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I added #pragma once in first line of classes.h but I still get that error
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I dont know if this is the same linking error that I encountered once, but any way try to delete the debug folder from your project, you will find 2 debug folders inside your project, delete the inner one then rebuild your solution.
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hi,
I am trying to develop a programme to let the user key in their name, then compare their name to the input file i have created using a notepad. Can anyone suggest me how to check the name key in by the user to the names in the input file? The programme which i am trying to develop is some sort like a programme to identify the user and hence tell them what class do they need to attend,when,where.
THANKS.
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URGENT doesn't really help.
Is this a a C++/CLI program, or are you in the wrong forum ? File.ReadAllText will read your file for you.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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I use InstallShield for my project. My project has database, i put it to Install Shield's "Application Folder", although i changed the connection string "c:\Documents and Setting\bla bla bla\xxx.mdb" to "xxx.mdb" (software runs my computer well with this string), i don't run it correctly on an another computer after installed it. It crashed when program tried to reach database. An error generated like this "c:\Documents and Settings\........\xxx.mdb couldn't be found". I don't understand  Why it didn't work although i changed the connection string? Can anybody hel me please ?
-- modified at 5:00 Saturday 31st March, 2007
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Thanks for your reply. I tried to do your suggests. I find that the problem is dataset. However i changed the connectionstring in the forms, connectionstring in dataset remains. What i can do for it? Can i write a function to dataset.h? like
"
String^ path = Application::StartupPath;
this->oleDbConnection1->ConnectionString = L"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\""+path+"\\xxx.mdb\"";
"
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Ok..Finally i solved the problem. If anyone has the same problem, just replace the whole path (eg. "C:\Documents and Settings\XYZ\My Documents\Microsoft Visual Studio 2005\Projects\Release\") ConnectionString in Dataset Header with |DataDirectory|
this->_connection->ConnectionString = L"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\"|DataDirectory|\\xxx.mdb\"";
and if you have connection in form, write a simple code in Form_Load event, replace ConnectionString with something like :
private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e) {
String^ path = Application::StartupPath;
this->oleDbConnection1->ConnectionString = L"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\""+path+"\\hasta.mdb\"";
}
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I get an ASSERT(::IsWindow(m_hWnd)) when i try update a CEdit item in from another class like
Myclass c; c.OnUpdate();
what do i need to do to solve this issue?
Any sugestions appreciated.
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FredrickNorge wrote: what do i need to do to solve this issue?
IsWindow() is returning false because the m_hWnd HANDLE is not a valid HANDLE. Windows have to be "Created" before a HANDLE exists. In MFC look at something like CWnd::Create(.....)
If you are just starting Windows programming you should in use a tutorial and/or invest in book(s).
led mike
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such as.... VERIFY(m_dlg1.Create(Main::IDD, this));
EDIT:
the dialog is already drawn and past OnInitDialog, however i am using tabing so all dialogs are visible at the same time.
-- modified at 18:20 Friday 30th March, 2007
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FredrickNorge wrote: however i am using tabing so all dialogs are visible at the same time.
I don't understand the significance of that.
FredrickNorge wrote: such as.... VERIFY(m_dlg1.Create(Main::IDD, this));
Well that's an example but even an edit control is a window that must be created. Are you creating controls dynamically? Another reason MFC m_hWnd doesn't work is when you try to use them from worker threads.
led mike
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Hello,
I have a COM DLL using 2D safearrays. I want to use the Interface in C# and managed C++ and need to marshall the 2D array somehow. Can anyone help me with the syntax please?
Regards,
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How can I go about making a c++ program that will read a file in hex, search for a particular hex value, and replace it?
Thanks.
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If you had a specific technical question, that would help.
If you don't know the first thing about writing a program, I suggest you examine some beginner's books and tutorials.
--------------------------------
"All that is necessary for the forces of evil to win in the world is for enough good men to do nothing" -- Edmund Burke
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well, first of all, you could ask in the right forum. This is the C++/CLI forum. Second, you could try asking a specific question, instead of one that is very hard to answer properly, because it is so broad.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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I am looking for an experienced pccts / antlr user!
I have made a (c++) parser using Antlr, now I like to
allow INCLUDE statements in my target files for this
parser.
How to implement this?
So, while parsing, I like my compiler to switch to
another file as it finds the INCLUDE statement as
if it was part of the (main) target file.
Is there a sample project available with such option?
Please respond (or mail to ruudvdmeer@hotmail.com )
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You'll have to implement something called a Preprocessor. The preprocessor looks at the files before the parser ever sees them, and it writes an output file that contains all the "INCLUDE" files in the right order.
--------------------------------
"All that is necessary for the forces of evil to win in the world is for enough good men to do nothing" -- Edmund Burke
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hi all
i want to know about the connectivity of c++ with database sql and
how can i fetch and eneter data into sql database from my front end c++
thanks all
please send me this answer in detail
hi
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please tell me the code for this
thanks
hi
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Maybe you'll get lucky and someone will code this for you, but I doubt it.
See here[^] for possible methods of connecting to a database.
Pick a technology and I'm sure you'll find plenty of example articles here.
Mark
"If you can dodge a wrench, you can dodge a ball."
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paras_s12 wrote: please send me this answer in detail
1. You have correctly posted this question in VC++ forums, which is most appropriate for this question. So dont cross post.
2. Be patience enough, give time to others to solve your query.
3. Don't go against community rule/spirit, by asking question in rude manner.
4. Finally, Read this[^] post, before posting any further questions in this forum.
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Hello,
I have time hh::mm as string. This string can have * as wildcard .
So,
if time is 13:1*, whenever i query for the next valid time, this should be 13:10,13:11....13:19.
if time is 13:**, the next valid time should be 13:00,13:01,...13:10,13:11,......13:59.
I am finding it difficult to implement this. (in C++)can anybody help me out by suggesting some algorithm.
thanks in advance.
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