Hi All, I have a function in C++ dll like

FunctionCPP(int s)
{
}

I have a function in C# application(exe) like

int FunctionCSharp(int s)
{
return s;
}

what is the procedure to call FunctionCSharp from FunctionCPP? Any help will be appriciated. Thanks

G.Paulraj

Richard and Superman, Thanks for your reply. Actaully i supposed to return std::string. The thing is, this is a dll. and i am calling this dll from c# application. If i return like

return "some value";

this is working fine. but if i return like,

char* str; or std::string str;

return str;

the output is not coming correctly. from c# i am calling like

String str = somefunctionname();

How can solve this issue?

G.Paulraj

Hi All, How to reyurn char* in c++? My code is

extern "C" char* callFunction()
{
std::string stroutput = pObject->ProcessNumber("hi","hi");
char* strout = new char [stroutput.size()+1];
strcpy (strout, stroutput.c_str());
return strout;
delete[] strout;

}

Thanks in advance...

G.Paulraj

Hi... thanks for ur quick reply. in .h file i have declared like

__declspec(dllexport) char* BaseClassFunction();

in .CPP file the definition is like

extern "C" __declspec(dllexport) char* __stdcall ISim::BaseClassFunction()
{
static char* pszCPUType = "derived class function called";
return pszCPUType;
}

from c# i am calling like following...

const String _dllLocation1 = @"D:\Project\Dll.dll";
[DllImport(_dllLocation1)]
static extern String BaseClassFunction();

String Baseclass = BaseClassFunction();
MessageBox.Show(Baseclass.ToString());

the above code is not working... any help will be appricated..

G.Paulraj

Hi All, I am calling a c++ dll from C# application. with out name mangling how can i call c++ function and class from c# application? Thanks in advance.

G.Paulraj

Hi All, I am calling a c++ dll from c#. it throwing error like "An unhandled exception of type 'System.AccessViolationException' occurred in exe Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt."

[DllImport(@"D:\Project\Working\Toolkit-2.0\output\Win32\Debug\ipetk.dll",
EntryPoint = "?GetModuleTypeString@ModuleIndex@Infrastructure@IPETK@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@XZ",
CallingConvention = CallingConvention.Cdecl)]
static extern string GetModuleTypeString(ModuleType ths);

string ModuleIndex = GetModuleTypeString(ModuleType.IPD);
MessageBox.Show(ModuleIndex.ToString());

how can i resolve this issue..? any help will be appriciated. Thanks

G.Paulraj

Thanks Cédric Moonen. dc.FloodFill(1,1,RGB(255,255,255)); i have called like above. but full screen color has been changed. how to change the color of that particular polydraw area. thanks...

G.Paulraj

Hi... I am using visual studio 2008. The syntax for FloodFill is FloodFill(HTC htc, int x, int y, COLERREF color); if i use like FloodFill(10,100,RGB(255,255,255));, there will be a syntax error like FlootFill does not take 3 arguments.

G.Paulraj

Thanks super man. FloodFill and ExtFloodFill asks HTC. how can get that variable from my code.

G.Paulraj

Hi... I have created a polydraw.

CPaintDC dc (this);

CRect rect;
GetClientRect (&rect);
CPen pen (PS\_SOLID, 0, RGB (0, 0, 255));
CPen\* pOldPen = dc.SelectObject (&pen);
POINT aPoint3\[7\] = { 10, 10, 100, 150, 150, 150, 10, 100, 500,150,150, 100, 10, 10 };
BYTE types\[7\] = {PT\_MOVETO, PT\_LINETO, PT\_LINETO, PT\_BEZIERTO,PT\_BEZIERTO, PT\_BEZIERTO, PT\_LINETO};
dc.PolyDraw(aPoint3,types,7);
dc.SelectObject (pOldPen);

Now i want to fill this polydraw. How can do that? Any help will be appriciated... Thanks...

G.Paulraj

Hi Everybody, Now i am creating N-Number of text boxes in a window. But the window showing particular no of textbox. after that the window does not scroll. Now i need to scroll the window if the textbox is high numbers. Any help will be appriciated. Thanks.

G.Paulraj

Hi Everybody, How to find a text file is already opened or not? I have used the following code. but it is not working correctly.

ifstream inFile;
inFile.open("C:\\test.txt");
if (!inFile)
{
AfxMessageBox("file is opened");
}
else
{
AfxMessageBox("file not opened");
}

can anyone help me to how to find a file opened or not? Thanks....

G.Paulraj

Hi Arun Jacob, Its working in Internet Explorere. but not working in other browser(Opera).

G.Paulraj

Hi Everyone, My menu is looking like following,

<a class="menu"; href="page1.aspx"; title="Page1">   Page1    </a>
<a class="menu"; href="page2.aspx"; title="page2">   page2    </a>
<a class="menu"; href="page3.aspx"; title="page3">   page3    </a>

Now i want to disable page3 menu. how to do it... any help will be appriciated... thanks...

G.Paulraj

Hi... i have to check the whether the user get logged in or not all pages... how do i use Default.aspx page output in all pages? any help will be appriciated. Thanks...

G.Paulraj

Hi... Thanks for your reply. I am using c#. so can you please send the code snipt in c#? thanks...

G.Paulraj

Hi... I am using asp with c#. I am doing an application for upload image files via ftp. how to i do this? Any help will be appriciated... thanks...

G.Paulraj

Yes... Its working.... But i need to give links to each login name. for ex, paul - www.paul.com raj - www.raj.com rakesh - www.rakesh.com Thats why i am asking to print in DIV. Thanks...

G.Paulraj

yes... That is one method. But here i don't know how much rows are there. So i have to include many labels... thats why i am asking to print with out labels...

G.Paulraj

Hi... I have two DIV controls in my main.aspx page. 1st DIV's ID is COMPONENT and another one is COLOR. in main.aspx.cs, I have code to retrieve some datas from database.

foreach (DataRow drRow in dtResult.Rows)
{

            Loginname = drRow\["name"\].ToString();
            password = drRow\["password"\].ToString();
           
            Response.Write(Loginname  + "-" + password);
         }

It is printing the values in mian window.but i want to print the value of Loginname & password into the DIV - COMPONENT. How to do this... Any help will be appriciated... Thanks...

G.Paulraj