\nSometimes you need a quick and dirty window\nand you don’t want to\ngo through all the hassle of registering a class for it.\nFor example, you might need a window to do a brief snippet of DDE,\nor you just need a window to own a message box.\n<\/p>\n
\nTo save yourself the trouble of registering a class for every single\nweenie thing you might need a window for,\nyou can get lazy and register a single “scratch window” class\nand simply subclass it on an as-needed basis.\n<\/p>\n
\nATOM RegisterScratchWindowClass(void)\n{\n WNDCLASS wc = {\n 0, \/\/ style\n DefWindowProc, \/\/ lpfnWndProc\n 0, \/\/ cbClsExtra\n 0, \/\/ cbWndExtra\n g_hinst, \/\/ this file's HINSTANCE\n NULL, \/\/ hIcon\n LoadCursor(NULL, IDC_ARROW), \/\/ hCursor\n (HBRUSH)(COLOR_BTNFACE+1), \/\/ hbrBackground\n NULL, \/\/ lpszMenuName\n TEXT(\"Scratch\"), \/\/ lpszClassName\n };\n return RegisterClass(&wc);\n}\nHWND\nCreateScratchWindow(HWND hwndParent, WNDPROC wp)\n{\n HWND hwnd;\n hwnd = CreateWindow(TEXT(\"Scratch\"), NULL,\n hwndParent ? WS_CHILD : WS_OVERLAPPED,\n\t 0, 0, 0, 0, hwndParent, NULL, NULL, NULL);\n if (hwnd) {\n SubclassWindow(hwnd, wp);\n }\n return hwnd;\n}\n<\/pre>\n\nNow if you need a quick one-off window, you can just create\na scratch window instead of creating a custom window class\njust to handle that specific task.\n<\/p>\n
\nWe’ll see the scratch window in action soon.<\/p>\n","protected":false},"excerpt":{"rendered":"
Sometimes you need a quick and dirty window and you don’t want to go through all the hassle of registering a class for it. For example, you might need a window to do a brief snippet of DDE, or you just need a window to own a message box. To save yourself the trouble of […]<\/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":[25],"class_list":["post-36313","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oldnewthing","tag-code"],"acf":[],"blog_post_summary":"
Sometimes you need a quick and dirty window and you don’t want to go through all the hassle of registering a class for it. For example, you might need a window to do a brief snippet of DDE, or you just need a window to own a message box. To save yourself the trouble of […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts\/36313","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=36313"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts\/36313\/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=36313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/categories?post=36313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/tags?post=36313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}