Plugin plugin window attach issue

SunshineDreaming · June 30, 2026, 3:33pm

I finally got it working !

Unfortunately in the editorhost sample of the VST3 SDK in PlugProvider::setupPlugin() the handshake after connectComponents() is not present. With that handhsake the plugin now works!

Thanks to this post.

And I think in the setupPlugin() function in the SDK there’s a “return false;” missing when calling plugCtrlBase->initialize() fails:

github.com/steinbergmedia/vst3_public_sdk

source/vst/hosting/plugprovider.cpp

0c6df952a


      
          					// initialize the component with our context
          					FUnknownPtr<IPluginBase> plugCtrlBase (controller);
          					if (plugCtrlBase)
          					{
          						res = (plugCtrlBase->initialize (hostContext) == kResultOk);
          						if (res == false)
          						{
          							printError ([&] (std::ostream& stream) {
          								stream << "Failed to initialize controller of " << classInfo.name ()
          								       << "!\n";
          							});
          						}
          					}
          					else
          					{
          						printError ([&] (std::ostream& stream) {
          							stream << "Failed to get IPluginBase from controller of "
          							       << classInfo.name () << "!\n";
          						});
          						return false;
          					}