C / C++ / MFC

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Re: MFC DLL and Dialogs 29-Jun-01 15:40 29-Jun-01 15:40  I had the same problem through a COM ATL DLL, but the solution is the same, just build a release version of your DLL, it should work (ASSERT only in debug). Celhtar Re: MFC DLL and Dialogs 29-Jun-01 16:26 29-Jun-01 16:26  What you can't see won't hurt you Re: MFC DLL and Dialogs Peter Marino29-Jun-01 20:38 Peter Marino 29-Jun-01 20:38  err, now you are confusing me even more Peter Marino ( www.marino.dk ) Re: MFC DLL and Dialogs Peter Marino29-Jun-01 20:37 Peter Marino 29-Jun-01 20:37  That isn't a very good solution. I do need my debug version... for debugging and if it asserts then I'm doing something I shouldn't. The assert comes from the ::IsWindow( m_hWnd ) , the m_hWnd comes from my ProgramApp and I can use the lpDlg->SetWindowText( "Whatever" ) without anyproblems,.. but sending the lpDlg over to the DLL and using the same lpDlg->SetWindowText( "Whatever" ) asserts in the ::IsWindow function. The m_hWnd and lpDlg are the same both in the ProgramApp and ProgramDLL. For some reason the ProgramDLL can't see that the m_hWnd is a valid window in the ProgramDLL?! and this confuses me,.. I have now used 3 days and nights trying to solve this problem. Peter Marino ( www.marino.dk ) Re: MFC DLL and Dialogs D.D. de Kerf1-Jul-01 20:32 D.D. de Kerf 1-Jul-01 20:32  Try building both the exe and the dll using MFC in a shared DLL. I found this problem too, and using shared dll's it was solved... Somehow when you use MFC in a shared DLL both the EXE and the DLL will use the same heap or something and pointers can do their work better... You can find the option in the project settings of the project (left tab). Please, let me know if it helped you. Structured programming vs. chaotic mind boggling Passing ADO Conn Thru' interface?? Popsy29-Jun-01 12:21 Popsy 29-Jun-01 12:21  Hi , I'm developing the component which calls the stored procs in oracle. My component is being called in the threads released by a TCPIP server. I want to know. 1) Is it ok to accept the ADO connection object ( same obj every time) from the caller, if yes how can i pass it thru interface? 2) Or should I accept the connection string everytime and try to connect to oracle. Can anyone suggest better and safe scenario to get my work done Thanking in advance. Regards Popsy . Comunication Between Programs Anders Molin29-Jun-01 11:51 Anders Molin 29-Jun-01 11:51  I'm going to build a server application, which will be divided into 4 different services. Those services might run on different servers... I have done a lot of thinking about the communication between those services. They will all run on the same machine, or different machines on a LAN, so the communication protocol don't need to be routable... I was thinking about going for Named Pipes, be cause I know how to work with those. But Named Pipes doesn't scale well. I mean I meight have 4 threads in service 1, that all might want some data from service 2. Any thoughts? COM+, DCOM, Sockets, whatever? - Anders Money talks, but all mine ever says is "Goodbye!" Re: Comunication Between Programs Ben Burnett29-Jun-01 17:23 Ben Burnett 29-Jun-01 17:23  How about DDE? It may be old, but it might fit your needs. You can send any type of data with it, and the applications don’t have to be on the same computer. Plus its relatively easy to learn and use. -Ben --------- On the topic of code with no error handling -- It's not poor coding, it's "optimistic" Pushing Buttons RobJones29-Jun-01 11:36 RobJones 29-Jun-01 11:36  Im trying to push buttons within a form on a web site. Is there any events or commands that anyone knows of that will allow me to do this? for example ebay has a form with a "Submit Bid" button.. I would like to be able to push the "Submit Bid" Button with my app.. Any help would be appreciated! Thanks, Rob How to clear screen??? Richard Cheng29-Jun-01 10:40 Richard Cheng 29-Jun-01 10:40  I know I can use GetDocument->UpdateAllViews(0) to clear the screen in VIEW.CPP ..... but how can i clear the screen if my function is located in another non-MFC file??????? I just use something liked ::InvalidateRect(Handler, NULL, FALSE); to update the view..... Can you help me???? What i want to do is keep printing a list of number.....for example, 1 2 3 4 5 6 7 and the program has to compare the previous number....if the previous number is 7...then I have to erase the 7 and put an A there......but I have to display "7" first...then when it's going to display another .....let say 8....then the list should be 1 2 3 4 5 6 A 8 WinCE memory management Avneesh Bhatnagar29-Jun-01 9:29 Avneesh Bhatnagar 29-Jun-01 9:29  Hi! Is there a way to emulate the WinNT VirtualAllocEx() function on WinCE. In other words, I am trying to reserve and commit a region of memory within the virtual address space of a specified process in WinCE, but am not able to do so because WinCE only supports VirtualAlloc(). I am also trying to create a thread that runs in the virtual address space of another process in WinCE, and since the CreateRemoteThread function is not defined I am unable to do so. I would greatly appreciate if a solution to either of the above could be found.! Console App Help 29-Jun-01 8:55 29-Jun-01 8:55  Hi! I want to create a console application that looks like the Lotus Server, i.e. like a normal console but all the input goes on the last row with other things (logs in that case) being updated while I can write commands. Does anyone know how to create an app like this, an example would be great! Creating a document/view pair Jake Palmer29-Jun-01 8:40 Jake Palmer 29-Jun-01 8:40  In my MDI app I made a class that derives from CDocument and another that derives from CView. I also added the CMultiDocTemplate in the InitInstance method of the App class. My problem is in trying to add the GetDocument() function to my new view. This line in the view's header file: CVideoDoc* GetDocument() {return (CVideoDoc*)CView::GetDocument();} gives me these compilation errors in the header file: error C2143: syntax error : missing ';' before '*' error C2501: 'CVideoDoc' : missing storage-class or type specifiers error C2501: 'GetDocument' : missing storage-class or type specifiers I've compared this to working code, and I don't know the problem. It's gotta be something simple that I just didn't think of. Any help is appreciated. thanks, Jake Re: Creating a document/view pair J Patel29-Jun-01 8:44 J Patel 29-Jun-01 8:44  Include your document class header file in the appropriate file. you can simply put #include "videodoc.h" in your view class. HTH Jignesh Re: Creating a document/view pair Jake Palmer29-Jun-01 9:07 Jake Palmer 29-Jun-01 9:07  I had been including VideoDoc.h in the view's .cpp file. I changed that to include it in the view's .h file, and it's good to go. Thanks, Jake CStatusBar in a dialog? 29-Jun-01 7:44 29-Jun-01 7:44  I want to use the status bar in my Dialog based app! but this code doesn't show the status bar! m_SB.Create(this); m_SB.Indicator(indicator, sizeof(in..)); // I think the funck was Inicator or spmething! but there is no control when my app is running! I wrote it in OnInitDialog What happened here????? Wrong variable type??? Richard Cheng29-Jun-01 7:29 Richard Cheng 29-Jun-01 7:29  Here is the codes float a,b; a = (( (AlphaTotal - PrevAlphaTotal) / PrevAlphaTotal ) * 100 ); b = (( (BetaTotal - PrevBetaTotal ) / PrevBetaTotal ) * 100 ); CString testing; CStringList ReturnedData; testing.Format("Alpha Percentage %f", a ); ReturnedData.AddTail(testing); testing.Format("Beta Percentage %f", b ); ReturnedData.AddTail(testing); (--->ReturnedData will be used to output in view class) The results would be: If a or b = 65.50...it displays 0.00 If a or b = 180.50...it displays 100.00 Why i know that because.....I try just type some number in the formula...for example, a = ((700-500)/500)*100; b = ((81-60)/60)*100; Then output is: Alpha Percentage 0.00 Beta Percentage 0.00 How to fix it?????????????????????? Re: What happened here????? Wrong variable type??? Michael Dunn29-Jun-01 7:33 Michael Dunn 29-Jun-01 7:33  Are AlphaTotal, PrevAlphaTotal, etc. all integral types? Probably so. Use floating point types (or cast the variables to doubles) otherwise the division operator does an integer divide, which throws away any remainder. That's why 200/500*1000 is 0 - 200/500 is an integer divide and returns 0. --Mike-- http://home.inreach.com/mdunn/ "Holding the away team at bay with a non-functioning phaser was an act of unmitigated gall. I admire gall."   Lt. Cmdr. Worf Re: What happened here????? Wrong variable type??? Richard Cheng29-Jun-01 7:54 Richard Cheng 29-Jun-01 7:54  Oh thanks!!!! It works now... but i have one more question. For example, a = 180.98763 I just want to display 180.99....and save it to a char or CString because i want to save to my CStringList........what can i do??? can i use: char Buffer[128]; sprintf(Buffer, " %f %f", a,b); I have a and b......I want to display liked: | 180.98 | 123.56 | ?????? Re: What happened here????? Wrong variable type??? Richard Cheng29-Jun-01 7:58 Richard Cheng 29-Jun-01 7:58  When i use this code to save the result to a char, char Buffer[128]; sprintf(Buffer, " %f %f", a,b); my program is forced to terminate....why? Re: What happened here????? Wrong variable type??? Michael Dunn29-Jun-01 11:55 Michael Dunn 29-Jun-01 11:55  For example, a = 180.98763 I just want to display 180.99 A format string of "%.2f" will do that. Check the printf() documentation for a full list of the format strings. --Mike-- http://home.inreach.com/mdunn/ "Holding the away team at bay with a non-functioning phaser was an act of unmitigated gall. I admire gall."   -- Lt. Cmdr. Worf Loading a bitmap over a network Jack Mott29-Jun-01 7:12 Jack Mott 29-Jun-01 7:12  I'm currently doing the following to load a bitmap HBITMAP hBitmap =(HBITMAP) LoadImage(NULL,"c:/activextree/closedfolder.bmp",IMAGE_BITMAP,20,20,LR_LOADFROMFILE); But need to be able to pull this off a network. how can I do this? What Id like to do is something like the following (which doesn't work) HBITMAP hBitmap =(HBITMAP) LoadImage(NULL,"http://localhost/foo/closedfolder.bmp",IMAGE_BITMAP,20,20,LR_LOADFROMFILE); thanks for any help -Jack Mott jackm@scalablesoftware.com Re: Loading a bitmap over a network Drake Elsari29-Jun-01 7:20 Drake Elsari 29-Jun-01 7:20  You'd need to first make a HTTP connection, then try it. Also you need to make sure that image can be read. Re: Loading a bitmap over a network Jack Mott29-Jun-01 7:35 Jack Mott 29-Jun-01 7:35  thanks for the response. What is the easiest way to make an http connection? -Jack Mott jackm@scalablesoftware.com Re: Loading a bitmap over a network Drake Elsari30-Jun-01 14:52 Drake Elsari 30-Jun-01 14:52  Well you could connect using the CHttpServer class. I can't help you with it's use, but you should just play around with it, cuz I don't think it's well documented.

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