Managed C++/CLI Discussion Boards

Re: FileLoadException loading managed C++ class

Andy Moore22-Dec-03 10:47

Andy Moore

22-Dec-03 10:47

Thanks leppie,

It looks like by default my compiler switches were setup to build for WinXP.

Andy

Re: FileLoadException loading managed C++ class

Nick Hodapp5-Jan-04 10:59

Nick Hodapp

5-Jan-04 10:59

This sounds like a security/permissions issue. Is the 2K box loading the C++ assembly from a file share?

What are the details of the exception?

Nick Hodapp

This posting is provided “AS IS” with no warranties, and confers no rights. You assume all risk for your use. © 2003 Microsoft Corporation. All rights reserved.

Re: FileLoadException loading managed C++ class

Andy Moore5-Jan-04 11:25

Andy Moore

5-Jan-04 11:25

Nick,

No. The 2K box is loading the C++ assembly from its own disk.

The FileLoadException comes with the following message:

System.IO.FileLoadException: A procedure imported by "AVIGenerator" could not be loaded.

"AVIGenerator" is the name of my C++ assembly. I checked all of the Win32 API functions that I'm calling and they are supported on Win2K.

Would this problem have something to do with the dll entry point function that is generated. I have looked everywhere for a possible solution so far to no avail.

Thanks for your help.

Andy Moore

Managing File Allocation Tables

Manoj G.R.21-Dec-03 22:25

Manoj G.R.

21-Dec-03 22:25

I need to redirect the access request to a file to another file, by changing the File Allocation Address for a file from within my program.

with all the best wishes

Manoj G.R,
grmanoj@yahoo.co.in

How to make Managed DLL in VC to use in VB.net

Member 1679221-Dec-03 2:05

Member 16792

21-Dec-03 2:05

I developed one DLL in VC6 through win32 dll.
Then i called this dll in vb6 and i got accurate result. No problem at all.

Now i am trying to use this dll in vb.net but result is not accurate. The reason is vc6 produce unmanage dll that vb.net cannot use. Now i need to make Managed dll.

Can you guide me step by step to make Managed Dll and send me small example for Managed DLL. Should i use VC6 or VC.net for Manage dll development.

In the example use the function to get square of a number like below

int squareMe(int x)
{
return (x*x);
}

Hope to get reply soon

Re: How to make Managed DLL in VC to use in VB.net

John M. Drescher21-Dec-03 4:15

John M. Drescher

21-Dec-03 4:15

I am not an expert but .net should be able to use a unmanaged dll without recompiling. I am not sure how to do this though.

John

Re: How to make Managed DLL in VC to use in VB.net

Roger Stewart30-Dec-03 6:37

Roger Stewart

30-Dec-03 6:37

riaz_muhammad wrote:
Can you guide me step by step to make Managed Dll and send me small example for Managed DLL.

Refer to the Visual Studio Walkthroughs[^] to get started with C++.NET.

riaz_muhammad wrote:
Should i use VC6 or VC.net for Manage dll development.

You can not use VC6 to create a managed DLL.

riaz_muhammad wrote:
Now i am trying to use this dll in vb.net but result is not accurate. The reason is vc6 produce unmanage dll that vb.net cannot use. Now i need to make Managed dll.

You CAN use your unmanaged DLL from VB.NET. Refer to the following MSDN help lik, Consuming Unmanaged DLL Functions[^].

Roger Stewart
"I Owe, I Owe, it's off to work I go..."

how to use 256 colors bitmap in ctreectrl?

arthur69090820-Dec-03 16:06

arthur690908

20-Dec-03 16:06

i have designed several bitmap resources in vc using 256 colors Cry | :((

, which can display normally in resourceview. but when i added them in program, the displayed colors of them is 16 colors. the program is as follows:
COLORREF clrBk = RGB (255, 0, 255);
CBitmap bmp;
TRY{
m_ilsTamisTree.Create(IDB_TAMIS_s, 16, 1, clrBk);//sysytem
bmp.LoadBitmap(IDB_DATUM_9_s); //datum
m_ilsTamisTree.Add(&bmp, clrBk);
bmp.DeleteObject( );
...
}
CATCH(CMemoryException, e)
{
e->ReportError();
}
END_CATCH
,
i have tried to add iamge using icons like m_ilsTamisTree.Add(AfxGetApp()->LoadIcon(IDI_ICON1));
but it didn't work also,
how can i do?

arthur

Re: how to use 256 colors bitmap in ctreectrl?

leppie20-Dec-03 22:35

leppie

20-Dec-03 22:35

wrong forum,.....

leppie ::AllocCPArticle("Zee blog");
Seen on my Campus BBS: Linux is free...coz no-one wants to pay for it.

__CxxCallUnwindDtor unresolved

Rick York19-Dec-03 13:38

Rick York

19-Dec-03 13:38

I am getting a linker error saying "unresolved external symbol "void __cdecl __CxxCallUnwindDtor..."

Does anyone know how to fix this ?

The Ten Commandments For C Programmers

Re: __CxxCallUnwindDtor unresolved

leppie20-Dec-03 22:49

leppie

20-Dec-03 22:49

I have seen this somewhere before, try searching the whole forum or google groups Smile | :)

leppie ::AllocCPArticle("Zee blog");
Seen on my Campus BBS: Linux is free...coz no-one wants to pay for it.

Re: __CxxCallUnwindDtor unresolved

Rick York22-Dec-03 10:01

Rick York

22-Dec-03 10:01

Um, yeah, thanks. Searches are the first thing I do. Posts here are the result of exhausting all other options.

I found the cause of the problem. I had a virtual destructor in a Form. I removed that and the problem cleared up.

The Ten Commandments For C Programmers

diall_up connection

heba_zien19-Dec-03 3:21

heba_zien

19-Dec-03 3:21

hi i making a program to make dial-up connection and connecting to the net ,i dial with numbers stored in database , i use win API
like(InternetDial() ,InternetHangUp()), but i have two problems

1)InternetDial is dialing with default network connection on pc.
i need to make it taking numbers from database.?????

2) i want to create a new dial-up connection on pc, idont now what function i can use

thank u for advanced help
send me on hz_csharp@hotmail.com

Making a control array with windows forms

Ffelagund17-Dec-03 23:27

Ffelagund

17-Dec-03 23:27

Hello, i have a set of controls very similars (for example, 8 TextBox), and i want to create them in a TextBox array with Windows Forms Designer. In VB5 i done it putting the same Name property to all of them, but in C++ managed with Windows Forms Designer, i don't find the way.
I want to avoid make it by code because i have a lot of these type of controls.

P.D: forget my bad english please Smile | :)

Re: Making a control array with windows forms

Nick Hodapp18-Dec-03 7:44

Nick Hodapp

18-Dec-03 7:44

Control Arrays aren't available in the current Visual Studio 2003 product, for any language. I believe we're working to reintroduce them in the Whidbey product.

Nick Hodapp

This posting is provided “AS IS” with no warranties, and confers no rights. You assume all risk for your use. © 2003 Microsoft Corporation. All rights reserved.

Re: Making a control array with windows forms

leppie20-Dec-03 22:45

leppie

20-Dec-03 22:45

Ffelagund wrote:
I want to avoid make it by code because i have a lot of these type of controls.

Why not code one control manually in a loop?

leppie ::AllocCPArticle("Zee blog");
Seen on my Campus BBS: Linux is free...coz no-one wants to pay for it.

Re: Making a control array with windows forms

Ffelagund20-Dec-03 23:10

Ffelagund

20-Dec-03 23:10

That doesn't be useful to me. For example, i have 8 TexBoxes, 8 CheckBoxes, and 8 Buttons, that all do the same function but with a diferent target (every textbox, checkbox and button handles some properties of every texture unit (i'm writing an OpenGL application), when i must check what button,textbox or checkbox has been changed/pulsed/etc, i must go trought all of them (one by one), and repeat a bunch of code. Currently i make an array of pointers and assign the controls to it, and do all the stuff in a loop, but this have some disadvantage because all must be manual (events and delegates) and the code becomes dirty because the "array-individual" mixted handling.

CodeDOM questions...

bouli17-Dec-03 11:18

bouli

17-Dec-03 11:18

Hi there,

I want to build an RPL compiler (for HP calculators) in Managed C++.
I discover Managed C++ and .NET (I come from MFC), I saw the CodeDOM set of classes.
Will these classes help me to write my compiler?

In this RPL compiler, I want input a text file (with keywords, syntax etc.), and it generates a series of code ready to be linked. and once the program is linked, download it in the calculator Smile | :)

If CodeDOM is the correct tool for what I wanna do, can anybody show me some samples about CodeDOM?

Thanks for the help.

Best regards.

Bouli.

Re: CodeDOM questions...

leppie18-Dec-03 6:35

leppie

18-Dec-03 6:35

CodeDom is quite esy, but painfull to write (too much typing IMO), but seeing a RPL calc only uses simple operations, I suugest you look into dynamic assemblies, created with Reflection.Emit. As a starting point, look at AppDomain.DefineDynamicAssembly().

Good luck Smile | :)

leppie ::AllocCPArticle("Zee blog");
Seen on my Campus BBS: Linux is free...coz no-one wants to pay for it.

Re: CodeDOM questions...

bouli18-Dec-03 7:10

bouli

18-Dec-03 7:10

Hi,

Thanks for answering me Smile | :)

what I want to do is not an RPL calculator, but making a full compiler that will recognize syntax, keywords and so on from RPL language (it contains assembler too) and it will generate binary code that will run directly in the calculator.
ie:

the RPL programm look like this

::
ClrDA1Ok * clear 1st line
"Hello world" DISPROW1 * display "Hello world" on the 1st line with medium font
;

The compiler will generate the binary code that when it will run on the calculator...
For the compiler, in this example, only "::" and ";" are keywords.
ClrDA1OK and DISP1 are instructions (from a file) that correspond to readable entry point in the ROM of the calculator.

a declaration look like this:

=ClrDA1OK EQU #390CC *
=DISPROW1 EQU #1245B *

when the compiler sees ClrDA1OK, he knows that it has to replace this by "CC093" (inverted code for #390CC) = and EQU are keywords (this definitions are differents from the DEFINE keyword Poke tongue | ;-P

)

This compiler, has lot of keywords and it can mix assembler & RPL. I think, the best way to do that will be into 3 programs:
- Preprocessor (it will generates lines of textual code ready to be assembled)
- Assembler (it takes lines of code, handly written or generated by the preprocessor into machine code independent from the HP platform HP48-HP49 etc...)
- Loader/Linker (it generates the apropriate code ready to be transfer in the apropriate calculator)

I think .NET can do the job in a more easy way as MFC. .NET framework provides a lot of classes that are designed for this job Smile | :)

Maybe you or someone can show me what way to ride...

Best regards.

Bouli.

Using the InternetExplorer object in a Managed C++ application

Chris Morrison16-Dec-03 11:59

Chris Morrison

16-Dec-03 11:59

Hi all,

I am trying to use the InternetExplorer object to automate Internet Explorer from my Managed C++ application;

The following is a snippit of C# code that compiles and runs.

using SHDocVw;<br />
............<br />
............<br />
private SHDocVw.InternetExplorer m_IExplorer = null;<br />
..............<br />
............<br />
..........<br />
m_IExplorer = new SHDocVw.InternetExplorer();

However, when I convert it to Managed C++, thus;

using namespace SHDocVw;<br />
............<br />
............<br />
private: SHDocVw::InternetExplorer m_IExplorer;<br />
..............<br />
............<br />
..........<br />
m_IExplorer = new SHDocVw::InternetExplorer();

I get the compile error

C3153: 'SHDocVw::InternetExplorer' : you cannot create an instance of an interface

Does anyone know what I am doing wrong?

Regards,

Chris

Re: Using the InternetExplorer object in a Managed C++ application

Roger Stewart16-Dec-03 14:54

Roger Stewart

16-Dec-03 14:54

Change

Chris Morrison wrote:
private: SHDocVw::InternetExplorer m_IExplorer;
m_IExplorer = new SHDocVw::InternetExplorer();

To

SHDocVw::InternetExplorerClass* ieForAutomation;
ieForAutomation = new SHDocVw::InternetExplorerClass();

Take a look at the VC.NET - Interop - Automate IE example found in the MSDN Visual C++ .NET 2003 Code Samples[^]. I bet this sample is doing some of the exact stuff you are trying to do!

Roger Stewart
"I Owe, I Owe, it's off to work I go..."

Re: Using the InternetExplorer object in a Managed C++ application

Chris Morrison16-Dec-03 15:02

Chris Morrison

16-Dec-03 15:02

Roger Stewart wrote:
Change

Chris Morrison wrote:
private: SHDocVw::InternetExplorer m_IExplorer;
m_IExplorer = new SHDocVw::InternetExplorer();

To
SHDocVw::InternetExplorerClass* ieForAutomation;
ieForAutomation = new SHDocVw::InternetExplorerClass();

Thanks Roger, I just cracked it by looking though the MSDN Library. Thank you for that link as well, that sample should come in very handy.

Kind Regards,

Chris

how can i access system.web classes in a managed class library?

godzooky10-Dec-03 3:16

godzooky

10-Dec-03 3:16

i am not able to add a reference from the project menu.

Re: how can i access system.web classes in a managed class library?

Nick Hodapp16-Dec-03 6:37

Nick Hodapp

16-Dec-03 6:37

In the "Add Reference" dialog (_not_ "Add Web Reference"), on the ".NET" tab, scroll down and select "System.Web.DLL". Add it to the project references by clicking the Select button, then OK.

Alternatively, you can manually identify references to the compiler in code with #using, or on the command line with the "/FU" flag.

Nick Hodapp

This posting is provided “AS IS” with no warranties, and confers no rights. You assume all risk for your use. © 2003 Microsoft Corporation. All rights reserved.

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