{"id":29703,"date":"2006-09-18T10:00:01","date_gmt":"2006-09-18T10:00:01","guid":{"rendered":"https:\/\/blogs.msdn.microsoft.com\/oldnewthing\/2006\/09\/18\/sometimes-my-psychic-powers-are-weak\/"},"modified":"2006-09-18T10:00:01","modified_gmt":"2006-09-18T10:00:01","slug":"sometimes-my-psychic-powers-are-weak","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/oldnewthing\/20060918-01\/?p=29703","title":{"rendered":"Sometimes my psychic powers are weak"},"content":{"rendered":"
\n

\nWhy does my MFC program exit unexpectedly?\nThe stack trace at the point we hit ExitInstance<\/code>\ngoes like this:\n<\/p>\n

\nCClientConsoleApp::ExitInstance\nCWinThread::Run+0x88\nAfxWinMain+0x84\n_wWinMainCRTStartup+0x138\nBaseThreadInitThunk+0xe\n_RtlUserThreadStart+0x23\n<\/pre>\n
\nThanks.\n<\/p>\n<\/blockquote>\n
\nYou can already see some of what’s going on, but clearly\nmore information is needed.\nMy first psychic suggestion was to examine MFC’s message\npump to see what causes it to exit.\nThen follow the money backwards.\n<\/p>\n
\nThat’s what we want to know and what we want to find out.\n<\/p><\/blockquote>\n
\nMFC comes with source code so you can do this yourself.\nDon’t expect somebody to do your debugging for you.\nYou have the tools to do it yourself:\nYou have the source code and you have a brain.\n<\/p>\n
\nOnce you figure out what conditions make MFC’s message pump exit,\nthen try to figure out which of those conditions is actually\noccurring, and then set breakpoints to try to catch the\ncondition being achieved.\n<\/p>\n
\nI don’t have the MFC source code memorized and I didn’t feel\nlike installing it just to help somebody solve their own problem,\nso I resorted to wild guessing in the guise of psychic powers:\n<\/p>\n
\nI don’t know what MFC’s message pump looks like\nbut my psychic powers tell me that it stops when it gets a\nWM_QUIT<\/code> message.\nMy psychic powers are losing strength\nfrom being so heavily stressed so early in the morning…\nI see a shadow, a vague form,\nit’s not all that clear, kind of hazy,\nit might be… yes I think it says\n“PostQuitMessage<\/code>“…\nhard to tell… connection fading…\n<\/p><\/blockquote>\n
\n(Sorry, I can’t finish up this story with a snappy ending.\nIt happened so long ago I forget what the problem was.)<\/p>\n","protected":false},"excerpt":{"rendered":"
Why does my MFC program exit unexpectedly? The stack trace at the point we hit ExitInstance goes like this: CClientConsoleApp::ExitInstance CWinThread::Run+0x88 AfxWinMain+0x84 _wWinMainCRTStartup+0x138 BaseThreadInitThunk+0xe _RtlUserThreadStart+0x23 Thanks. You can already see some of what’s going on, but clearly more information is needed. My first psychic suggestion was to examine MFC’s message pump to see what causes […]<\/p>\n","protected":false},"author":1069,"featured_media":111744,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-29703","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oldnewthing","tag-other"],"acf":[],"blog_post_summary":"
Why does my MFC program exit unexpectedly? The stack trace at the point we hit ExitInstance goes like this: CClientConsoleApp::ExitInstance CWinThread::Run+0x88 AfxWinMain+0x84 _wWinMainCRTStartup+0x138 BaseThreadInitThunk+0xe _RtlUserThreadStart+0x23 Thanks. You can already see some of what’s going on, but clearly more information is needed. My first psychic suggestion was to examine MFC’s message pump to see what causes […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts\/29703","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/users\/1069"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/comments?post=29703"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts\/29703\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/media\/111744"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/media?parent=29703"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/categories?post=29703"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/tags?post=29703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}