Managed C++/CLI

31-Jul-07 10:08

Hi,

I would create a table who every cas was : array < String ^, 2 > ^ tab=gcnew array < String ^, 2 > (20, 200);

i try for array < String ^, 3 > ^ tab=gcnew array < String ^, 3 > (20, 200);, i can't make : tab[1][2]= subItems when array<string^>^ subItems=gcnew array<string^>(16);

Thank you verry mutch

Mark Salsbery31-Jul-07 10:30

31-Jul-07 10:30

I don't understand what you're trying to do, but I see right away that you're trying to create a 3 dimension array
with only two arguments in the constructor.

What happened to our previous thread? I thought you needed an array of arrays...

Mark

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

abbd31-Jul-07 10:35

31-Jul-07 10:35

Hi,

they are always an exception, how i can add in table of arrays, i do : tab[i][j]=Subitem;

Thank you verry mutch

Mark Salsbery31-Jul-07 10:40

31-Jul-07 10:40

tab needs to be defined to hold the type that subitem is. You didn't show what subitem is in your first post.

Mark

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

abbd31-Jul-07 10:54

31-Jul-07 10:54

the definition of subItem was array^ subItems=gcnew array(16);,

Mark Salsbery31-Jul-07 11:35

31-Jul-07 11:35

That's not valid. Your arrays need to have a type.

What do you want to do?

Mark

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

Mark Salsbery31-Jul-07 11:49

31-Jul-07 11:49

abbd wrote:
array < String ^, 3 > ^ sub2=gcnew array < String ^, 3 > (20,100,200);

array^ subItems=gcnew array(16);

sub2[0,0] = subItems

You have a bunch of things wrong here. Do you have an understanding of C++ arrays?
They are strongly typed, like the whole language is.

To define an array you have to specify a type - this won't work:
array^ subItems=gcnew array(16);

Now to add this array type to your multi-dimension array, that multidimensioned array must be defined to hold an array type -
the type of subItems, which you haven't defined.

If you have an array with three dimensions then you must access members of the array using three arguments.

Mark

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

iddqd51531-Jul-07 11:05

iddqd515

31-Jul-07 11:05

you've created a rectangular multidimensional array rather than a jagged one. As such, you need to access elements like this tab[i,j] rather than tab[i][j] (which you would do for a jagged array in C++/CLI)

abbd31-Jul-07 11:44

31-Jul-07 11:44

i try for :

array < String ^, 3 > ^ sub2=gcnew array < String ^, 3 > (20,100,200);

array<string^>^ subItems=gcnew array<string^>(16);

subItems[0]="1";
subItems[1]="2";
.
.
subItems[15]="14";

sub2[0,0] = subItems

but they are an error : Error 80 error C3262: invalid array indexing: 1 dimension(s) specified for 3-dimensional 'cli::array<type,dimension> ^'

Thank's

Re: reading a file using C

George L. Jackson31-Jul-07 13:54

George L. Jackson

31-Jul-07 13:54

Are you trying to do something like this:

	array<array<String^>^, 3>^ sub2 = 
		gcnew array<array<String^>^,3>(10, 10, 10);
 
	array<String^>^ subitems = gcnew array<String^>(15);
 
	subitems[0] = "one";
	subitems[1] = "two";
 
	sub2[0, 0, 0] = subitems;
	 
	Console::WriteLine(sub2[0, 0, 0][0]);

"We make a living by what we get, we make a life by what we give." --Winston Churchill

reading a file using C

NalBH31-Jul-07 9:00

NalBH

31-Jul-07 9:00

Hello everybody,

I apologise if i am in the wrong forum.I am posting a question C

I want to read a file using c Coding and i want to store the data in an array like unsigned char data[] and i want then to calculate the data_length

can anyone please help me

thanks\

Nal

Mark Salsbery31-Jul-07 9:14

Re: reading a file using C

31-Jul-07 9:14

NalBH wrote:
I apologise if i am in the wrong forum.

Accepted. You should post here: Visual C++/MFC[^]

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

romcab31-Jul-07 20:49

romcab

31-Jul-07 20:49

Hello,

Maybe you can try this one:
FILE *fp; //file handler

//open the file
fp = fopen(filename, "r"); //check for mode "rb" if binary

//read the file and save to buffer
i = 0;
while (fget(buffer[i], SIZE-1, fp) != NULL)
i++;
fclose(fp); //close the file

I have'nt compile it but this is the algorithm and steps.

Hope this will help.

dfdf

Re: reading a file using C

NalBH2-Aug-07 3:22

NalBH

2-Aug-07 3:22

Hello
thanks for replying.But where is the array where the data file has been stored.Can i call fget(buffer[i], SIZE-1, fp ) again in my code.How can i call the data in the file.And is SIZE the size of the file.It has not been defined.i have this peace of code but it doesnt seems to work.
Please help

Thanks

Nal

An exception on listView

abbd30-Jul-07 21:19

Re: An exception on listView

30-Jul-07 21:19

Hi,

What does mean

- the easy way is have every Control be handled by the GUI thread, which
could mean, use a Forms.Timer, since that executes its Tick handler on the
GUI thread. The drawback is, if the Tick handler takes too long, your GUI
responsiveness will suffer

i have an exception when i use listview whith thread:

An unhandled exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll

Additional information: Cross-thread operation not valid: Control 'listView2' accessed from a thread other than the thread it was created on.

Please help me de resolve this great problem,

Thank you,

Luc Pattyn30-Jul-07 23:30

Luc Pattyn

30-Jul-07 23:30

abbd wrote:
the easy way is have every Control be handled by the GUI thread, which
could mean, use a Forms.Timer, since that executes its Tick handler on the
GUI thread. The drawback is, if the Tick handler takes too long, your GUI
responsiveness will suffer

That's quite correct.

And here is the explanation with the remedy:
http://www.codeproject.com/script/comments/forums.asp?msg=2155450&forumid=3785#xx2155450xx[^]

Did you read up on Control.InvokeRequired and Control.Invoke() by now ?

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Re: An exception on listView

abbd31-Jul-07 5:10

Re: An exception on listView

31-Jul-07 5:10

Hi,

InvokeRequired Gets a value indicating whether the caller must call an invoke method when making method calls to the control because the caller is on a different thread than the one the control was created on.

Form1 ^ob = (Form1^) obj;<br />
    if(ob->progressBar1->InvokeRequired)<br />
    {MessageBox::Show(I am in invoke );        <br />
        ProgressBarCallback ^d = gcnew ProgressBarCallback(ThreadTask);<br />
        ob->Invoke(d,gcnew array<System::Object^>{ob});                <br />
    }<br />
    else<br />
	{<br />
		MessageBox::Show(I am not in invoke );<br />
		        <br />
		ob->listView2->Items->Add("GooD");<br />
		<br />
        <br />
	}

He swow me always I am in invoke, thus he was in 1st thread, How i can add in listView??

Thank's

Luc Pattyn31-Jul-07 5:24

Luc Pattyn

31-Jul-07 5:24

Hi,

I can't give you a C++ example. You need to construct a method that checks
InvokeRequired; in the "then" part use Invoke to call that same method (itself)
again (so it runs again, but this time on the GUI thread), and in the "else"
part do what needs to be done.

There are plenty examples around, mine would all be in C#.

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

win32 shell api on mingw

ztoon30-Jul-07 13:23

ztoon

30-Jul-07 13:23

I am trying to port this tutorial to a wxwidget application, with mingw32. This class generates the default context menu on windows files from explorer.

I have converted some parts successfully, but it seems mingw's api doesn't know anything about IID_IContextMenu3 and IContextMenu3 ( undeclared references bacause shobjidl.h doesn't exist on mingw32 api ).

Could someone help me to fix this ? ( or give me another way to display such context menu )

thx

carlos

GINA

MozhdehQeraati29-Jul-07 0:34

MozhdehQeraati

29-Jul-07 0:34

To whom it may concern,
I want to develop a new GINA DLL and replace it with the Standard Microsoft GINA DLL. I want to use pki-based smart card for logon. I am familiar with GINA to some extent, but I want to know more. If there is any article available, please let me know. I'd appreciate it.
Regards,
Qeraati

Paul Conrad30-Jul-07 6:21

Paul Conrad

30-Jul-07 6:21

Have you looked around on MSDN?

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

led mike30-Jul-07 6:30

led mike

30-Jul-07 6:30

Good luck, it seems you will need it

http://www.google.com/search?hl=en&q=MSDN+GINA&btnG=Google+Search[^]

Christian Graus30-Jul-07 11:06

Christian Graus

30-Jul-07 11:06

Can you even write a GINA dll using .NET code ?

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 )