C / C++ / MFC

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Re: help: Creating toolbar at runtime Tomasz Sowinski12-Jul-01 1:55 Tomasz Sowinski 12-Jul-01 1:55  Use ImageList_LoadImage to load image from file into imagelist. There's no MFC wrapper over this function, so you'll also have to use CImageList::operator HIMAGELIST(). Tomasz Sowinski -- http://www.shooltz.com Re: help: Creating toolbar at runtime SP17-Jul-01 11:48 SP 17-Jul-01 11:48  Thanks .. it worked. COM Port question 11-Jul-01 12:59 11-Jul-01 12:59  Does anyone know any function in VC++ that can let me access or read or write data from or to COM port?? Re: COM Port question John Uhlenbrock12-Jul-01 6:20 John Uhlenbrock 12-Jul-01 6:20  Yes, WriteFile and ReadFile will do the trick. It is here on msdn: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcecomm/htm/serial_8.asp?frame=true This goes through opening, configuration, reading and writing. COM Port question Richard Cheng11-Jul-01 12:59 Richard Cheng 11-Jul-01 12:59  Does anyone know any function in VC++ that can let me access or read or write data from or to COM port?? List Box. John Uhlenbrock11-Jul-01 12:37 John Uhlenbrock 11-Jul-01 12:37  I have SDI form view based app. There is a dialog bar, and in the main frame I have a list box. The list box is linked to a logging class who's base class is CListBox. In the constructor of the log class, I Create() the list box. So, in order to use my log class, I have to initilize the log class in CMainFrame, since the Create() function requires a pointer the the parent window "this" in this case. However, I need access to the log class from CApp. - Confused MFC novice, John Re: List Box. Tomasz Sowinski12-Jul-01 1:37 Tomasz Sowinski 12-Jul-01 1:37  Use this... CListBox& lbx = static_cast<CMainFrame *>(AfxGetMainWnd())->m_yourListBox; ... or this, assuming that listbox has a well-known id: CListBox& lbx = *(static_cast<CListBox *>(AfxGetMainWnd()->GetDlgItem(IDC_YOURLISTBOX)); Tomasz Sowinski -- http://www.shooltz.com Application Menu Iteration Paul de Bazin11-Jul-01 12:19 Paul de Bazin 11-Jul-01 12:19  Hi all, I'm looking at trying to write an application to iterate through all the menus in an application. Basically, this would form part of a test suite type of thing that I could build on for my applications. I also thought it would be useful as a kind of demo tool to automate actions and so wanted to make it as generic as possible (ie: just using Win32 commands to analyze the application). I need to be able to iterate through a running application because the menus may be dynamically altered at startup (this happens in our apps), so iterating through the resources of the exe is not good enough. This is all pretty easy for standard apps where the menu is not dockable, but GetMenu(HWND) doesn't appear to work on MS Apps as the menu is off sub windows etc... So far, I've been unable to figure out a way to automatically recognize the menu for these apps. We've tried sending an ALT-F message to the windows in the app to get it to popup the File menu, but that only seems to work in the standard menu apps too. Has anyone done this before?, or have any ideas on how to recognise a window with the main menu? Paul All round software nice guy.... Re: Application Menu Iteration Tomasz Sowinski12-Jul-01 1:51 Tomasz Sowinski 12-Jul-01 1:51  MS Office 'menus' are not menus at all- they use custom window classes (MsoCommandBar) to implement "cool" look and docking. The only reference I've found in MSDN is in AccessibleObjectFromWindow docs located in Platform SDK: Accessibility - it seems that you can get a IDispatch interface for a command bar. Tomasz Sowinski -- http://www.shooltz.com Adding CFileDialog as a Property Page Ganesh Agrawal11-Jul-01 12:07 Ganesh Agrawal 11-Jul-01 12:07  How can I use a CFileDialog as one of the pages in the property sheet. ASCII to Float Conversion AaroC35711-Jul-01 10:21 AaroC357 11-Jul-01 10:21  Have data in ascii representation and need to convert to float equivalent. Not atof, that will convert ascii chars like "1234.567" to a float... I need to know how to take things like "=..." and "...." to their float value. Any ideas? Aaron Re: ASCII to Float Conversion Carlos Antollini11-Jul-01 10:59 Carlos Antollini 11-Jul-01 10:59  Please!!!!! atof(); Carlos Antollini. Re: ASCII to Float Conversion Michael Dunn11-Jul-01 19:53 Michael Dunn 11-Jul-01 19:53  I don't understand what you're asking. "=" has no float equivalent. atof() is what you should use. Unless you're asking for the ASCII value of a character? In that case: int ch = '='; // ch now holds the ASCII value of = --Mike-- http://home.inreach.com/mdunn/ Push the button, Frank. C++ Certification question 11-Jul-01 10:20 11-Jul-01 10:20  Hi there, I was wondering if anyone here would know whether all those C++ Microsoft certifications for MCSD and MCDBA will be retired when the new .NET stuff rolls in, in the near future. Re: C++ Certification question Christian Graus11-Jul-01 13:07 Christian Graus 11-Jul-01 13:07  I doubt it - more likely they will add new subjects and retire old ones, just like MCSE does. Christian #include "std_disclaimer.h" People who love sausage and respect the law should never watch either one being made. The things that come to those who wait are usually the things left by those who got there first. Re: C++ Certification question 11-Jul-01 15:33 11-Jul-01 15:33  The question is not if they will be retired but when will they be retired. I've had to upgrade my MCSD after the old exams were retired and I expect to do it again sometime in the next two years. It's one way for Microsoft to get developers to use their tools and software. Dialog Box sizing 11-Jul-01 10:18 11-Jul-01 10:18  Hi there, When you are using Visual C++ and add Dialog box through the resources tab, how can you specify the exact width and height of the dialog box? Re: Dialog Box sizing Jake Palmer11-Jul-01 11:12 Jake Palmer 11-Jul-01 11:12  You should be able to just size the dialog by dragging the edges. If you want to enter the exact width and height, you might need to edit the resource file (*.rc) and scroll down to the dialog section, and enter your values there. hope it helps, Jake Re: Dialog Box sizing Michael Dunn11-Jul-01 19:56 Michael Dunn 11-Jul-01 19:56  If you mean how to you set the exact size in pixels, you can't. Dialogs use DLU (dialog units) which are independent of pixels. You can call SetWindowPos() in OnInitDialog() to set the size in pixels, but be aware the result will look awful in font sizes other than the ones you use. --Mike-- http://home.inreach.com/mdunn/ Push the button, Frank. Possible to use OCX from within a DLL??? DVryce11-Jul-01 9:48 DVryce 11-Jul-01 9:48  I have a very particular problem that I need some help with. My problem is that I am creating a regular MFC DLL that displays a dialog which then does some work based on user input. I need to create an ActiveX control (in this case Snowbound Software's Rastermaster OCX) on this dialog at runtime. No matter how I've tried to approach this problem it just does not seem to want to work. It seems to bomb in the InitControlContainer() function in the MFC source file OCCCONT.CPP, where it goes to make the call to m_pCtrlCont = afxOccManager->CreateContainer(this); I've tried this using other ActiveX controls and have gotten the same problem so I do not believe it's a problem with the snowbound control in particular. Can anyone please tell me if I'm just doing something wrong, or if what I'm attempting to do is just simply not possible? Any help will be GREATLY appreciated! Thanks! X 10 Re: Possible to use OCX from within a DLL??? Carlos Antollini11-Jul-01 10:19 Carlos Antollini 11-Jul-01 10:19  And with this in the initinstance? AfxEnableControlContainer(); Carlos Antollini. Re: Possible to use OCX from within a DLL??? DVryce12-Jul-01 2:49 DVryce 12-Jul-01 2:49  I am making sure to call AfxOleInit() and AfxEnableControlContainer() in my App's InitInstance. Then in the constructor for my dialog I create a new object of the ActiveX control type which I then call the Create() member on in the dialog's OnInitDialog() function. For some reason after the call to create the control object's HWND is still NULL. It keeps failing on an assertion error in "Winocc.cpp" which I think is a result of trying to call a method on this object with a NULL hwnd. The error as reported by the VC++ debug window is as follows: Loaded 'C:\WINNT\system32\OLE32.DLL', no matching symbolic information found. CoCreateInstance of OLE control {B2D168E0-5597-101D-843A-DA16297B4C87} failed. >>> Result code: 0x800401f0 >>> Is the control is properly registered? I'm pretty sure the control is registered however as I ran a successful call to regsvr32 on it. Re: Possible to use OCX from within a DLL??? DVryce12-Jul-01 4:11 DVryce 12-Jul-01 4:11  Just solved my own problem... The answer was to be found in some comments containing the code for the AfxOleInit() call. I had to calle OLEInitialize() before doing anything else in my app's InitInstance() and now it all works fine. Why calling AfxOleInit() doesn't have the same affect is beyond me, but hey, that's just the way it works! Pl help:Windows Enumeration sriram_mr11-Jul-01 9:46 sriram_mr 11-Jul-01 9:46  Hi All, I want to implement sometihing like a task manager's applications tab.So What did i do, HWND hwndDesktop = GetDesktopWindow(); EnumChildWindows(hwndDesktop,EnumChildProc,NULL); and stored the hwnd's in a list.But i get a lot of handles like the program manager's etc .I just need the handles to the application windows .Also,How does one get the hwnd of the topmost window in the Z Order.Also,Is there an API like GetLastFocus() which returns me the hwnd of the window that last had the focus.(I could store that in WM_SETFOCUS, but what if an app does not have a window by itself but wants to do shifting of focus of other windows in the system.) Thanx All for the help. Sriram M R Books about MFC 11-Jul-01 9:40 11-Jul-01 9:40  Can anybody recommend some good books about MFC? I have "Programming Windows with MFC" by J.Prosise so i'd like to take step forward in the areas which that book didnt cover like database and internet/network related programming etc. etc Any suggestions??

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