrlHandler( (PHANDLER_ROUTINE) CtrlHandler, true) ) { // more code here as well .... glutCloseFunc(close); // set the window closing function of opengl glutMainLoop(); close(); // close function if coming here somehow } else { return 1; } return 0; } void close() { // keyboardManager is a pointer to a class // which I want to delete, so no memory will leak. if(keyboardManager) // do I need this check? delete keyboardManager; } bool CtrlHandler(DWORD fdwCtrlType) { switch(fdwCtrlType) { // Handle the CTRL-C signal. case CTRL_C_EVENT: // and the close button case CTRL_CLOSE_EVENT: close(); return true; // Pass other signals to the next handler. case CTRL_BREAK_EVENT: return false; // delete the pointer anyway case CTRL_LOGOFF_EVENT: case CTRL_SHUTDOWN_EVENT: default: close(); return false; } } </code></pre> <p>So what goes right is:</p> <ol> <li>Closing the window of glut</li> <li>Closing the console application with the <code>x</code></li> <li>Closing my window of glut with my keyboardmanager <code>if(keyboardManager-&gt;isKeyDown[27]) glutExit();</code></li> </ol> <p>What goes wrong is:</p> <ol> <li>Closing the console application with CTRL+C, it gives the exception from above.</li> </ol> <p>This is in Visual Studio 2008 C++.</p> <p><em>UPDATE</em></p> <p>I found that the exception is thrown, because I'm in debug. So that won't be a problem. But the question is still open: <em>What is the most elegant way to actually close glut?</em></p> <p><code>atexit()</code> seems to work as well, so maybe I can use this?</p>
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    1. COYou don't need to worry about freeing memory when your program shuts down, the OS reclaims everything and nothing leaks. Persistent resources like files should still be cleaned up properly of course.
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    2. CO`atexit()` probably won't solve your problem of C++ objects cleanup.
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    3. CO@Ben, @wilhelmtell: But I should clear my keyboardManager object for example, because my Progam holds a pointer to it, right?
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