Incomplete type and pointer to incomplete type are not allowed

Development Programming & Scripting C++
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1

Have you included:

  • GenericPlatform/GenericPlatformFile.h

You might also want:

  • HAL/PlatformFilemanager.h
  • Misc/FileHelper.h

depending on what you’re doing.

2

Does anyone know why am I getting these errors when adding PlatformFile and IFileHandle into my code. (PlatformFile) gives me “Incomplete type is not allowed” and (IFileHandle) gives me “Pointer to incomplete type is not allowed”. I get these error on these lines.

FileHandle->Write(Response->GetContent().GetData(), Response->GetContentLength());

if (!PlatformFile.DirectoryExists(*Path))

void UDownloader::OnReady(FHttpRequestPtr Request, FHttpResponsePtr Response, bool bWasSuccessful)
    {
    	RemoveFromRoot();
    	Request->OnProcessRequestComplete().Unbind();
    	FString FileSavePath = "E:\\AssetFolder\\" + AssetID;
    
    	if (Response.IsValid() && EHttpResponseCodes::IsOk(Response->GetResponseCode()))
    	{
    		// SAVE FILE
    		IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();
    
    		// create save directory if not existent
    		FString Path, Filename, Extension;
    		FPaths::Split(FileSavePath, Path, Filename, Extension);
    		if (!PlatformFile.DirectoryExists(*Path))
    		{
    			if (!PlatformFile.CreateDirectoryTree(*Path))
    			{
    				return;
    			}
    		}
    
    		// open/create the file
    		IFileHandle* FileHandle = PlatformFile.OpenWrite(*FileSavePath);
    		if (FileHandle)
    		{
    			// write the file
    			FileHandle->Write(Response->GetContent().GetData(), Response->GetContentLength());
    
    			// Close the file
    			delete FileHandle;
    		}
    		else
    		{
    		}
    	}
    		
    }
3

Thank you! I actually got it to work after finding the answer on UE4 API http://api.unrealengine.com/INT/API/Runtime/Core/GenericPlatform/IFileHandle/index.html