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Sorry about that
DLGPROC pfn;
pfn = (DLGPROC) MakeProcInstance((FARPROC) pfnDialog, AfxGetApp()->m_hInstance);
nRet = (L_INT) DialogBoxParam(AfxGetApp()->m_hInstance, MAKEINTRESOURCE(nDialog), hWnd, pfn, lParam);
FreeProcInstance((FARPROC) pfn);
Regular DLL using / linked with MFC (NOT static, same as main app)
within wincore.cpp here is where it fails
// should be a normal window
ASSERT(::IsWindow(m_hWnd));
// should also be in the permanent or temporary handle map
CHandleMap* pMap = afxMapHWND();
ASSERT(pMap != NULL);
I have to ask the programmer of the main app some questions. I agree with you so far so I think there has to be something in our code messing something up.
Tony Teveris
Gerber Scientific Products
Senior Software Engineer
Phone: 860 648 8151
Fax: 860 648 8214
83 Gerber Road West
South Windsor, CT 06074
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Tony Teveris wrote: I have to ask the programmer of the main app some questions.
Yes 
The module state stuff can affect CWnd pointers across the EXE/DLL
module boundary depending on the type of DLL. This needs to be managed correctly.
The CHandleMap is related to the module state. Your CView is in the EXE's map but in the
DLL function, you've changed the module state, so when the callback is called, the
code on the EXE side isn't finding the CView object in the DLL's map.
That's why the type of DLL is important. With a properly initialized extension DLL,
you don't need to use the AFX_MANAGE_STATE macro. Using an MFC extension DLL
is definitely the best/easiest for passing CWnds back and forth across the EXE/DLL boundary.
The drawback to an extension DLL is it can't be used by a non-MFC EXE.
If you must use a standard DLL, then you'll need to manage the module state for
your callback.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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It is NOT an extension DLL, just a normal DLL. I see your point and will look into extension DLL or mangage the state in the callback.
I think were done here - many thanks
Tony Teveris
Gerber Scientific Products
Senior Software Engineer
Phone: 860 648 8151
Fax: 860 648 8214
83 Gerber Road West
South Windsor, CT 06074
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Tony Teveris wrote: It is NOT an extension DLL, just a normal DLL
Cool. Try adding this to the top of the callback...
AFX_MANAGE_STATE(AfxGetAppModuleState());
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Dear all;
I have finished building an MFC Application in Microsoft visual studio 2003. Now I would like to produce an executable application which can be used in any machine.
How do i do that? please post any articles or help guidelines.
I am thankful
llp00na
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llp00na wrote: which can be used in any machine.
I think you need to be more specific, "any machine" would include my refrigerator.
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Oh sorry,
I meant any computer machine which has windows XP installed on it.
llp00na
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Deployment of MFC applications is documented on msdn so you can find everything you need there. Perhaps some searching like this[^] would help.
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I have finished building an MFC Application
What does a "build" actually refer to?
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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I meant implementing or coding. The point i am trying to express if that i have tested the application within Microsoft visual studio 2003 and it works great. Now i would like to run the application outside the development environment.
I hope this is clear enough.
llp00na
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Oh! hmm, well haven't you ever opened your project folder? Have you seen these folders? "Debug" "Release" ? All the binaries you build will get created there. If your .exe doesn't have any dependency, you can take that .exe straight from the "release" folder and distribute. but it's not the usual case. Even if you do something with MFC, it will become mfc dlls dependant. (assuming you are linking dynamically). So use an installer like "Innosetup" (google for it). it's free and cool. You can deploy apps on the fly. 
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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lol, indeed i have opened my project folder so many times. I have tried using the '.exe' file from the release folder but i encountered problems and thats why i posted this question. As you said it must have dependencies.
Ok, i will look for Innosetup and try it.
Thank you
llp00na
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It Depends![^]
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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you mean an installation package ?
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which can be used in any machine.
How do i do that?
Here![^]
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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Hello,
I am working for C project. The codebase exist since long time(more than 10 years).
We are using lots of structures with fixed array size. Like
struct tagMystruct
{
char name[256];
char disign[256];
.
.
}
Now new requirement came, I have to change fixed size arrays to dynamic arrays. I defined new array like
struct tagMystruct
{
char *name;
int nameLength;
char *disign;
int disgLength;
.
.
}
Is this correct approcach? In my existing code in lot many places we are using strcpy, strcat etc..
Now i have to check the buffer all the place before calling any function. It will take more time and regression? Can i know how can achive or any new ways?
Thanks and Regards,
Chandu
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If the requirement is it must remain C code, then you have to do something like that you've exposed in your post.
However, if you can afford the C++ power then I strongly suggest to use STL's std::string instead of char * (at least toxcct will be happy  ).
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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As another wrote, think whether it can be a C++ project so, you can use classes. For instance you can use the std libs or the MFC (with CString). There are a lot of other classes here at CP.
Try to develop with structs, as
stringStruct
{
int l;
char *p;
}
If you cant use classes you should think about implementing often used operations in funktions.
SetString( stringStruct *p, "new string" )
{
//do stuff
}
Greetings from Germany
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chanduabcchandu wrote:
struct tagMystruct
{
char *name;
int nameLength;
char *disign;
int disgLength;
...}
Yes, you can do that since you mention that it is a "C" project, hence no C++ code. If you can build the project in C++, you can then use string objects (MFC's CString, STL's std::string) that will handle the memory allocations for you as well as supply methods for assignment, concatenation/appending, etc.
If you have to stick with the manually-managed buffers, be sure that when calling the string-related functions, you take care to use the n versions of the functions, like strncpy(...), so that you can help protect yourself from buffer overruns.
Peace!
-=- James Please rate this message - let me know if I helped or not!<hr></hr>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles
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There's one thing you shouldn't forget. that's to delete the "new"ly allocated buffers.
But,std::strings. Just awesome.
OK,. what country just started work for the day ? The ASP.NET forum is flooded with retarded questions. -Christian Graus
Best wishes to Rexx[^]
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I am working on a project, where i have to catch event on Update of the particular control , message is already defined for it.
Between BEGIN_MESSAGE_MAP and END_MESSAGE_MAP i am putting
ON_MESSAGE (Messagename,UpdateFunction) statement with message and function name as a parameter.
i have written definition of UpdateFunction in the same class.
Problem  is while running and updating control UpdateFunction is not getting executed. 
is there anything i am missing for handling this ?
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Do you SendMessage or PostMessage to the class that you defined message in it or the framework should do that for you?
Did you define a custom message or just redirect the same message?
Which message is it? What type of control? Is it a custom control for example?
Would you please provide some of your codes or at least more details.
// "In the end it's a little boy expressing himself." Yanni
while (I'm_alive)
{
cout<<"I love programming.";
}
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yah its a custom control and message is also a custom one , redirecting to other message ... , i mean to say that its a custom table control when i update a cell value it should get to that method which i have specified in On_Message ...
I just wanted to ask that is there anything that we have to do while handling messages
1)Define entry in message map
2)provide declaration and definition of Method (which you want to execute on event of message)
Tahnx
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