Managed C++/CLI

Trankil15-Mar-06 20:15

Trankil

15-Mar-06 20:15

Ok . It's more . But how much exactly ? can I set 4096 characters to a String ?

George L. Jackson16-Mar-06 3:10

George L. Jackson

16-Mar-06 3:10

A 4096-character string wouldn't be a problem. You have a lot of room to work with? Just remember that the string-type does not mutate. Everytime you make a change, .NET creates a new instance with the change. There may be exceptions to this but a string is pretty much immutable. Of course, StringBuilder is mutable but it has its own overhead.

George L. Jackson15-Mar-06 10:47

George L. Jackson

15-Mar-06 10:47

Since the String.Length property's type is Int32, it might be 2,147,483,647. Using large strings, can lead to a HEAP of trouble!

-- modified at 17:58 Wednesday 15th March, 2006

Parallel Port Programming Question

prrusa16-Mar-06 2:19

prrusa

16-Mar-06 2:19

HEAP of trouble... Wink | ;-)

kmaster15-Mar-06 4:41

kmaster

15-Mar-06 4:41

I'm testing my parallel port with the Borland C 5.5 compiler:

.....
.....
.....
while(!kbhit())
{
int data;
data=(inp32)(PORT+1);
gotoxy(3,10);
printf("Data available in status register: %3d (Decimal), %3X (hex)\n", data, data);
printf("\n Pin 15: %d",(data & 0x08)/0x08);
printf("\n Pin 13: %d",(data & 0x10)/0x10);
printf("\n Pin 12: %d",(data & 0x20)/0x20);
printf("\n Pin 11: %d",(data & 0x80)/0x80);
printf("\n Pin 10: %d",(data & 0x40)/0x40);
delay(10);
}

When I compile the program, it gives the following error:
Error: Unresolved external '_delay' reference from location

What is the use of delay(10) and gotoxy(3,10) in the program? Please advice. Sigh | :sigh:

Thank You

-- modified at 10:43 Wednesday 15th March, 2006

VS2005 program won't run

DRHuff15-Mar-06 4:33

DRHuff

15-Mar-06 4:33

I have compiled a VC6.0 project under VS2005 and it compiles fine but when I try to run it on a machine that doesn't have VS2005 installed it comes up with:

"This application has failed to start because the application configuration is incorrect. Reinstalling the apllication may fix this problem."

So I guess that a single executable is no longer enough. What else do I need?

Any help is greatly appreciated.

I'm pretty sure I would not like to live in a world in which I would never be offended.

I am absolutely certain I don't want to live in a world in which you would never be offended.

Dave

toxcct15-Mar-06 5:04

toxcct

15-Mar-06 5:04

provides the correct dlls with your application...

ps: did you notice that you were writing in a managed C++ forum ?
your question seems to have nothing to deal with MC++ code as it comes from VC6. so, next time, please post on the correct forum. thanks

DRHuff15-Mar-06 9:26

DRHuff

15-Mar-06 9:26

Thanks - how do I determine which DLLs it needs?

re P.S.

Which forum would you recommend? Is this a problem with managed C++? .NET framework? Soapbox?

I couldn't decide so I took a shot at the one I thought might have people responding who have run into this problem before.

I'm pretty sure I would not like to live in a world in which I would never be offended.

I am absolutely certain I don't want to live in a world in which you would never be offended.

Dave

toxcct15-Mar-06 21:18

toxcct

15-Mar-06 21:18

with Dependency Walker[^]

Christian Graus15-Mar-06 9:42

Christian Graus

15-Mar-06 9:42

The Managed C++ forum is for managed C++. Unless you created a new project, your project is not MC++, by definition, so the Visual C++ forum is the one you wanted.

If your app uses MFC, you need the MFC 8 dlls. If you use the C run time, you need the MSVCRT 8 dlls. To add insult to injury, these dlls require installation in the WinSXS directories, I believe.

There used to be a tool called 'depends' ( from memory ) which told you what your app needed. I think it came with VC6, so you probably have it.

Christian Graus - Microsoft MVP - C++

DRHuff15-Mar-06 10:02

DRHuff

15-Mar-06 10:02

Thanks - sorry about the wrong forum.

I'm pretty sure I would not like to live in a world in which I would never be offended.

I am absolutely certain I don't want to live in a world in which you would never be offended.

Dave

New Learner & a easy question needs answer

Christian Graus15-Mar-06 10:05

Christian Graus

15-Mar-06 10:05

DRHuff wrote:
sorry about the wrong forum.

That's cool. I only commented in depth to answer your question to another reply, and I'd only mention it because the right forum will get you a better hit rate for answers. The only 'wrong' forum that's a sin to post to here is the lounge ( that is, with programming questions ) Smile | :)

Christian Graus - Microsoft MVP - C++

fengmeiyu_198215-Mar-06 2:39

fengmeiyu_1982

15-Mar-06 2:39

After I Build it ,It says:
"LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Debug/my_c.exe : fatal error LNK1120: 2 unresolved externals" while no error(s) and no warning(s) when I Compiled it.
Thanks for help!

Re: New Learner & a easy question needs answer

Polity4h15-Mar-06 10:49

Polity4h

15-Mar-06 10:49

Make sure your linker directories are set right, and that LIBCD.lib is avail for your linker.

Creating an managed class in an umanaged class

anderslundsgard14-Mar-06 23:41

anderslundsgard

14-Mar-06 23:41

I want to start using a .NET dll in my “old” MFC project. How do I create a managed class member inside an unmanaged class?
Here is an example of my h-file:

#pragma once<br />
class CViewerVS8_TestProjectDlg : public CDialog<br />
{<br />
…<br />
private:<br />
	CDBLibHandler^ db = gcnew CDBLibHandler();<br />
};

… and I got the compiler error: error C2143: syntax error : missing ';' before '^'

_____________________________

...and justice for all

APe

wrong error message...

anderslundsgard14-Mar-06 23:43

anderslundsgard

14-Mar-06 23:43

Here is the right error message:

error C3265: cannot declare a managed 'db' in an unmanaged 'CViewerVS8_TestProjectDlg'

_____________________________

...and justice for all

APe

Re: wrong error message...

Nemanja Trifunovic15-Mar-06 1:31

Nemanja Trifunovic

15-Mar-06 1:31

Use gcroot[^]

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Instantiating Windows Form

John L. DeVito14-Mar-06 11:08

John L. DeVito

14-Mar-06 11:08

Heyas all,

I've added a new form to my project called ExitForm. In the main form of the project I've added #include "ExitForm.h". I'm trying to do the following:

<br />
void onSomeEvent(object^ sender, EventArgs^ e)<br />
{<br />
ExitForm^ eForm = gcnew ExitForm();<br />
eForm->ShowDialog();<br />
}<br />

I get ExitForm: undeclared identifier

Can anyone shed some light on what I'm forgetting to do to make ExitForm visible to other files in the project?

Thanks,
John

Saksida Bojan14-Mar-06 19:12

Saksida Bojan

14-Mar-06 19:12

I don't see any problem with your code.

do you have in ExitForm.h:
public ref class ExitForm : public System::Windows::Forms::Form

or did you define namespace?

John L. DeVito15-Mar-06 7:43

John L. DeVito

15-Mar-06 7:43

Yes, the form was created by visual studio, so the namespace is correct, and the form is inherited correctly.

This is driving me nuts!

Thanks,
John

Saksida Bojan15-Mar-06 8:54

Saksida Bojan

15-Mar-06 8:54

Did you have any syntax problem in ExitForm.h?

If no then delete/remove ExitForm.h And Recreate