如何在UE4里面打开一个Windows窗口

案例：

FailureMessage = FText::Format( LOCTEXT("PrimaryGameModuleCouldntBeLoaded", "The game module '{0}' could not be loaded. There may be an operating system error or the module may not be properly set up."), TextModuleName );

调用单例：

FMessageDialog::Open(EAppMsgType::Ok, FailureMessage);

效果：

参考：

UE4 ProjectManager.cpp       /94/