C / C++ / MFC

FirstPrevNext

Re: Winsock - discovering ip address markkuk12-Jul-02 8:21 markkuk 12-Jul-02 8:21  I would like to program the device to reply to a message broadcast from my application (laptop) and set it's ip address accordingly. This is essentially what DHCP or BOOTP does. Install a DHCP server on the laptop, and configure the device to get its net address by DHCP. Re: Winsock - discovering ip address JohnnyG13-Jul-02 15:41 JohnnyG 13-Jul-02 15:41  Thanks for the reply. You're right that would probably be the easiest thing to do but setting up a DHCP server on every laptop wouldn't be that easy. Marquee in visual C++ John Duffell12-Jul-02 3:58 John Duffell 12-Jul-02 3:58  I am trying to create a simple dialog box with scrolling horizontal text (marquee) in Visual C++. I feel like I've seen a really easy method somewhere but can't remember. Any help would be appreciated Thank you Re: Marquee in visual C++ l a u r e n12-Jul-02 7:50 l a u r e n 12-Jul-02 7:50  there isnt any easy function in mfc or c++ to do that but its not too hard to scroll text across a static control on a timer interval there are a number of classes here to do that ... they might be useful if you decide to write your own "... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away" sonork: 100.18128   8028finder.com Re: Marquee in visual C++ NormDroid12-Jul-02 23:29 NormDroid 12-Jul-02 23:29  Scrolling text my forte: Many ways to skin a cat. Using TextOut and SetBoundsRect and select clipping regions give optimal scrolling. Also you can use ScrollWindow and paint the bits uncovered. Normski. - Professional Windows Programmer Sorting items in a listctrl Niko Tanghe12-Jul-02 3:47 Niko Tanghe 12-Jul-02 3:47  For sorting a listcontrol on header-click, I use the following code: But the condition if (iIndex1 == iIndex2) in CompareItems is always true. The callback func is always called to compare an item with the same item. And this happens for each item in the list.... Anyone already seen this behaviour? Any solve for this ? Greetings, Niko //Sorting static int CALLBACK CompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort) { if(!lParamSort) return 0; CListCtrlEx* pListCtrl = (CListCtrlEx*) lParamSort; ASSERT_VALID(pListCtrl); return pListCtrl->CompareItems( lParam1, lParam2); } void CListCtrlEx::SortOnCol(int iCol) { if(m_iSelColumn == iCol) m_iSortDirection = -m_iSortDirection; else { m_iSelColumn = iCol; m_iSortDirection = 1; } //Set callback SortItems( CompareFunc, (DWORD)this ); //Show first Item int iItem = GetNextItem(-1, LVNI_SELECTED); if (iItem > 0) EnsureVisible(iItem,true); } int CListCtrlEx::CompareItems(int iIndex1, int iIndex2) { const int iMaxSortCol = 100; char szBuf1[iMaxSortCol]; memset(szBuf1,0x00,sizeof(szBuf1)); char szBuf2[iMaxSortCol]; memset(szBuf2,0x00,sizeof(szBuf2)); if (iIndex1 == iIndex2) return 0; //Shouldn't be possible LV_FINDINFO FI; FI.flags = LVFI_PARAM; FI.lParam = iIndex1; iIndex1 = FindItem( &FI); if(iIndex1<0) return 0; GetItemText( iIndex1, m_iSelColumn, szBuf1, iMaxSortCol-1 ); FI.lParam = iIndex2; iIndex2 = FindItem( &FI); if(iIndex2<0) return 0; GetItemText( iIndex2, m_iSelColumn, szBuf2, iMaxSortCol-1 ); return m_iSortDirection*strcmp(szBuf1, szBuf2); } void CListCtrlEx::OnColumnclick(NMHDR* pNMHDR, LRESULT* pResult) { CWaitCursor Wait; NM_LISTVIEW* pNM = (NM_LISTVIEW*)pNMHDR; // TRACE("Clicked on column %d - Sorting: %s.\r\n", pNM->iSubItem, ((m_iSortDirection == m_iSortDirectionDsc)?"DSC":"ASC" )); SortOnCol(pNM->iSubItem); *pResult = 0; } Re: Sorting items in a listctrl KaЯl12-Jul-02 4:08 KaЯl 12-Jul-02 4:08  How do you set the item data of a list item ? We do not inherit the Earth from our ancestors. We borrow it from our children. Antoine de Saint Exupéry (1900-1944) Re: Sorting items in a listctrl Mike Upton12-Jul-02 4:17 Mike Upton 12-Jul-02 4:17  The values you're passing into the CListCtrlEx::CompareItems() method are the item data values of the items to be compared, not their indexes (which you've obviously realised, because your code is using FindItem to search for the LPARAM - sorry for stating the obvious!). Are you sure that the item data values are set correctly and uniquely for each list item? "We are the knights who say Ni" (The Knights Who Say Ni) Re: Sorting items in a listctrl Niko Tanghe12-Jul-02 4:54 Niko Tanghe 12-Jul-02 4:54  Thank you for your help, That was 'obviously' the problem... Greetings, Niko Re: Knowing Client Window Messages in MDI Window ... Mike Upton12-Jul-02 3:48 Mike Upton 12-Jul-02 3:48  If you're after every single message, you might be interested in PreTranslateMessage(). It's called in the window that receives the message, which then calls PreTranslateMessage in its parent window, all the way up to the main frame window. "We are the knights who say Ni" (The Knights Who Say Ni) Seems to work, but not all messages... Cursoe12-Jul-02 20:01 Cursoe 12-Jul-02 20:01  Seems to work, but not all messages. For example, when I press Ctrl+4, or any other SysCommand, the Frame Window doesn't get any message. What I basically want to do is monitor inter-mdichild messages (switching windows, closing a window, etc). It seems that the messages stop at the Client Window and doesn't travel up to the Frame Window. Some other ideas Re: Knowing Client Window Messages in MDI Window ... Mike Upton12-Jul-02 3:52 Mike Upton 12-Jul-02 3:52  Another thought - the article Meandering Through the Maze of MFC Message and Command Routing by Paul DiLascia is incredibly useful if you need to know exactly what's going on with all your messages in an MFC app. Solved all sorts of problems for me! "We are the knights who say Ni" (The Knights Who Say Ni) Nice :))))) ... Thanks Cursoe12-Jul-02 17:14 Cursoe 12-Jul-02 17:14  Thanks for the infos to Subclass or not to Subclass ... 12-Jul-02 20:49 12-Jul-02 20:49  jinkies!! I've got it! hehehe.. how stupid of me. Anyway, anyone else on the same situation as I am, follow this links: http://support.microsoft.com/default.aspx?scid=kb;EN-US;q133716 http://support.microsoft.com/default.aspx?scid=kb;en-us;Q129471 the last is more specific. One basically has to subclass m_hWndMDICleint member of CMDIFrameWnd. And also it's important to tackle the function GetSuperWndProcAddr (). Its discussed in the link. Good luck with everyone else Errno and a linking problem (again...) Janine12-Jul-02 3:02 Janine 12-Jul-02 3:02  Hello, Still struggling with the linker. Many things have been solved, but still (at least) one left. So, I have mylib.lib, which is written in C and I'm using it in my console program, that uses also MFC. I have the source code of that lib, but I can't change it. I use makefile for compiling and linking. I have (among others) compile options /TP /MT, so it's C++ and multithreaded. With a linker option /NODEFAULTLIB:libc.lib, I avoid crashes with libcmt.lib. So I compile my selfmade files and then link the .obj files and .libs and I get error LNK2001: unresolved external symbol _errno. The place where I get this error from is in one file in mylib. I checked, that it includes header errno.h. If I remove linker option /NODEFAULTLIB:libc.lib, this error of _errno disappears, but I get lots of errors, because libc and libctm define same functions. Or if I make it single threaded, the problem is with _begingthreadex and _endthreadex. I don't understand. Why doesn't the linker realize errno? Could it be because of messing with C and C++? -Janetta Re: Errno and a linking problem (again...) Joaquín M López Muñoz12-Jul-02 5:53 Joaquín M López Muñoz 12-Jul-02 5:53  The way out of this dilemma is to have both componentes (the MFC program and the lib) compiled for the same version of the C run-time library. Go to the project settings for your MFC app and select (in the first tab) "Use MFC in a static library". Then go to the C/C++ tab, category "Code generation" and set "Use run-time library" to "Multithreaded". Good luck. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Re: Errno and a linking problem (again...) Alexandru Savescu12-Jul-02 6:20 Alexandru Savescu 12-Jul-02 6:20  Janetta wrote: Could it be because of messing with C and C++? Yes it could. Try doing this: extern "C" { #include "header_written_in_C_used_from_c_plus_plus" } This will inform the C++ compilers to use C calling conventions, not C++ ones which are by default. Best regards, Alexandru Savescu CToolbar - diable item jafrazee12-Jul-02 2:59 jafrazee 12-Jul-02 2:59  I have a toolbar that under certain conditions i may need to diable an item. how can this be done? the only set function i can find is SetButtonInfo. i tried to change the state of the toolbar button to point to an id with out a function. i noted if i do that as i am building the toolbar and did not yet attach a function to it that is shows diabled. i tried the following CToolBar* pBar = &m_wndToolBar; if (pBar != NULL) { pBar->SetButtonInfo(11,ID_NULL,TBBS_BUTTON,11); } this had no effect on the toolbar. thank you for any help Re: CToolbar - diable item Mike Upton12-Jul-02 3:13 Mike Upton 12-Jul-02 3:13  The easiest and cleanest way to handle enabling/disabling any UI item in an MFC app is by using update handlers, which can be added with the ClassWizard. Search in MSDN for things like the ON_UPDATE_COMMAND_UI macro and CCmdUI objects, and have a look at MFC Technical Note 021 (TN021 in the index). The automatic disabling of toolbar buttons and menu entries without command handlers is also dealt with through the same architecture, and can be disabled by setting the m_bAutoMenuEnable member of your main frame window to false. See also Mike Dunn's C++ FAQ q.7.1 "We are the knights who say Ni" (The Knights Who Say Ni) Re: CToolbar - diable item Rage12-Jul-02 3:18 Rage 12-Jul-02 3:18  I don´t know myself at all with Toolbars, but after a short read of the msdn, i think you could try the following : Create a CToolBarCtrl object, assign it the return value of pBar->GetToolBarCtrl where pBar is your CToolBar. Then you have access to the EnableButton() and other functions of the same kind using the CToolBarCtrl. Hope this helps... ~RaGE(); Controls show in different ways in CDialog sanskypotov12-Jul-02 2:42 sanskypotov 12-Jul-02 2:42  Hi, I am trying to develop a Resource editor like VC++ . It seems that the way a CDialog is displayed while running in applications and while CDialog is shown in the Resource Editor. Can some tell me what is the difference. Thanks, San John 3:16 For God so loved the world, that he gave his only begotten Son ( Jesus Christ ) , that whosoever believeth in him should not perish, but have everlasting life. Running Visual C++ 6.0 and .Net Amos Kermisch12-Jul-02 2:33 Amos Kermisch 12-Jul-02 2:33  I have both Visual Studio C++ 6.0 and .Net Enterprise Architect installed on an Win 2K platform. Whenever I use the 6.0 debugger it launches the .Net debugger instead. Does anyone know a work around for this bug? Thanks in advance for your assistance. Amos Kermisch Re: Running Visual C++ 6.0 and .Net Alexandru Savescu12-Jul-02 6:18 Alexandru Savescu 12-Jul-02 6:18  I think .NET puts itself as the default JIT debugger. But if I have a VC 6.0 project set a breakpoing somewhere in the source files and hit F5 then my project is debugged under VC 6.0 Best regards, Alexandru Savescu Re: Running Visual C++ 6.0 and .Net Anonymous13-Jul-02 13:53 Anonymous 13-Jul-02 13:53  Alexandru, Just wanted to thank you...your suggestion works great! Amos how can i make a transparent dialog in win98 ttzzgg_8071312-Jul-02 2:31 ttzzgg_80713 12-Jul-02 2:31  i know it's easy for win2000, how abut win98

Last Visit: 31-Dec-99 18:00     Last Update: 15-May-24 8:46 Refresh ᐊ Prev1...16599166001660116602166031660416605166061660716608 Next ᐅ

General    News    Suggestion    Question    Bug    Answer    Joke    Praise    Rant    Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.