C / C++ / MFC

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catch value with vc++ 28-Jun-01 3:59 28-Jun-01 3:59  I would like to create an automation which could use excel. I need excel to catch values for functions which are implemented with vc++. I believe that I could use GetValue function like that: range.GetValue which return a VARIANT. It's at this step I have a problem, because, for example if my function need of a double parameter, and this parameter is given by the value catched on excel. How my function could recognize it? thank for your help Virtual directory 28-Jun-01 2:59 28-Jun-01 2:59  Does anyone know how you can create a virtial directory using C++ or MFC. Sample code would be appreciated Re: Virtual directory Erik Funkenbusch28-Jun-01 11:17 Erik Funkenbusch 28-Jun-01 11:17  Depends on what you mean by "virtual directory". Do you want to create an actual file system extension? Or a Shell extension? Shell extensions are things like the Printer folder, the Control Panel Folder, the Dial-up networking folder, etc... File system extensions are directories you can go to from a command line and appear to be real directories, even though they're not. If you want a shell namespace extension, then check this article: http://www.codeproject.com/shell/shlext.asp If you want the file system extension, then good luck, I don't know of an example for that. How to use RegQueryMultipleValues fnc 28-Jun-01 2:44 28-Jun-01 2:44  Hi i am trying to use this function to retrieve multiple key values it returns always an error can anybody tell me how to fill the VALENT structure specified thanks mouse click problem in ownerdraw menu Paul Goodyear28-Jun-01 1:47 Paul Goodyear 28-Jun-01 1:47  I have created an menu dynamicly and set as ownerdraw to add icons and bitmaps. But when I click on a popup item in the menu, and move to another popup item the menu closes i.e. popup_item1 -->menu_item1 -->menu_item2 -->menu_item3 popup_item2 -->menu_item1 -->menu_item2 above: If I click popup_item1 the menu items are displayed in a popup , if i move the mouse to popup_item2 the menu disapears. Any ideas??? regards, pgudge NOTE::: I forgot to mention, when I have the menu poping up on a Dialog box it doesn't do this it is fine, it only closes the menu when it's opens on the system tray. Re: mouse click problem in ownerdraw menu Paul Goodyear28-Jun-01 5:33 Paul Goodyear 28-Jun-01 5:33  If no one is no the wiser it was a little error on my part. When the SystemTray icon is clicked and a popup / menu item is selected it focus on the Dialog box which is open, and closing the menu. All I need now is a invisible dialog, or even better a message pump outside the dialog. regards, pgudge Preprocessor defines and MFC Serge A. Zhirko28-Jun-01 1:15 Serge A. Zhirko 28-Jun-01 1:15  Hi! Does anyone know, how to determine (until preprocessor defines) the app use MFC or not, if included support MFC in static library ? cursor position 28-Jun-01 1:11 28-Jun-01 1:11  can anybody tell me how i would retrieve the cursor position (the text cursor in an edit control....) thanks in advance! Re: cursor position Anders Molin28-Jun-01 3:01 Anders Molin 28-Jun-01 3:01  Take a look at the EM_* messages, I think you can do what you want with EM_LINEFROMCHAR and EM_GETSEL BTW, In an edit control it's not called a cursor, but a caret... - Anders Money talks, but all mine ever says is "Goodbye!" OLE Drag Drop in an ActiveX control 28-Jun-01 0:52 28-Jun-01 0:52  Where can I find a C++/MFC source code example about how to add the OLE Drag Drop events (OLEStartDrag, ...) to an ActiveX control. Multi page TIF 28-Jun-01 0:30 28-Jun-01 0:30  Anyone know how to read the page count from a multipage tif image. Re: Multi page TIF PhoenixHawke23-Aug-07 8:57 PhoenixHawke 23-Aug-07 8:57  I would also be interested in tips on how to access this information - I am often asked to provide an index of a directory including the file name and number of pages for group 4 fax encoded TIFFs. Any info or tips would be appreciated How do i implement a context menu and a Right Mouse button Double click at the same time? 28-Jun-01 0:27 28-Jun-01 0:27  Hi, My app uses a context menu in one of its views, which works fine on its own! The problem comes when i try to add other functionality to the WM_RBUTTONDBLCLK. The context menu appears on the double click! Is it posible, or even worth it, to get them working together? Re: How do i implement a context menu and a Right Mouse button Double click at the same time? Tomasz Sowinski28-Jun-01 0:39 Tomasz Sowinski 28-Jun-01 0:39  You need to use a timer. 1) In WM_RBUTTONDOWN handler, create the timer with a timeout period of 2 * ::GetDoubleClickTime(). Do not display popup menu here - you don't know if this is a double-click or single-click. 2) Insert KillTimer in WM_RBUTTONDBLCLK. 3) Add WM_TIMER handler - you'll get this message if somebody right-clicks once and second click doesn't come. The code with popup menu should reside here. Tomasz Sowinski -- http://www.shooltz.com.pl API question - dealing with messages Gennady Oster28-Jun-01 0:22 Gennady Oster 28-Jun-01 0:22  Hi! I've posted this question in the "Suggestion" board, because there is no API discussion, and was advised to post it to C++ board. Sorry for long story. I've created the NT service that in the case of error not only register event in the Application EventLog, but also may send this event by mail to the predefined SMTP address. In the configuration applet for this service I'd like to let the user to select, what events he/she wants to receive in mail. So I'd like to extract the list of events from the event source, registered in HKLM\SYSTEM\CurrentControlSet\Services\Eventlog\Application\EventMessageFile. I can extract the single event with FormatMessage, if I know the ID. But if I don't? The question is: How I can enumerate the events in the EventMessageFile? Sure I can do it "manualy" analyzing the message file structure. But I prefer something more safe in the case, they in MS will change the message file structure. And using API (if there is any) will save me from unskilled labour. I don't afraid to do such a work, but if I can avoid it ... Thanks in advance. Regards, Gennady Re: API question - dealing with messages Tomasz Sowinski28-Jun-01 0:48 Tomasz Sowinski 28-Jun-01 0:48  Message table is normal Win32 resource, so you need to load message file using LoadLibraryEx() with LOAD_LIBRARY_AS_DATAFILE flag. Then, use EnumResourceXXX/FindResource/LoadResource functions to retrieve MESSAGE_RESOURCE_XXX structures. Hope that helps. Tomasz Sowinski -- http://www.shooltz.com.pl Re: API question - dealing with messages Gennady Oster28-Jun-01 1:22 Gennady Oster 28-Jun-01 1:22  Thanks ! EnumResourceNames is exactly what I looked for. Don't know why I couldn't find it myself - may be search expression was wrong. Thank you once more. Regards, Gennady cout<< Rejeesh28-Jun-01 0:00 Rejeesh 28-Jun-01 0:00  In the below given program, 'cout' in the destructor doesn't work. But if the iostream is replaced with iostream.h and the statement using namespace std; is commented then, it works fine and displays - "Hello how are you?" Can anyone explain why is it so? #include iostream using namespace std; struct A { A(){cout<<"Hello";} ~A(){cout<<" you?";} }a; void main( void ) { cout<<" how are"; } //"void (*p[10]) (void (*)());" Re: cout<< markkuk28-Jun-01 1:05 markkuk 28-Jun-01 1:05  In VC++ <iostream> and <iostream.h> use different implementations of the run-time library routines, so they work differently. Re: cout<< Rejeesh28-Jun-01 1:33 Rejeesh 28-Jun-01 1:33  Thnx for ur reply. But I would like to know why is the STL cout is behaving like this? Is it a bug in STL? "void (*p[10]) (void (*)());" Re: cout<< Alvaro Mendez28-Jun-01 5:26 Alvaro Mendez 28-Jun-01 5:26  Don't have an answer for you but you may want to just debug the app to see why the last cout doesn't do anything. Have you tried appending an "endl" to the "you"? Alvaro Re: cout<< Mike Nordell30-Jun-01 11:49 Mike Nordell 30-Jun-01 11:49  You need to flush "cout" before exiting the application. std::endl takes care of this, as in cout << "d'tor" << endl; Anybody knows why this compiles ? 27-Jun-01 23:58 27-Jun-01 23:58  I wonder why this compiles without an error : m_nScrollPos-=nPos,1.0,2,3 (IMHO this is obviousely nonense) Re: Anybody knows why this compiles ? Tomasz Sowinski28-Jun-01 0:12 Tomasz Sowinski 28-Jun-01 0:12  > (IMHO this is obviousely nonense) Grab any C/C++ book and learn about 'sequential-evaluation operator' or 'comma operator'. If you don't have one, read this excerpt from C++ Language Reference included in MSDN: "Consider the expression e1 , e2 The type and value of the expression are the type and value of e2; the result of evaluating e1 is discarded. The result is an l-value if the right operand is an l-value." Tomasz Sowinski -- http://www.shooltz.com.pl Re: Anybody knows why this compiles ? 28-Jun-01 0:16 28-Jun-01 0:16  enlightened

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