Managed C++/CLI

Re: How to get HWND from System::Windows::Forms::Panel^ panel [modified]

15-Oct-07 5:54

Interesting. I don't have that utility either. In fact, I'm pretty sure
I've never found any utilities I wanted to find in VS. Yes, there's ones there
I never use...

*shrug*

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Newbie0015-Oct-07 7:00

Newbie00

15-Oct-07 7:00

I think i'm passing correct DC.

<br />
void TFigure::SetupPixelFormat()<br />
{<br />
  int nPixelFormat = 0;<br />
   PIXELFORMATDESCRIPTOR pfd = {<br />
  sizeof(PIXELFORMATDESCRIPTOR),<br />
  1,<br />
  PFD_DRAW_TO_WINDOW |<br />
  PFD_SUPPORT_OPENGL |<br />
  PFD_DOUBLEBUFFER,<br />
  PFD_TYPE_RGBA,<br />
  32,<br />
  0, 0, 0, 0, 0, 0,<br />
  0,<br />
  0,<br />
  0,<br />
  0,0,0,0,<br />
  16,<br />
  0,<br />
  0,<br />
  PFD_MAIN_PLANE,<br />
  0,<br />
  0, 0, 0 };<br />
<br />
  nPixelFormat = ChoosePixelFormat( m_gHDC, &pfd );<br />
  SetPixelFormat( m_gHDC, nPixelFormat, &pfd );<br />
}<br />

ChoosePixelFormat( m_gHDC, &pfd ); returns 7.

-- modified at 13:35 Monday 15th October, 2007

STL map = Hashtable, what about STL multimap?

devvvy13-Oct-07 16:44

devvvy

13-Oct-07 16:44

STL map = Hashtable, what about STL multimap? Equivalent?

STL Reference[^]

Thanks a bunch.

Re: STL map = Hashtable, what about STL multimap?

Christian Graus13-Oct-07 17:15

Re: STL map = Hashtable, what about STL multimap?

13-Oct-07 17:15

There isn't one

Christian Graus - Microsoft MVP - C++

"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 )

devvvy13-Oct-07 17:18

devvvy

13-Oct-07 17:18

Hi Chris, thanks. Any reason why there isn't an equivalent in .NET ICollection[^]?

I use Hashtable quite often... but I suppose there're application for multimap too...?

Re: STL map = Hashtable, what about STL multimap?

Christian Graus13-Oct-07 18:15

please introduce me (Managed) C++

13-Oct-07 18:15

My guess is that the C# team wanted to keep it simple, that appears to be their overall ratonale. I love associative containers, I use them all the time.

Christian Graus - Microsoft MVP - C++

"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 )

STL map != Hashtable

kuibing14-Oct-07 17:27

kuibing

14-Oct-07 17:27

MFC's CMap = HashTable.
STL map = Red-Black Tree.

chandu00412-Oct-07 23:56

chandu004

12-Oct-07 23:56

hi all masters,
i had been seeing this forum's link since many days.
but i thought that, i dont know about it, so lets not enter it.
but today i got an idea, why cant i get educated about managed c++.
i love codeproject and i love the members here, who help the people.
so i thought, if i post this here, somebody can give a brief paragraph exlanation about managed c++, and refer me some books on the web, such that, i will do some home work, and get back here with many interesting questions and lets see if i would be able to solve any?
by the way,
my skill set is,
c,c++,vb,vc++6.0 since 4+ years and nothing else.
and also suggest me, weather my skill set is sufficient to know about managed c++.

Christian Graus13-Oct-07 0:03

13-Oct-07 0:03

Managed C++ is simply the first iteration of C++ extensions to allow for using .NET classes in C++ and write .NET assemblies in C++. It was used in VS 2002 and 2003. In VS2005, this was overhauled, and we now have C++/CLI. IMO, it's still a disaster, and you're still better off learning C#. However, Nish has written a great book on C++/CLI ( published by Manning ), if you want to learn it, start there.

Christian Graus - Microsoft MVP - C++

"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 )

chandu00413-Oct-07 0:10

chandu004

13-Oct-07 0:10

oh thanks for such a nice and brief explanation sir,
since it is something related to dotnet, i feel that, it is not in my scope, as of now.
now iam well of with vc++6.0.
in future, i do have a plan to get awareness towards dotnet.
once again many more thanks for your concern.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

[SOLVED isn't it?]

Luc Pattyn13-Oct-07 2:59

Luc Pattyn

13-Oct-07 2:59

Luc Pattyn [Forum Guidelines] [My Articles]

this months tips:
- use PRE tags to preserve formatting when showing multi-line code snippets
- before you ask a question here, search CodeProject, then Google

#realJSOP15-Oct-07 5:38

#realJSOP

15-Oct-07 5:38

Why is the C++/CLI stuff a disaster? I'm not arguing, I just want to know because I may have to make use of it...

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Mark Salsbery15-Oct-07 6:02

15-Oct-07 6:02

I personally find it works well. It's the most useful (to me) thing
that's been added to Visual C++, well, ever.

The Managed Extensions were kind of a "disaster" with
confusing syntax and lack of some useful keywords, but
the new C++ syntax is pretty nice to use.

I guess for C# programmers, all of C++ is a disaster
(;P Christian)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Hamid_RT19-Oct-07 6:55

Hamid_RT

19-Oct-07 6:55

See this[^] thread.

Problem with array.

cshong12-Oct-07 21:38

cshong

12-Oct-07 21:38

I'm using Microsoft Visual C++ 6.0.

I have the following codes in my program:

int x;<br />
cout<<"Enter a number: ";<br />
cin>>x;<br />
double Num[x];

The following errors are occured:

1. error C2057: expected constant expression
2. error C2466: cannot allocate an array of constant size 0
3. error C2133: 'Num' : unknown size

How to solve my problem?

Please do not tell me to enter something like "int x=100" or "int Num[100]". I want to the user of my program set the size of the array.

Any reply will be appreciated.

Re: Problem with array.

Christian Graus12-Oct-07 23:01

C++ to calculate the Reaiman Sum

12-Oct-07 23:01

cshong wrote:
I'm using Microsoft Visual C++ 6.0.

Then you must be in the wrong forum ( VC7 was the first to support managed C++ ). Try the visual c++ forum.

The answer is that you need to dynamically allocate via a pointer if you don't know the array size at compile time. But, next time, this is the wrong forum.

Christian Graus - Microsoft MVP - C++

"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 )

Re: Problem with array.

cshong12-Oct-07 23:06

cshong

12-Oct-07 23:06

Thanks for the reply. Any administrator please move this thread to the right forum please.

Nestafary12-Oct-07 7:49

Nestafary

12-Oct-07 7:49

I need the c++ program wich can calculate the centroid of the curve with the Reaiman Sum. Confused | :confused:

Re: C++ to calculate the Reaiman Sum

Mark Salsbery12-Oct-07 8:03

12-Oct-07 8:03

Using managed C++?

If not, please post your question on the Visual C++/MFC[^] board.

Have this info? Riemann Sum[^]

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Windows service

zafax_12-Oct-07 0:05

zafax_

12-Oct-07 0:05

hi, guys.

im developing a software for my personal use in C++.
i want program to start as windows service, when windows starts it should start too.
- i need create a key (string) in registry.
- i need to make it firewall enable.

HKLM/Software/Microsoft/Windows/Current Version/run/myprogram.exe

can you provide me a peace of code so i can construct my program.

anyone who help me thanks so much.

so much of happy ending...

Mark Salsbery12-Oct-07 5:34

12-Oct-07 5:34

Try searching this site for articles about services and accessing
the registry....I bet there's lots of them Smile | :)

Reference material:

Services[^]

Registry[^]

Since you've posted on the managed C++ board, I'll assume you're
using managed C++. In that case, there's an appwizard in visual studio
that will create a managed service application for you.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

zafax_12-Oct-07 5:47

zafax_

12-Oct-07 5:47

Thanks mark for helping. Smile | :)

i was hoping get a sample or code of what i have mentioned here.
yeah thats right there are lot of sites saying so.

thanks mark

so much of happy ending...

Mark Salsbery12-Oct-07 5:57

12-Oct-07 5:57

zafax4 wrote:
yeah thats right there are lot of sites saying so.

I'm not sure what you mean by that...

Anyway, type "windows service" into the search box at the top of this page.
When you get the list of hits, you can refine your search to just C++-related articles.

I just tried it....there was many articles on creating Windows Services there.
Most articles have source code you can download.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

zafax_12-Oct-07 6:12

zafax_

12-Oct-07 6:12

Thanks mark,

zafax4 wrote:
//yeah thats right there are lot of sites saying so.
it means there are lot of websites about win services and registry files concepts, im currently searching for them.

i hope you understand my words now.
i wonder what i am doing here Confused | :confused:

thanks.

so much of happy ending...