Set Default Value for Slate Arguments
SLATE_BEGIN_ARGS
is a constructor, so you can set default values there.
SLATE_BEGIN_ARGS(SSH_TextureOutput)
: _NullTextureColour(FLinearColor(0.1f, 0.f, 0.f))
, _Title("OUTPUT TEXTURE")
{}
SLATE_ARGUMENT(FLinearColor, NullTextureColour)
SLATE_ARGUMENT(FString, Title)
SLATE_END_ARGS()
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