Before starting to make my own Winamp plugins, I tried compiling an existing plugin DLL from source-code in my current setup, thus testing if my setup was working. I used the Beginner Basic Plugin Guide as a starting point for my solution in Visual Studio 2012. That seemed to work.
I then compiled the resteless_dsp plugin, for which I found the source here: http://www.hartwork.org/doku.php?id=restless_winamp_plugin. This became problematic.
First the plugin compiled without error:
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1>------ Build started: Project: dsp_myrestless, Configuration: Release Win32 ------ 1> Stdafx.cpp 1> AssemblyInfo.cpp 1> dsp_myrestless.cpp 1> Generating Code... 1> Creating library I:\#C++\dsp_myrestless\Release\dsp_myrestless.lib and object I:\#C++\dsp_myrestless\Release\dsp_myrestless.exp 1> dsp_myrestless.vcxproj -> I:\#C++\dsp_myrestless\Release\dsp_myrestless.dll ========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ========== |
When I ran the plugin locally, it worked fine. But when I tried to run it on another system (a clean windows 7 virtual machine) I got strange results. The plugin would load (show-up in the list of plugins), but the title was replaced by random non ASCII characters. The file name looked ok though. Like this:
And when I tried to run the configuration it told me ” Error loading module “.
The problem boiled down to a wrong configuration (again) of Visual Studio. I was using Common Language support… Resolving this would imply installing extra software a the target PC and I didn’t want that. So I decided to go without CLR.
I changed the config like this:
1) Project->Properties->General->Common Language Runtime Support-> “No Common Language support”
2) Project->Properties->C/C++->Code Generation->Runtime Library-> “Multi-threaded (/MT)”
Now when I build I got a lot of errors:
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1>------ Build started: Project: dsp_myrestless, Configuration: Release Win32 ------ 1> Stdafx.cpp 1> AssemblyInfo.cpp 1>AssemblyInfo.cpp(3): error C2871: 'System' : a namespace with this name does not exist 1>AssemblyInfo.cpp(4): error C2653: 'System' : is not a class or namespace name 1>AssemblyInfo.cpp(4): error C2871: 'Reflection' : a namespace with this name does not exist 1>AssemblyInfo.cpp(5): error C2653: 'System' : is not a class or namespace name 1>AssemblyInfo.cpp(5): error C2871: 'CompilerServices' : a namespace with this name does not exist 1>AssemblyInfo.cpp(6): error C2653: 'System' : is not a class or namespace name 1>AssemblyInfo.cpp(6): error C2871: 'InteropServices' : a namespace with this name does not exist 1>AssemblyInfo.cpp(7): error C2653: 'System' : is not a class or namespace name 1>AssemblyInfo.cpp(7): error C2871: 'Permissions' : a namespace with this name does not exist 1>AssemblyInfo.cpp(14): error C2337: 'AssemblyTitleAttribute' : attribute not found 1>AssemblyInfo.cpp(15): error C2337: 'AssemblyDescriptionAttribute' : attribute not found 1>AssemblyInfo.cpp(16): error C2337: 'AssemblyConfigurationAttribute' : attribute not found 1>AssemblyInfo.cpp(17): error C2337: 'AssemblyCompanyAttribute' : attribute not found 1>AssemblyInfo.cpp(18): error C2337: 'AssemblyProductAttribute' : attribute not found 1>AssemblyInfo.cpp(19): error C2337: 'AssemblyCopyrightAttribute' : attribute not found 1>AssemblyInfo.cpp(20): error C2337: 'AssemblyTrademarkAttribute' : attribute not found 1>AssemblyInfo.cpp(21): error C2337: 'AssemblyCultureAttribute' : attribute not found 1>AssemblyInfo.cpp(34): error C2337: 'AssemblyVersionAttribute' : attribute not found 1>AssemblyInfo.cpp(36): error C2337: 'ComVisible' : attribute not found 1>AssemblyInfo.cpp(38): error C2337: 'CLSCompliantAttribute' : attribute not found 1>AssemblyInfo.cpp(40): error C2337: 'SecurityPermission' : attribute not found 1>AssemblyInfo.cpp(40): error C2653: 'SecurityAction' : is not a class or namespace name 1>AssemblyInfo.cpp(40): error C2065: 'RequestMinimum' : undeclared identifier 1> missing quotes ("") around 'RequestMinimum'? 1> dsp_myrestless.cpp 1> Generating Code... ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== |
I eliminated those by commenting out everything in the AssemblyInfo.cpp that raised an error. (leave #include “stdafx.h” un-commented)
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#include "stdafx.h" //using namespace System; //using namespace System::Reflection; //using namespace System::Runtime::CompilerServices; //using namespace System::Runtime::InteropServices; //using namespace System::Security::Permissions; // // General Information about an assembly is controlled through the following // set of attributes. Change these attribute values to modify the information // associated with an assembly. // //[assembly:AssemblyTitleAttribute("dsp_myrestless")]; //[assembly:AssemblyDescriptionAttribute("")]; //[assembly:AssemblyConfigurationAttribute("")]; //[assembly:AssemblyCompanyAttribute("Microsoft")]; //[assembly:AssemblyProductAttribute("dsp_myrestless")]; //[assembly:AssemblyCopyrightAttribute("Copyright (c) Microsoft 2013")]; //[assembly:AssemblyTrademarkAttribute("")]; //[assembly:AssemblyCultureAttribute("")]; // // Version information for an assembly consists of the following four values: // // Major Version // Minor Version // Build Number // Revision // // You can specify all the value or you can default the Revision and Build Numbers // by using the '*' as shown below: //[assembly:AssemblyVersionAttribute("1.0.*")]; // //[assembly:ComVisible(false)]; // //[assembly:CLSCompliantAttribute(true)]; // //[assembly:SecurityPermission(SecurityAction::RequestMinimum, UnmanagedCode = true)]; |
That eventually did the trick. The code compiles ok and it works fine on other windows systems.
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1>------ Build started: Project: dsp_myrestless, Configuration: Release Win32 ------ 1> AssemblyInfo.cpp 1> Creating library I:\#C++\dsp_myrestless\Release\dsp_myrestless.lib and object I:\#C++\dsp_myrestless\Release\dsp_myrestless.exp 1> dsp_myrestless.vcxproj -> I:\#C++\dsp_myrestless\Release\dsp_myrestless.dll ========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ========== |
I hope this will help someone out there.
Note that when you merely overwrite the dll with a newer version, the ” Error loading module ” error won’t go away. Use the “uninstall plug-in” button (right of the configure button) first to remove old versions of the plugin before adding the new version. Failing to do so will complicate debugging.
