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abghosh
abghosh
Last Activity: Mar 8 '10, 05:29 AM
Joined: Feb 20 '10
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  • abghosh
    replied to Passing argument ito dll call in vb .net
    in Visual Basic .NET
    Thanks for your suggesstion.
    In my last reply what I want to convey is that:

    Case 1:
    # Dll function takes string as an argument and returns string as the result.
    In this case if I call the function like:

    Code:
    <DllImport("G:\test\debug\test.dll", _ 
        SetLastError:=True, CharSet:=CharSet.Ansi, _ 
        ExactSpelling:=True, _ 
        CallingConvention:=CallingConvention.Cdecl)>
    ...
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    • abghosh
      replied to Passing argument ito dll call in vb .net
      in Visual Basic .NET
      Hi
      Actually whatever argument I am passing its not working. E.g. suppose I am passing an integer argument (say 8) but a constant integer 1 is being passed every time.

      So I require help on passing argument to this.
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      • abghosh
        replied to Passing argument ito dll call in vb .net
        in Visual Basic .NET
        Nope it didn't work either. Let me give my code here:
        VB code for calling the dll function
        Code:
        Private Sub getData(ByVal rowIndex As Integer)
        Dim Message As String = "Sumana"
        Dim temp As New StringBuilder
        temp.Append(New String(Message))
        Dim res As New StringBuilder
        res = _ZN11QtEngineDll7randIntEPKc(temp)
        Dim x() As Char = res.ToString
        ...
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        • abghosh
          replied to Passing argument ito dll call in vb .net
          in Visual Basic .NET
          Hi NoItAll

          You are right. Not all codes are in vb. As I have mentioned the dll is created using qt4 and the dll call is made using vb.net.

          Can you pls explain a bit more on your comments. Even in place of stringbuilder i pass String argument then also it is not working.


          Any way thanks for ur reply.
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          • abghosh
            started a topic Passing argument ito dll call in vb .net
            in Visual Basic .NET

            Passing argument ito dll call in vb .net

            In my vb.net code I want to call a dll file created by Qt4.
            Now everything works fine untill and unless I pass some string argument to the function.

            Here is the function in dll file:
            Code:
            const char* QtEngineDll::randInt(char url[])
{
    QString result;
    /*QTextCodec *codec = QTextCodec::codecForName("UTF-8");
    QByteArray d = codec->fromUnicode(url);
    result=
            ...
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            • abghosh
              started a topic Read live stock quoted from a website using qt4 c++?
              in C

              Read live stock quoted from a website using qt4 c++?

              Hi
              i want to read data from a csv file that is located on the internet, e.g.
              http://download.financ e.yahoo.com/d/quotes.csv?s=DL F.NS&f=sl1d1t1c 1ohgv&e=.csv and read it as usually.

              I can read a csv file located in my local computer.

              I am a newbee in this field.
              Thanks in advance.
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              • abghosh
                replied to Not getting requierd output in C
                in C
                Run this loop:
                For(i = 1; i <= Limit; i++)
                for(j = 0; j < i; j++)
                printf("%d", (i - j) % 2);
                printf("\n");
                }

                Hope this help.
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