Managed C++/CLI

24-May-07 11:19

hi agein to all

array<String^>^row0 = {"11/22/1968","29"};<br />
      DataGridView1->Rows->Add( row0 );<br />
      row0[0]="2";<br />
      Object^ a= DataGridView1->DataSource;<br />
      a[0]="123";

error C3915: 'System::Object' has no default indexed property (class indexer)

how do i acces the rows after they are created / aplyed i havent try it but i am prety sure i coud overwrite it
like DataGridView1->Rows->Add( somethingelse ); mayby not whit add :p
it woud just append / push it in this case
any way the question is how can i acces it streigt to replace data something like

DataSource[row][col]= "my new value";

i not wana use databinding to a data base as the data are live generated and i dont think it woud make thinks easyer any way Wink | ;)

on top if this is there any way to list the content and types whats in an object
some recursive loop wich woud rotate truh all elements of the object by it an array a mullti dim array or what ever object combination

Re: datagridview data

teejayem24-May-07 12:59

teejayem

24-May-07 12:59

If i'm following you right i think you wanna do something like this

DataGridView^ dgv = gcnew DataGridView();

//---Add rows to the DataGridView


//this
dgv->Rows[0]->Cells[0]->Value = "new date";
dgv->Rows[0]->Cells[1]->Value = "new number";

//or this
dgv[0, 0]->Value = "new date";
dgv[0, 1]->Value = "new number";

Don't be overcome by evil, but overcome evil with good

Re: datagridview data

Xeef24-May-07 13:19

conver size_t to System::String

24-May-07 13:19

thx a lot !

exctly what i need

Xeef23-May-07 8:40

23-May-07 8:40

hi all
new here and also to c++

MeM mem=MeM()<br />
textBoxeS[0] = gcnew System::Windows::Forms::TextBox;<br />
textBoxeS[0]->Size = System::Drawing::Size( 300, 40 );     <br />
textBoxeS[0]->ReadOnly = true;      <br />
//textBoxeS[0]->Text = gcnew String(mem.X()); ????????????	  <br />
textBoxeS[0]->BackColor = SystemColors::Window;<br />
<br />
<br />
MeM::MeM(void)<br />
{	<br />
	GlobalMemoryStatus (&stat);<br />
}<br />
System::String^ MeM::X(){	<br />
		<br />
how do i cast / convert this ---->>>><br />
<br />
char *a=(char*)stat.dwTotalPhys;<br />
return gcnew String(a);  //System.ArgumentOutOfRangeExceptio <br />
<br />
//return  const_cast<System::String^>(stat.dwTotalPhys);<br />
<<<<---------- PROBLEM HERE<br />
<br />
}

other question
is there an AUTOindent function in visual C++ 2005 ?

cheers rick

led mike23-May-07 8:48

led mike

23-May-07 8:48

Xeef wrote:
char *a=(char*)stat.dwTotalPhys;

You can't just cast a numeric to a character and then use it in string library functions because they need a null terminator. There are several C/C++/STL implementations like ltoa() and sprintf() etc. that you should research

led mike

Xeef23-May-07 9:07

23-May-07 9:07

cool !

thx a lot !

working so fare Big Grin | :-D

System::String^ MeM::X(){
char a[200];
sprintf_s( a,200, "%d", stat.dwTotalPhys );
return gcnew System::String(a);
}

Mark Salsbery23-May-07 9:02

23-May-07 9:02

Check out Object.ToString(). It is overridden for pretty much all base types.

System::String^ MeM::X()
{ 
   return stat.dwTotalPhys.ToString();
}

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Xeef23-May-07 9:11

23-May-07 9:11

wow so much help in so short time

thank you too

led mike23-May-07 9:13

led mike

23-May-07 9:13

Mark Salsbery wrote:
stat.dwTotalPhys.ToString();

led mike

Mark Salsbery23-May-07 9:19

23-May-07 9:19

Heh now what did I do?

The OP wanted a string representation of a DWORD right?

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

led mike23-May-07 9:35

led mike

23-May-07 9:35

You can call ToString on a DWORD? Let me see... Well I'll be a Fish Filet eatin goober! Laugh | :laugh:

led mike

Mark Salsbery23-May-07 9:40

MDI application help - multiple Cview style

23-May-07 9:40

Filet-o-Fish is on me! Yes, you can. Built in types automagically convert back and forth
from managed types.

You had me worried - I had to check on VS 2005 real quick (I'm still on 2003 .NET) to see if it
didn't work anymore. That would have sucked Smile | :)

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

earlgraham23-May-07 5:28

earlgraham

23-May-07 5:28

I'm trying to replace a MFC CView with a form. The Cview in a Container that several Controls is inserted into. That way events are controlled with a common response, however control is same for each, but the control functions can be different. It will be part of a MDI Application.

I’m looking for a book or website. I would like to create a nice application to for all these "views". Several can be open at once.

PS: I’m new to using forms. My past GUIs where written in MFC.

Thanks

Programmer
Glenn Earl Graham
Austin, TX

Rootnamespace in VS2005

hansipet23-May-07 3:22

hansipet

23-May-07 3:22

Hello,

I have a strange problem. If I have an RootNamespace for a project
e.g Microsoft::Bug
and I make a new Form then I receive an error from ResGen (Invalid file Microsoft::Bug.Form1.resources)
How I can make this namespace in the way that also the resources works automatically?
Okay I can change the output file for every resource but I don't think that this is a good way!

Best regards
Hansjörg

Pointer

dodoxor22-May-07 8:54

dodoxor

22-May-07 8:54

Hi, i've a problem with a method that had to return a pointer.
In this class, i've implemented a method tha return a pointer.
class Camobj
{

public:
Camobj();
~Camobj(void);
IplImage* capture(void){
//create a IplImage* img;
return(img);
}
};
private:
....

};

In another class(window form) form1.h, i want to visualize my IplImage returned from capture method of Camobj:

#include "camobj.h"
....
public ref class Form1 : public System::Windows::Forms::Form
{
...
protected:
//Create a Camobj object
Camobj *mycam;

public:
Form1(void)
{
InitializeComponent();
mycam=new Camobj();
}
....
private: System::Void capimgbut_Click(System::Object^ sender, System::EventArgs^ e) {

IplImage* kon=mycam->capture(); //it would return a IplImage*

cvShowImage("try",kon);//cvShowImage(const char *name ,const Iplimage *image)

}
....
The problem is that it seems to not receive anything? is it possible?
Thanks, regards.

Create video on an OpenGL window by reading memory buffers containing image frames

DoctorDoctor22-May-07 7:54

DoctorDoctor

22-May-07 7:54

Hi to all of you,

I am a new programmer on OpenGL.
I am currently working on an application where I have a Debian Linux PC with two usb industrial cameras,acquiring images at a rate of 25fps. Each image data is sent by sockets to a windows PC. The format of the received buffer at the windows PC side is buffer[0]='top left image pixel', buffer[640*480]='bottom right image pixel'. I want know to proccess these buffers an display a video on an OpenGL window at a similar frame rate, or even lower,i.e. even 5-10 frames per second will do for me.

Can anynone advised me with an appropriate approach?

Cheers,

DoctorDoctor

Verifying if one bit is set in a word value.

paper6722-May-07 6:16

paper67

22-May-07 6:16

Hi,

Does anybody now a macro to check if only one bit is set in a word value ?

Thx

About help

sarah_malik22-May-07 6:09

sarah_malik

22-May-07 6:09

Hi,
I have a menu on my application that contains a HELP toolstrip, I've finished doing the help project using the HTML workshop. Now how can I link this toolstrip to the Help.chm file?

thanks in advance,

Re: About help

Mark Salsbery22-May-07 7:42