{"id":27880,"date":"2022-12-27T06:44:18","date_gmt":"2022-12-27T01:14:18","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-winapi-iswindow-return-false-closed\/"},"modified":"2022-12-27T06:44:18","modified_gmt":"2022-12-27T01:14:18","slug":"solved-winapi-iswindow-return-false-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-winapi-iswindow-return-false-closed\/","title":{"rendered":"[Solved] WINAPI IsWindow return false [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-46954369\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"46954369\" data-parentid=\"46947312\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Are you sure you have the correct handle value? Assuming your thread is on the <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/msdn.microsoft.com\/en-us\/library\/windows\/desktop\/ms681928(v=vs.85).aspx\">same desktop<\/a> as the other window it is guaranteed to work correctly. If it returns false then the <code>HWND<\/code> is not valid because A) your <code>HWND<\/code> variable contains a numerical value that is not a valid <code>HWND<\/code>, or B) timing issues where the window is destroyed while you are calling the function.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved WINAPI IsWindow return false [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Are you sure you have the correct handle value? Assuming your thread is on the same desktop as the other window it is guaranteed to work correctly. If it returns false then the HWND is not valid because A) your HWND variable contains a numerical value that is not a valid HWND, or B) &#8230; <a title=\"[Solved] WINAPI IsWindow return false [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-winapi-iswindow-return-false-closed\/\" aria-label=\"More on [Solved] WINAPI IsWindow return false [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[683],"class_list":["post-27880","post","type-post","status-publish","format-standard","hentry","category-solved","tag-winapi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] WINAPI IsWindow return false [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-winapi-iswindow-return-false-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] WINAPI IsWindow return false [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Are you sure you have the correct handle value? Assuming your thread is on the same desktop as the other window it is guaranteed to work correctly. If it returns false then the HWND is not valid because A) your HWND variable contains a numerical value that is not a valid HWND, or B) ... 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