#VISUAL BASIC UTILITIES CODE#
NET-aware can continue to use the same COM server without moving any of the code to a.
Because the COM server is still registered with Windows, standard COM applications that are not.
#VISUAL BASIC UTILITIES INSTALL#
Because the COM code still resides in the COM server, you need to remember to install and register any COM servers you plan to use with your. Think of the assembly generated by tlbimp as a bridge that connects your. The assembly does not contain the COM server's code instead, it contains references that help the CLR find the COM objects housed in the server, such as the COM object's GUIDs. NET assembly that you can view with Ildasm.exe. The assembly that is output by the Tlbimp.exe tool is a standard. It can also accept the name of a COM server that holds an embedded type library:īy using the /out option, you can specify an alternate name for the. The tlbimp command can accept the name of a type library file as input: NET assembly with a DLL extension whose base name is set to the name of the library embedded in the type library file (which may be different from the filename of the type library itself). You should not use this option unless you are aware of the risks of exposing code as unsafe.ĭisplays additional information about the imported type library when tlbimp.exe is runĭisplays help about the syntax for tlbimp.exe Imports any COM-style SafeArray as a managed System.Array Class type Suppresses the display of success messagesĭoes not import a type library if the tool cannot resolve all references defined within the current assembly or assemblies specified with the /reference option Specifies the assembly file to use to resolve references to types defined outside of the current type library Specifies the file containing the public key to use to sign the resulting assembly Produces a primary Interop assembly for the type library By default, the output file has the same name as the COM DLL, but you are warned if you attempt to overwrite the file if it exists in the same path. Specifies the name of the output file to be created. Suppresses the Microsoft startup banner display Signs the assembly with a strong name using the public/private key pair found in the key container specified in the containername parameter Tells Tlbimp to sign the assembly using delayed signing Specifies the version of the assembly to create Tlbimp / The command-line options for tlbimp.exe are described in Table 34-1. The following code snippet demonstrates the syntax of Tlbimp: It is located in the Framework SDK directory in Program Files. NET Interop assembly based on the COM DLL that you specify. Then create the object within your program: Private Sub Button1_Click(.) Dim oFoo As New IDLexFooClass Dim parmStr As String = "I am a string parameter" Dim parmVal As Int32 = 24 Dim parmArr As Int32(,) = Try oFoo.CreateObject(argc, argval, argpal) Catch ex As Exception Debug.WriteLine(oFoo.GetLastError()) Return End Try ' use object here.The Tlbimp utility is a standalone console application that creates the.
Inside the Public Class definition for the form and before any subroutines, you must add the following two lines: Const PARMFLAG_CONST As Integer = &H1 Const PARMFLAG_CONV_MAJORITY As Integer = &H4000 Use the following code to initialize the object with its three parameters (a string, a 32-bit long value, and an array that has two rows and three columns, containing 32- bit long values). End Sub Initiation with Parameters in Visual Basic. Private Sub Button1_Click(.) Dim oFoo As New IDLexFooClass() Try oFoo.CreateObject( 0, 0, 0) Catch ex As Exception Debug.WriteLine(oFoo.GetLastError()) Return End Try ' use object here.
Use the following code to initialize the object with no parameters.
Within the project that will use the wrapper object, include the following line at the top of the form: Imports IDLexFooLib Initiation Without Parameters in Visual Basic. This imports the object reference into the project. Select the COM tab, then Browse, and change the path to the idlexfoo.dll.