C / C++ / MFC

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Debugging wchar_t in VC6.0 LasVegasGuy19-Jun-04 10:54 LasVegasGuy 19-Jun-04 10:54  Is there any way to display the actual characters in the debugger windows when using wchar_t characters and strings? Right now, I can only get it to display the unsigned short values. Man Learns from History that he never learns from History Re: Debugging wchar_t in VC6.0 Graham Bradshaw19-Jun-04 11:33 Graham Bradshaw 19-Jun-04 11:33  Select Tools | Options from the menu, and pick the Debug tab. Make sure 'Display unicode strings' is checked. Re: Debugging wchar_t in VC6.0 LasVegasGuy19-Jun-04 15:00 LasVegasGuy 19-Jun-04 15:00  Thanks!! Man Learns from History that he never learns from History Dialup: cancelling InternetAttemptConnect() PJ Arends19-Jun-04 8:52 PJ Arends 19-Jun-04 8:52  Hey all, I asked this question two days ago but did not get an answer. Maybe the previous question was too vague or it just got buried too fast. So I will attempt to reword it more clearly with more infomation and hopefully I can get an answer. I have an app that is designed to automatically fire off emails at a user specified time or time interval. What it does is start a seperate worker thread for each message. The thread will gather the information it needs, build the message, then attempt to send it. I have a thread manager class that keeps track of all the message threads running. The first thread to get to the point where an internet connection is needed will enter a critical section, and all subsequent threads will have to wait. In the critical section I call InternetGetConnectedState() to see if the computer is already connected to the internet. If it is connected the thread will let the manager class know, and it will clear the critical section and let all the other threads continue. If it is not connected, I call InternetAttemptConnect() to invoke the dialup dialog. At this point all subsequent message threads are stuck waiting for the critical section. If the user presses the cancel button on the dialup dialog, the thread will inform the manager class that there is no connection and the thread will terminate. But the next thread will again repeat the process of attempting to make a connection. So if there are many threads waiting to send, and the user wants to cancel them all, they will have to hit the cancel button once for each thread. What I want to do is have my main GUI thread popup a modeless dialog with a status panel and a cancel button on it. When the user presses that cancel button, I want to stop all the message threads, and remove the dialup dialog if it is present. So my question is: How can I programatically remove or cancel the dialup dialog that is created using the InternetAttemptConnect() function. Any pointers or suggestions (even telling me if it possible or not) would be appreciated. I am sure I could call TerminateThread() on the message thread that is hung waiting for the dialup dialog, but I do not want to do that as it will make my app unstable. Sonork 100.11743 Chicken Little "You're obviously a superstar." - Christian Graus about me - 12 Feb '03 Within you lies the power for good - Use it! Re: Dialup: cancelling InternetAttemptConnect() palbano19-Jun-04 9:51 palbano 19-Jun-04 9:51  Don't know how to do that. can't even get the dialog to open on my systems. I expect because i have a lan or wireless connection on all my systems. I could guess wildly that you might be able to use FindWindow() and then send it a message like maybe WM_CLOSE ?? "No matter where you go, there your are." - Buckaroo Banzai -pete Re: Dialup: cancelling InternetAttemptConnect() Nish Nishant19-Jun-04 20:31 Nish Nishant 19-Jun-04 20:31  Hi PJ Couldnt you use a flag? So you could do something like if(bOkToAttemptConnect) InternetAttemptConnect(); and set bOkToAttemptConnect to false if an InternetAttemptConnect fails? Nish p.s. BTW PJ, InternetGetConnectedState by itself is not very reliable in my experience. See my blog entry to see what I do to detect net connectivity [this is specially true for machines behind a firewall/proxy] Checking for internet connectivity[^] Now with my own blog - void Nish(char* szBlog); My MVP tips, tricks and essays web site - www.voidnish.com Re: Dialup: cancelling InternetAttemptConnect() PJ Arends20-Jun-04 9:16 PJ Arends 20-Jun-04 9:16  Thanks for the link to your blog Nish. I think I will implement your idea. Your blog looks very interesting, I will have to take some time and explore it some more. I think I will have to take some time and rethink how I am approaching my problem. I will take your idea of the flag into consideration, as well as palbano's idea of using FindWindow (even though I do not really care for that idea, but FindWindow may be needed here.) Thanks. Sonork 100.11743 Chicken Little "You're obviously a superstar." - Christian Graus about me - 12 Feb '03 Within you lies the power for good - Use it! Re: Dialup: cancelling InternetAttemptConnect() Neville Franks20-Jun-04 12:32 Neville Franks 20-Jun-04 12:32  Hi PJ, Tis early monday morning here and I've only had one cup of coffee.;) How about one thread that looks after the dialip etc. and it has a flag along the lines Nish mentioned. Other threads would query a flag back in the main app thread to test if the dialup is active. TerminateThread() is bad as you indicate. Peter Hancock's article "An exception safe OO thread-pool framework" http://www.codeproject.com/threads/threadlibrary.asp[^] uses a neat trick of raising an exception in the thread to kill it. The thread pool itself is very good IMO. Instead of a separate thread for each email, how about a single thread with a queue. Once an email has been successfully sent it would be removed from the queue. Iterate the queue untill all emails have been sent. Hope that helps. Neville Franks, Author of ED for Windows www.getsoft.com and coming soon: Surfulater www.surfulater.com Re: Dialup: cancelling InternetAttemptConnect() PJ Arends21-Jun-04 8:31 PJ Arends 21-Jun-04 8:31  Thanks for the ideas, Neville. This gives me some differnt ideas that I will have to think about. Sonork 100.11743 Chicken Little "You're obviously a superstar." - Christian Graus about me - 12 Feb '03 Within you lies the power for good - Use it! Bug tracking Nevering19-Jun-04 8:41 Nevering 19-Jun-04 8:41  I'm looking for a good built in bug tracker/reporter that can ship with the released product. It would give me detailed information on where the crashed happened (source level) and why, something like a C++ stack trace. Does anything like this exist ? thanks Re: Bug tracking PJ Arends19-Jun-04 9:14 PJ Arends 19-Jun-04 9:14  http://www.codeguru.com/Cpp/V-S/debug/article.php/c1277/[^] Sonork 100.11743 Chicken Little "You're obviously a superstar." - Christian Graus about me - 12 Feb '03 Within you lies the power for good - Use it! Re: Bug tracking Ravi Bhavnani19-Jun-04 17:23 Ravi Bhavnani 19-Jun-04 17:23  PJN's Exception Logger[^] rocks! /ravi My new year's resolution: 2048 x 1536 Home | Articles | Freeware | Music ravib@ravib.com Re: Bug tracking Trollslayer20-Jun-04 1:01 Trollslayer 20-Jun-04 1:01  PJ's website is great, thanks for the link Elaine The tigress is here how to find dll for active x control cab 19-Jun-04 7:00 19-Jun-04 7:00  hi i wrote an active x control with the microsoft visual studio .net it handles the output from my webcam and lets it start and stop. everything works fine, but just if I run the control on my computer. on another maschine (also win xp) the control doesnt start in the browser. (security settings allow it) i suppose i need to pack some dlls into a cab file. how do i find out which dll i need to pack into the cab file? and how do i write the inf document. beside the standard imports from an atl control project i just added #include <Vfw.h> for the webcam functinality these are the standard imports: #include <afxctl.h> // MFC support for ActiveX Controls #include <afxext.h> // MFC extensions #include <afxdtctl.h> // MFC support for Internet Explorer 4 Comon Controls #ifndef _AFX_NO_AFXCMN_SUPPORT #include <afxcmn.h> // MFC support for Windows Common Controls #endif // _AFX_NO_AFXCMN_SUPPORT // Delete the two includes below if you do not wish to use the MFC // database classes #include <afxdb.h> // MFC database classes #include <afxdao.h> // MFC DAO database classes #include <windows.h> Re: how to find dll for active x control cab Blake Miller21-Jun-04 3:32 Blake Miller 21-Jun-04 3:32  Use Depends.Exe to see which other DLL you might need. If you can not find Depends.Exe, then you can use Process Explorer from www.sysinternals.com to watch your program while it is running. Youc an see which DLL the EXE has loaded. I am not sure about the INF document. How to use customized static text in Dailog Box auur19-Jun-04 5:29 auur 19-Jun-04 5:29  I am working on one project .for that i want to use different color and different size of static text on dailog box how can use such a customisez text on dailog box ? Re: How to use customized static text in Dailog Box Johan Rosengren19-Jun-04 6:38 Johan Rosengren 19-Jun-04 6:38  By first reading one of the many articles on http://www.codeproject.com/staticctrl/[^] Dialog in a DLL MHillary19-Jun-04 5:16 MHillary 19-Jun-04 5:16  Hi, Is it possible to place a whole dialog resource in a DLL? I am tring to place one of the message box dialogs in to a dll so I can use it in all my applications. The problems I'm having is that I have to add a dialog resource to my application and that when DoModal is called on the dialog, -1 is returned and the dialog is not displayed. Do anyone have any advice. Cheers Mark Re: Dialog in a DLL Johan Rosengren19-Jun-04 5:20 Johan Rosengren 19-Jun-04 5:20  Resources are normally loaded from the application, as you have noticed. But calling AfxSetResourceHandle, you can change this, however. Create a function in the DLL handling the DoModal of the dialog. You might also want to check the AFX_MANAGE_STATE on MSDN. Re: Dialog in a DLL MHillary19-Jun-04 7:11 MHillary 19-Jun-04 7:11  Thanks alot, got it working. Got one small problem left though. When I call AfxGetAppName() in the dll it generates an assert. Is there any other way of getting the application name? Again Thanks Mark Re: Dialog in a DLL Johan Rosengren19-Jun-04 7:19 Johan Rosengren 19-Jun-04 7:19  GetModuleFileName with NULL for the hModule-parameter should do the trick. Re: Dialog in a DLL wb19-Jun-04 6:53 wb 19-Jun-04 6:53  Hi! when your DLL is loaded, you have to store the Handle of it somewhere in your DLL... and then create something like this: CDialog * CreateBox() { HINSTANCE hMainRes = AfxSetResourceHandle(_SavedHinstance); CMyBox pBox = new CMyBox(); AfxSetResourceHandle(hMainRes); return pBox; } or somthing similar.... Re: Dialog in a DLL ThatsAlok21-Jun-04 1:06 ThatsAlok 21-Jun-04 1:06  i don;t know why you facing the problem i myself using the dialog box from MFC Ext DLL. if you want some sample code i will give you I Think It will Work ----------------------------- Alok Gupta visit me at http://www.thisisalok.tk Drawing an arrow kfaday19-Jun-04 5:13 kfaday 19-Jun-04 5:13  Hi, I'm trying to draw an arrow in a DC. i have a line, consisting of the starting point(aa) and the ending point(bb). (CPoint variables) I do a Moveto (aa) and then a LineTo (bb). What i want to do, is like a triangle, the end of an arrow (or just two lines), but i haven't came up with ideas. The problem is that the line can be in any direction, not just horizontal or vertical. how could i do that with just aa and bb(the start and end of the line)?? thanks!! Re: Drawing an arrow PJ Arends19-Jun-04 6:45 PJ Arends 19-Jun-04 6:45  If you want to use GDI+ you can use the Pen::SetStartCap() and Pen::SetEndCap() functions to have GDI+ draw the arrow heads for you. AFAIK, with GDI you have calculate and draw the arrow heads yourself. Sonork 100.11743 Chicken Little "You're obviously a superstar." - Christian Graus about me - 12 Feb '03 Within you lies the power for good - Use it!

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