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about parameter

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  • Y Offline
    Y Offline
    yingkou
    wrote on last edited by
    #1

    I have built a interface as below: HRESULT GetBSTR1([out,retval]BSTR* bstrInfo); If VBScript call this component method the codes as below: Set aaa = CreateObject("ATLTest.TestOne") v1=aaa.GetBSTR1() MsgBox v1 OK and if I build my interface into HRESULT GetBSTR2([out]BSTR* bufName1,[out,retval]BSTR* bufName2); how the VBScript call this method

    T J 2 Replies Last reply
    0
    • Y yingkou

      I have built a interface as below: HRESULT GetBSTR1([out,retval]BSTR* bstrInfo); If VBScript call this component method the codes as below: Set aaa = CreateObject("ATLTest.TestOne") v1=aaa.GetBSTR1() MsgBox v1 OK and if I build my interface into HRESULT GetBSTR2([out]BSTR* bufName1,[out,retval]BSTR* bufName2); how the VBScript call this method

      T Offline
      T Offline
      ThatsAlok
      wrote on last edited by
      #2

      I Don't know about vbscript but in VB

      Dim a As New TESTCOM1Lib.TestInterface
      Dim str, str1 As String
      str = a.GetBSTR2(str1)
      MsgBox str1, vbOKOnly, str

      ----------------------------- "I Think this Will Help" ----------------------------- Alok Gupta visit me at http://www.thisisalok.tk

      Y 2 Replies Last reply
      0
      • T ThatsAlok

        I Don't know about vbscript but in VB

        Dim a As New TESTCOM1Lib.TestInterface
        Dim str, str1 As String
        str = a.GetBSTR2(str1)
        MsgBox str1, vbOKOnly, str

        ----------------------------- "I Think this Will Help" ----------------------------- Alok Gupta visit me at http://www.thisisalok.tk

        Y Offline
        Y Offline
        yingkou
        wrote on last edited by
        #3

        Sorry I haven't ever learned VB Private Sub Form_Load() Dim a As New ATLTESTLib.ITestTWO Dim str, str1 As String str = a.GetBSTR2(str1) MsgBox str1, vbOKOnly, str End Sub Compile Error and My COM Interface Is: interface ITestOne : IDispatch { [id(1), helpstring("method GetBSTR1")] HRESULT GetBSTR1([out,retval]BSTR* bstrInfo); [propget, id(2), helpstring("property property")] HRESULT property([out, retval] long *pVal); [propput, id(2), helpstring("property property")] HRESULT property([in] long newVal); }; [object,uuid(6FFD87E9-5733-4DF2-A33A-161D44FBC7D0),dual,helpstring("ITestTwo Interface"),pointer_default(unique)] interface ITestTwo : IUnknown { [id(1), helpstring("method GetBSTR2")] HRESULT GetBSTR2([out]BSTR* bufName1, [out,retval]BSTR* bufName2); }; [uuid(D8F2F3E6-3356-437B-849D-087CCD9439F0),version(1.0),helpstring("ATLTest 1.0 Type Library")] library ATLTESTLib { importlib("stdole32.tlb"); importlib("stdole2.tlb"); [ uuid(9072075F-656A-4B1C-9809-17A6164D1507), helpstring("TestOne Class") ] coclass TestOne { [default] interface ITestOne; }; };

        1 Reply Last reply
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        • T ThatsAlok

          I Don't know about vbscript but in VB

          Dim a As New TESTCOM1Lib.TestInterface
          Dim str, str1 As String
          str = a.GetBSTR2(str1)
          MsgBox str1, vbOKOnly, str

          ----------------------------- "I Think this Will Help" ----------------------------- Alok Gupta visit me at http://www.thisisalok.tk

          Y Offline
          Y Offline
          yingkou
          wrote on last edited by
          #4

          I haven't ever learned VB before,your codes are compiled and error happened

          T 1 Reply Last reply
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          • Y yingkou

            I haven't ever learned VB before,your codes are compiled and error happened

            T Offline
            T Offline
            ThatsAlok
            wrote on last edited by
            #5

            Wait i will send you code for both application send me mail at alok@efextra.com ----------------------------- "I Think this Will Help" ----------------------------- Alok Gupta visit me at http://www.thisisalok.tk

            1 Reply Last reply
            0
            • Y yingkou

              I have built a interface as below: HRESULT GetBSTR1([out,retval]BSTR* bstrInfo); If VBScript call this component method the codes as below: Set aaa = CreateObject("ATLTest.TestOne") v1=aaa.GetBSTR1() MsgBox v1 OK and if I build my interface into HRESULT GetBSTR2([out]BSTR* bufName1,[out,retval]BSTR* bufName2); how the VBScript call this method

              J Offline
              J Offline
              Jorgen Sigvardsson
              wrote on last edited by
              #6

              If I recall correctly, VBScript can't handle out-only parameters. -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. I blog too now[^]

              Y 1 Reply Last reply
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              • J Jorgen Sigvardsson

                If I recall correctly, VBScript can't handle out-only parameters. -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. I blog too now[^]

                Y Offline
                Y Offline
                yingkou
                wrote on last edited by
                #7

                thanks for your answer.Do you mean VBScript can onle receive [out retval] parameter

                J 1 Reply Last reply
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                • Y yingkou

                  thanks for your answer.Do you mean VBScript can onle receive [out retval] parameter

                  J Offline
                  J Offline
                  Jorgen Sigvardsson
                  wrote on last edited by
                  #8

                  It turns out that VBScript can do [out] parameters, but only if the type of the parameter is VARIANT, as this article[^] explains. -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. I blog too now[^]

                  Y 1 Reply Last reply
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                  • J Jorgen Sigvardsson

                    It turns out that VBScript can do [out] parameters, but only if the type of the parameter is VARIANT, as this article[^] explains. -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. I blog too now[^]

                    Y Offline
                    Y Offline
                    yingkou
                    wrote on last edited by
                    #9

                    thanks a lot

                    Y 1 Reply Last reply
                    0
                    • Y yingkou

                      thanks a lot

                      Y Offline
                      Y Offline
                      yingkou
                      wrote on last edited by
                      #10

                      could I say that if I build a compnent used by VBScript and other script language,the parameter should be dedined VARIANT

                      J 1 Reply Last reply
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                      • Y yingkou

                        could I say that if I build a compnent used by VBScript and other script language,the parameter should be dedined VARIANT

                        J Offline
                        J Offline
                        Jorgen Sigvardsson
                        wrote on last edited by
                        #11

                        For out-parameters, that is a good strategy I'd say, as script languages are often weakly typed. -- Weiter, weiter, ins verderben. Wir müssen leben bis wir sterben. I blog too now[^]

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