• Is there an atoi() equivalent for WCHAR strings?

  • strtolW() from wine/unicode.h - it's also aliased to atoiW() and atolW()

• How do I determine what the OpenGL error is for the checkGLcall() macro?

  • The checkGLcall() macro is defined in wined3d_private.h, and it pulls the error codes from <GL/gl.h>:

#define GL_NO_ERROR                       0
#define GL_INVALID_ENUM                   0x500
#define GL_INVALID_VALUE                  0x0501
#define GL_INVALID_OPERATION              0x0502
#define GL_STACK_OVERFLOW                 0x0503
#define GL_STACK_UNDERFLOW                0x0504
#define GL_OUT_OF_MEMORY                  0x0505
#define GL_TABLE_TOO_LARGE                0x8031

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