Delete Directory

Development Programming & Scripting
1

I’m currently trying to delete a directory, but somehow i can’t get it to work… am I doing something wrong here?

void UMyBPFunction::DeleteDirectory()
{
    IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();
	  FString Directory = FPlatformProcess::UserDir();
	  FString Folder = "\\Files\\";
	  FString CompletePath = Directory + Folder;

	  if (PlatformFile.DirectoryExists(*CompletePath))
	  {
	       PlatformFile.DeleteDirectory(*CompletePath);
	  } 
}
2

At first it wasn’t working. But after a few compilations and tries, it started to work just fine. (windows 10)

Are you using logs to check what is the CompletePath and whether not the condition is met?

3

So the code above worked for you right? I create a new directory almost the same way and it works fine but I just can’t delete the directory after I’m done with it. Could be that the directory is not empty and that’s why the code I provided doesn’t work? Should the directory be empty?

4

Yes, it must be empty.

I believe the DeleteDirectoy in FFileManagerGeneric (https://docs.unrealengine.com/en-US/API/Runtime/Core/HAL/FFileManagerGeneric/DeleteDirectory/index.html) let’s you specify whether or not to recursively delete a directory, but I never tested it.

5

So, I just tested and the DeleteDirectoy in FFileManagerGeneric allows you to recursively delete a directory of all its contents, so be careful:

	IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();
	
	FString Directory = FPlatformProcess::UserDir();
	FString Folder = "\\Files\\";
	FString CompletePath = Directory + Folder;

	if (PlatformFile.DirectoryExists(*CompletePath))
	{
		//PlatformFile.DeleteDirectory(*CompletePath);
		FFileManagerGeneric::Get().DeleteDirectory(*CompletePath, true, true);
	}
1 Like
6

yep, I tested the DeleteDirectory function on an empty folder and it just works fine and I figured it out that the directory is not empty and that was the reason it wasn’t working. Forgot to update this question. Thank you for your time!