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JavaCallsCOM Sample (Upgrading Visual J++ 6.0 Java-Language/COM Components) 

Visual Studio 2005

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This sample demonstrates upgrading Visual J++ 6.0 Java-language/COM applications to Visual J#. The sample has three directories under the Clients subdirectory. The client in the SimpleClient directory shows upgrading of a simple client that accesses a COM DLL. Even the JActiveX® generated wrappers are upgraded. The InterfaceMarshaling and MessagePump samples explain specific workarounds to threading related issues that developers may face when upgrading their applications to Visual J#.

For detailed information on upgrading Visual J++ 6.0 Java-language/COM applications to Visual J# please refer to Upgrading Visual J++ 6.0 Applications That Access COM Components.

Security noteSecurity Note

This sample code is provided to illustrate a concept and should not be used in applications or Web sites, as it may not illustrate the safest coding practices. Microsoft assumes no liability for incidental or consequential damages should the sample code be used for purposes other than as intended.

Building and Running the Sample

To open the sample file in Solution Explorer

  1. Click Download Sample.

    The File Download message box appears.

  2. Click Open, and on the left column of the zip folder window, click Extract all files.

    The Extraction Wizard opens.

  3. Click Next. You can change the directory that the files will be extracted to, and then click Next again.

    Make sure that the Show extracted files check box is selected, and click Finish.

  4. Double-click the sample's .sln file.

    The sample solution is displayed in Solution Explorer. You might get a security warning that says the solution location is not trusted. Click OK to continue.

To build this sample in the development environment

  1. On the Build menu, click Build Solution, or press CTRL+SHIFT+B.

    -or-

    From the command line, type BUILD.bat.

    NoteNote

    For more information, see Building from the Command Line (Visual J#).

  2. Open the appropriate project file (SimpleClient.vjsproj, InterfaceMarshaling.vjsproj, or MessagePump.vjsproj) in the development environment and build it.

To build this sample from the command line

  • Type BUILDALL.bat from the sample root directory.

    A COM DLL is in included in the sample. In case you do not want to rebuild the COM server, you need to register the existing DLL by typing regsvr32 COMServer.dll to be able to use it. If you rebuild the COM server, no explicit registration is required as the build process does this.

To run this sample

  • From the development environment, press F5 to build and run the sample.

    -or-

    From the command line, type Client.exe from the relevant client directory.

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