[SOLVED] unresolved external symbol (LNK Error)

[jubet]

Help please I'm trying to fix this for 2 days now.

error LNK2001: unresolved external symbol "public: static char const * const DxTexEffVisualMaterial::NAME" (?NAME@DxTexEffVisualMaterial@@2QBDB)

error LNK2001: unresolved external symbol "public: static unsigned long const DxTexEffVisualMaterial::TYPEID" (?TYPEID@DxTexEffVisualMaterial@@2KB)

error LNK2019: unresolved external symbol "public: __thiscall DxTexEffVisualMaterial::DxTexEffVisualMaterial(void)" (??0DxTexEffVisualMaterial@@QAE@XZ) referenced in function "public: class DxTexEffBase * __thiscall DxTexEffMan::CreateEffInstance(unsigned long)" (?CreateEffInstance@DxTexEffMan@@QAEPAVDxTexEffBase@@K@Z)

error LNK2019: unresolved external symbol "public: static void __cdecl DxTexEffVisualMaterial::OnCreateDevice(struct IDirect3DDevice9 *)" (?OnCreateDevice@DxTexEffVisualMaterial@@SAXPAUIDirect3DDevice9@@@Z) referenced in function "public: void __thiscall DxTexEffMan::OnCreateDevice(struct IDirect3DDevice9 *)" (?OnCreateDevice@DxTexEffMan@@QAEXPAUIDirect3DDevice9@@@Z)

error LNK2019: unresolved external symbol "public: static void __cdecl DxTexEffVisualMaterial::OnReleaseDevice(struct IDirect3DDevice9 *)" (?OnReleaseDevice@DxTexEffVisualMaterial@@SAXPAUIDirect3DDevice9@@@Z) referenced in function "public: void __thiscall DxTexEffMan::OnReleaseDevice(struct IDirect3DDevice9 *)" (?OnReleaseDevice@DxTexEffMan@@QAEXPAUIDirect3DDevice9@@@Z)

This is solved, I just forgot to include DxTexEffVisualMaterial.cpp and DxTexEffVisualMaterial.h in my project