I'm writing a DirectX display class that includes texture loading functions. Unmanaged C++, VS 2008, D3D 9. In the past tracking textures and VRAM leaks have been an issue, so I'd like to code an allocation tracker which can report leaks in VRAM. As I understand it, this is done with 'new' in C++ via the __FILE__ and __LINE__ macros, as in something like: #define new new(__FILE__, __LINE) which causes an overload of 'new' to track the file and line of the allocation so it can report a memory leak. I think 'delete' does a similar thing. However in my case I have a member function, like: DisplayClass.CreateRenderTargetTexture(128,128); to create a 128x128 texture. How can I conveniently put in the __FILE__ and __LINE__ macros just for debug builds in this function so I can track where VRAM is being allocated? Is there any more elegant way than something like this?: #define CreateRenderTargetTexture(w, h) CreateRenderTargetTexture(w, h, __FILE__, __LINE__) I have a couple of other functions that need this tracking and this way just seems ugly. Any thoughts?