\n The IsDialogMessage function works even if you aren’t a dialog. As long as your child\n windows have the WS_TABSTOP and\/or WS_GROUP styles, they can be navigated as if they\n were part of a dialog box. One caveat is that IsDialogMessage will send DM_GETDEFID\n and DM_SETDEFID messages to your window, which are message numbers WM_USER and WM_USER+1,\n so you should avoid using those messages in your window procedure for some other purpose.\n <\/p>\n
\n These changes to our scratch program illustrate how you can use the TAB key to navigate\n within a non-dialog.\n <\/p>\n
HWND g_hwndLastFocus;\nvoid OnSetFocus(HWND hwnd, HWND hwndOldFocus)\n{\n if (g_hwndLastFocus) {\n SetFocus(g_hwndLastFocus);\n }\n}\nvoid OnActivate(HWND hwnd, UINT state,\n HWND hwndActDeact, BOOL fMinimized)\n{\n if (state == WA_INACTIVE) {\n g_hwndLastFocus = GetFocus();\n }\n}\n\/\/ Just display a messagebox so you can see something\nvoid OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify)\n{\n switch (id) {\n case 100:\n MessageBox(hwnd, TEXT(\"Button 1 pushed\"),\n TEXT(\"Title\"), MB_OK);\n break;\n case 101:\n MessageBox(hwnd, TEXT(\"Button 2 pushed\"),\n TEXT(\"Title\"), MB_OK);\n break;\n case IDCANCEL:\n MessageBox(hwnd, TEXT(\"Cancel pushed\"),\n TEXT(\"Title\"), MB_OK);\n break;\n }\n}\nBOOL\nOnCreate(HWND hwnd, LPCREATESTRUCT lpcs)\n{\n HWND hwndChild =\n CreateWindow(\n TEXT(\"button\"), \/* Class Name *\/\n TEXT(\"Button &1\"), \/* Title *\/\n WS_CHILD | WS_VISIBLE | WS_TABSTOP |\n BS_DEFPUSHBUTTON | BS_TEXT, \/* Style *\/\n 0, 0, 100, 100, \/* Position and size *\/\n hwnd, \/* Parent *\/\n (HMENU)100, \/* Child ID *\/\n g_hinst, \/* Instance *\/\n 0); \/* No special parameters *\/\n if (!hwndChild) return FALSE;\n g_hwndLastFocus = hwndChild;\n hwndChild =\n CreateWindow(\n TEXT(\"button\"), \/* Class Name *\/\n TEXT(\"Button &2\"), \/* Title *\/\n WS_CHILD | WS_VISIBLE | WS_TABSTOP |\n BS_PUSHBUTTON | BS_TEXT, \/* Style *\/\n 100, 0, 100, 100, \/* Position and size *\/\n hwnd, \/* Parent *\/\n (HMENU)101, \/* Child ID *\/\n g_hinst, \/* Instance *\/\n 0); \/* No special parameters *\/\n if (!hwndChild) return FALSE;\n hwndChild =\n CreateWindow(\n TEXT(\"button\"), \/* Class Name *\/\n TEXT(\"Cancel\"), \/* Title *\/\n WS_CHILD | WS_VISIBLE | WS_TABSTOP |\n BS_PUSHBUTTON | BS_TEXT, \/* Style *\/\n 200, 0, 100, 100, \/* Position and size *\/\n hwnd, \/* Parent *\/\n (HMENU)IDCANCEL, \/* Child ID *\/\n g_hinst, \/* Instance *\/\n 0); \/* No special parameters *\/\n if (!hwndChild) return FALSE;\n return TRUE;\n}\n\/\/ Add to WndProc\n HANDLE_MSG(hwnd, WM_COMMAND, OnCommand);\n HANDLE_MSG(hwnd, WM_ACTIVATE, OnActivate);\n HANDLE_MSG(hwnd, WM_SETFOCUS, OnSetFocus);\n \/\/ Add blank case statements for these to ensure we don't use them\n \/\/ by mistake.\n case DM_GETDEFID: break;\n case DM_SETDEFID: break;\n\/\/ Change message loop\n MSG msg;\n while (GetMessage(&msg, NULL, 0, 0)) {\n if (IsDialogMessage(hwnd, &msg)) {\n \/* Already handled by dialog manager *\/\n } else {\n TranslateMessage(&msg);\n DispatchMessage(&msg);\n }\n }\n<\/pre>\n\n One subtlety is the additional handling of the WM_ACTIVATE and WM_SETFOCUS messages\n to preserve the focus when the user switches away from the window and back. Notice\n also that we picked Button 1 as our initial default button by setting it with the\n BS_DEFPUSHBUTTON style.\n <\/p>\n
\n Observe that all the standard dialog accelerators now work. The TAB key navigates,\n the Alt+1 and Alt+2 keys act as accelerators for the two buttons, the Enter key presses\n the default button, and the ESC key pushes the Cancel button since its control ID\n is IDCANCEL.\n <\/p>\n","protected":false},"excerpt":{"rendered":"
The IsDialogMessage function works even if you aren’t a dialog. As long as your child windows have the WS_TABSTOP and\/or WS_GROUP styles, they can be navigated as if they were part of a dialog box. One caveat is that IsDialogMessage will send DM_GETDEFID and DM_SETDEFID messages to your window, which are message numbers WM_USER and […]<\/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-42083","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oldnewthing","tag-code"],"acf":[],"blog_post_summary":"
The IsDialogMessage function works even if you aren’t a dialog. As long as your child windows have the WS_TABSTOP and\/or WS_GROUP styles, they can be navigated as if they were part of a dialog box. One caveat is that IsDialogMessage will send DM_GETDEFID and DM_SETDEFID messages to your window, which are message numbers WM_USER and […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts\/42083","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=42083"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/posts\/42083\/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=42083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/categories?post=42083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/oldnewthing\/wp-json\/wp\/v2\/tags?post=42083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}