Hey, i just started playing with stuff and installed Dev-C++ application for compiling C++. I also installed Direct3D SDK stuff. Now i downloaded and tried compiling tutorial from website: http://www.riaz.de/tutorials/d3d.html#tut02 I downloaded the last one "Tutorial 17: Point Sprites". I then open Dev-C++ application and tried compiling main.cpp and it gives me an error: Compiler: Default compiler Executing g++.exe... g++.exe "D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp" -o "D:\game dev\direct3d tutorials\d3d17\d3d17\main.exe" -I"C:\Dev-Cpp\lib\gcc\mingw32\3.4.2\include" -I"C:\Dev-Cpp\include\c++\3.4.2\backward" -I"C:\Dev-Cpp\include\c++\3.4.2\mingw32" -I"C:\Dev-Cpp\include\c++\3.4.2" -I"C:\Dev-Cpp\include" -L"C:\Dev-Cpp\lib" In file included from D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:6: D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:13:18: d3dx9.h: No such file or directory In file included from D:\game dev\direct3d tutorials\d3d17\d3d17\/capplication.h:9, from D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:16, from D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:6: D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:37:7: warning: no newline at end of file In file included from D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:16, from D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:6: D:\game dev\direct3d tutorials\d3d17\d3d17\/capplication.h:73: error: `D3DXMATRIX' does not name a type In file included from D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:16, from D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:6: D:\game dev\direct3d tutorials\d3d17\d3d17\/capplication.h:80:7: warning: no newline at end of file In file included from D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:17, from D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:6: D:\game dev\direct3d tutorials\d3d17\d3d17\/d3ddefs.h:24:7: warning: no newline at end of file In file included from D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:6: D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:35: error: `D3DXVECTOR3' was not declared in this scope D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:35: error: expected primary-expression before ')' token In file included from D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:6: D:\game dev\direct3d tutorials\d3d17\d3d17\/main.h:37:7: warning: no newline at end of file D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp: In function `int WinMain(HINSTANCE__*, HINSTANCE__*, CHAR*, int)': D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:16: error: `D3DXMATRIX' undeclared (first use this function) D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.) D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:16: error: expected `;' before "matTranslation" D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:47: error: `D3DXCreateTextureFromFile' undeclared (first use this function) D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:63: error: `matRotation' undeclared (first use this function) D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:63: error: `D3DXMatrixRotationY' undeclared (first use this function) D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:64: error: `matTranslation' undeclared (first use this function) D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:64: error: `D3DXMatrixTranslation' undeclared (first use this function) D:\game dev\direct3d tutorials\d3d17\d3d17\main.cpp:91:11: warning: no newline at end of file Execution terminated Pretty much every single tutorial from that website gives me the same errors, all SDK examples give me similar errors, all other sources/tutorials i tried also give me similar errors. What's going on? Any idea?