{"id":18511,"date":"2022-11-01T02:58:00","date_gmt":"2022-10-31T21:28:00","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-unable-to-change-menu-bitmap\/"},"modified":"2022-11-01T02:58:00","modified_gmt":"2022-10-31T21:28:00","slug":"solved-unable-to-change-menu-bitmap","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-unable-to-change-menu-bitmap\/","title":{"rendered":"[Solved] Unable To Change Menu Bitmap"},"content":{"rendered":"

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My Bad!<\/em> I forgot to declare hMenu<\/code> as a static<\/em> variable. Because of that, I was losing my menu handle. That’s why SetMenuItemInfo()<\/code> would not work later, in the command code blocks. I knew that it had to be something simple.<\/p>\n

Anyway, here are the final bits of code. First, the creation of the Max\/Restore buttons:<\/p>\n

WINDOWPLACEMENT   wp;\nwp.length = sizeof(WINDOWPLACEMENT);\nGetWindowPlacement(hWnd, &wp);\nif(wp.showCmd==SW_SHOWNORMAL){    mII.wID=ID_MENUBAR_MAX;      mII.hbmpItem=hMBB.max; }\nif(wp.showCmd==SW_SHOWMAXIMIZED){ mII.wID=ID_MENUBAR_RESTORE;  mII.hbmpItem=hMBB.restore; }\nInsertMenuItem(hMenu, NUMMI+2, TRUE, &mII);\n<\/code><\/pre>\n
Here is the handling of the commands:<\/p>\n
case ID_MENUBAR_MAX:\n     SendMessage(hWnd, WM_SYSCOMMAND, SC_MAXIMIZE, 0);\n     return 0;\n\ncase ID_MENUBAR_RESTORE:\n     SendMessage(hWnd, WM_SYSCOMMAND, SC_RESTORE, 0);\n     return 0;\n<\/code><\/pre>\n
Finally, I handled the changing of the menu button by hooking WM_SYSCOMMAND<\/code>.  That way, the button would change, even if the command came through the system menu, or some other system command:<\/p>\n
case WM_SYSCOMMAND: {\n     auto sysResult = DefWindowProc(hWnd, WM_SYSCOMMAND, wParam, lParam);\n     if(wParam==SC_MAXIMIZE) {\n         mII.cbSize = sizeof(MENUITEMINFO);\n         mII.fMask = MIIM_ID | MIIM_BITMAP;\n         mII.wID = ID_MENUBAR_RESTORE;\n         mII.hbmpItem = hMBB.restore;\n         SetMenuItemInfo(hMenu, NUMMI+2, TRUE, &mII);\n         DrawMenuBar(hWnd);\n       }\n      if(wParam==SC_RESTORE) {\n          mII.cbSize = sizeof(MENUITEMINFO);\n          mII.fMask = MIIM_ID | MIIM_BITMAP;\n          mII.wID = ID_MENUBAR_MAX;\n          mII.hbmpItem = hMBB.max;\n          SetMenuItemInfo(hMenu, NUMMI+2, TRUE, &mII);\n          DrawMenuBar(hWnd);\n        }\n       return sysResult;\n }\n<\/code><\/pre>\n
Note:  It is important to call DefWindowProc<\/code> whenever adding anything to system or non-client commands.  Use the command title for the message parameter.  The typedef auto<\/code> is used, to handle whatever variable that the function returns.<\/p>\n<\/p><\/div>\n
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            0<\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Unable To Change Menu Bitmap <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] My Bad! I forgot to declare hMenu as a static variable. Because of that, I was losing my menu handle. That’s why SetMenuItemInfo() would not work later, in the command code blocks. I knew that it had to be something simple. Anyway, here are the final bits of code. First, the creation of the … 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":[324,683],"class_list":["post-18511","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-winapi"],"yoast_head":"\n[Solved] Unable To Change Menu Bitmap - 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-unable-to-change-menu-bitmap\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Unable To Change Menu Bitmap - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] My Bad! I forgot to declare hMenu as a static variable. Because of that, I was losing my menu handle. That’s why SetMenuItemInfo() would not work later, in the command code blocks. I knew that it had to be something simple. Anyway, here are the final bits of code. First, the creation of the ... 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