| why it's error? (3 replies) |
| microsoft.public.dotnet.languages.vc |
| void CkgDlg::OnBnClickedOk() { // TODO: String* str; SqlConnection* myConn new SqlConnection ("Provider Microsoft.Jet.OLEDB.4.0;Data Source data1.mdb;"); //error C3828: try{ str "select item1 from tab1"; SqlCommand* myCmd new SqlCommand(str,myConn);//error C3828: myConn Open (); MyCmd ExecuteNonQuery(); ..... ..... what mean is error C3828 |
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| SystemParametersInfo doesn't work in vc.net ! (2 replies) |
| microsoft.public.dotnet.languages.vc |
| hi, all. In my computer(windows2000 professional), I found this code doesn't work! SystemParametersInfo(0x2000/*SPI GETFOREGROUNDLOCKTIMEOUT*/,0,&dwTimeOut,0)) ; The value of dwTimeOut always equals to Zero.But the same code in VC 6.0 works well! Why ?? What things I should do for query the right value in vc.net?? Thanks for any help! |
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| Task List (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hi, I am using C in Visual Studio .Net and I just discovered that I can use /TODO to setup a task list which is great for me who have poor memory. However, I can only view individual task list per file. Is there anyway that I can see the consolidated task list per solution / project? Thanks in advance. Andrew. |
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| Tooltip when over a specific location over an image (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hi, I would like to place an Icon on an Image. If the mouse is over this Icon, I want to display the associated text in a tooltip. How would I do this? Any ideas? My last request wasn't answered so I give it a second try. Best regards, Martin |
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| Ambiguous template function, best way to solve it... (3 replies) |
| microsoft.public.dotnet.languages.vc |
| Hi, I've got a template function move by( rect T &, T x, T y) being called as rect float r; move by( r, 3.0, 4.0 ); However, i'm getting stupid ambiguities when I use floating point numbers. event handler.cpp(43) : error C2782: 'void ' : template parameter 'T' is ambiguous could be 'double' or 'float' This message is referring to the x,y arguments. Do I really have to specialise for these types? I... |
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| cast to __nogc pointer from IntPtr (3 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hello I override the WndProc method of a control derived class and want to handle the WM NOTIFY message. The following code leads to a NMHDR pointer that points to something where all members are shown as undefined in the debugger. NMHDR nogc *pnmh static cast NMHDR nogc* (msg LParam.ToPointer()); if I redefine NMHDR as a gc struct and do the following everything works gc NMHDR gc *pnmh try cast g... |
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| Placing form class inside Namespace (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hello, When I'm wrapping a form class inside a namespace it breaks the form designer. The message "An error occured while loading the document. Fix the error, and then try loading the document again." This is annoying as I have to take the namespace away whilst editing the form. Why does this happen and how can I fix this? Thanks in advance Simon Jefferies simon@cooltoolsonline.co.uk |
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| Connecting to other pc (3 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hello, I'm creating an application which uses PerformanceCounters, and when I specify a machinename in my domain that isn't connected yet ("Access is denied"), I want to connect to it at that point. So I was wondering if there's either a way to bring up the Connect To dialog (like when you enter \\Machinename in a browser) or perhaps a way to do it without the dialog at all. TIA, Michiel. |
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| Using a form in an mfc project (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| I am an old mfc prgrammer. I have reciently obtained the latest .net pro platform. I have a small, project to complete in a tight time frame, that will control a device using ethernet packets, and will have a GUI. I initially created it using .net C mfc, because that's what I'm used to. But others in my shop have created extensive GUI contols for their interfaces using forms, and in C#. I was able... |
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| LINK : warning LNK4243: DLL containing objects compiled with /clr is not linked with /NOENTRY; image may not run correctly (2 replies) |
| microsoft.public.dotnet.languages.vc |
| When I compile my "mixed mode" C dll in Release mode, I get these warnings LINK : warning LNK4243: DLL containing objects compiled with /clr is not linked with /NOENTRY; image may not run correctly LINK : warning LNK4089: all references to 'MSVCP71.dll' discarded by /OPT:REF LINK : warning LNK4089: all references to 'OLEAUT32.dll' discarded by /OPT:REF LINK : warning LNK4089: all references to 'US... |
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| Simple Managed DLL Creation (8 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hi all, I'm fairly new to .NET and I haven't done much in C before, nothing complex anyway, but I have a pretty good understanding of programming in general. What I'm trying to do is create a .DLL that contains a lot of the functions and classes that I normally use. I've followed the examples from http://www.c sharpcorner.com/2/pr12.asp which contains a pretty good example of creating a simple .DL... |
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| Template specialization (2 replies) |
| microsoft.public.dotnet.languages.vc |
| Hello, I have a code which behaves differently if template parameter has a specified member: #include iostream template class T, bool (T::*)() class member bind { public: typedef T type; }; template class T1, class T2 class has member { public: static const bool value false; }; // 1 template class T class has member T, typename member bind T, T::member ::type { public: static const bool value true... |
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| enum handling change in VS 2005 (10 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| All, I've installed the VS 2005 Beta 1 and was trying to build our current product. I get a compile error when enum value is specified with classname::enumname::enumvalue. Seems the compiler does not want the enumname there anymore. This was not a problem with any previous versions of VS. I could not find any help in any of my programming books or in MSDN. Can anyone explain the reasons to me? Is ... |
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| Does VC++.Net support C99 standard? (5 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Does VC .Net support C99 standard? |
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| How to create a collection of managed objects (2 replies) |
| microsoft.public.dotnet.languages.vc |
| I would like to create a collection of managed objects to be exact, instances of a form which I use to display images. This collection would be similar to the controls collection which is part of every Windows form. What is the syntax to create such a collection? Could someone please point me to an example of a Collection of Managed Objects (either strongly typed or not)? Howard Weiss |
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| Splitter Window (3 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hi, I want a window on the left side of my mainframe to put a tree control on, and I want it to be horizontally resizable (like the one you can make appear on the left of the internet explorer window). I'm making a multi document application. Does anyone know how to do this fairly easily? Thanks. |
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| C++ for .NET development? (11 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| I see that of the 4 languages for which an "Express" edition was just released (C#, VB, J#, and VC), the "Visual WebDev Express" tool for building ASP.NET apps is capable of building back end code with only the first 3 of those languages [insofar as I can tell from the Web site; I have not downloaded it]. Should we interpret this to mean that even under Whidbey, with C /CLI replacing MC , the pref... |
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| Firt Admin Account (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| How can I check if a UserGroup has the First Admin Account in it? Thanks in advance |
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| port VC++ 6 codes to VS.net (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hi, Is there a document to describe the guideline to port codes from VC 6 to VS.net C (7.1) ? I found there are so many things are not backward compatible. Like: fstream.h, iostream... I am helpless now. |
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| BUG: __raise throws access violation if __unhook called from inside event handler (native events) (3 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| I need to unhook event receiver as result of native C event. It unhooks successfully, but raise does not return and throws access violation. Visual Studio 2003 How to reproduce: Consol Win32 exe project #include "stdafx.h" [event source(native)] class Publisher { public: event void Signal(Publisher* sender); void RaiseSignal() { // throws access violation raise Signal(this); } }; [event receiver(n... |
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| /clr option (3 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| Hi, I am starting to follow a book which is saying to use common language runtime (clr). So I defined a class I created as gc type and also I included mscorlib.dll but when I build the program the VC is saying c:\aldi3\cpp\helloWorld\helloWorld.cpp(7): fatal error C1190: managed targeted code requires '#using mscorlib.dll ' and '/clr' option The book does not show how to define clr option. How can... |
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| Compile As property (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| I have set the Compile As property of a project to be "Compile as C file". However, when I add a new .C file to the project, the Compile As property of the project is not inherited by the file. Do I have to override the property for every .C file? I am using Visual C .Net 2003. Thanks. |
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| Error C2065 question (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| I get an error on this line of code: LicenseKey SysAllocString(OLESTR(m strLicense)); The compiler complains: error C2065: 'Lm strLicense' : undeclared identifier The compiler is appending a capial "L" to my variable (m strLicense). There is no Lm strLicense declared anywhere in the project. Can someone explain why this is happening? Running C v7.1.3088 on XP Pro, SP1 |
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| How to do thread locking in VC++ .NET? (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| I have a .net application with several threads updating the same file. How do I do thread locking so that the file updating can be synchronized? Sample codes will be helpful. |
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| RBN_AUTOBREAK help request (2 replies, VIP) |
| microsoft.public.dotnet.languages.vc |
| I'd like to be able to use this message (RBN AUTOBREAK) with my rebar control in Windows XP, and I just can't seem to get there. The application I'm working on is a .dll that is loaded by another application. To start with, the RBN AUTOBREAK definition in commctrl.h is surrounded by an "#if ( WIN32 WINNT 0x0501)". Unfortunately, this is not defined for my application, which includes only windows.h... |
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