public static extern void Set_API_Charset(int param0, ref Error_Control_Block error);
public static extern void Close_Instance(ref Error_Control_Block error);
public static extern void Switch_Instance(short handle, ref Error_Control_Block error);
public static extern int IGR_Canvas_Reset(int canvas, ref Error_Control_Block error);
public static extern void Init_Instance(int reserved, [In()][MarshalAs(UnmanagedType.LPStr)] string path, ref Instance_Status_Block init, ref short handle, ref Error_Control_Block error);
public static extern int IGR_Canvas_DrawScaleImage(int canvas, int x, int y, int x2, int y2, Byte[] imagedata, [MarshalAs(UnmanagedType.SysUInt)] IntPtr imagesize, [In()][MarshalAs(UnmanagedType.LPWStr)] string mimetype, ref Error_Control_Block error);
public static extern int IGR_Canvas_Rotation(int canvas, int degrees, ref Error_Control_Block error);
public static extern int IGR_Canvas_SetOpacity(int canvas, byte opacity, ref Error_Control_Block error);
public static extern int IGR_Canvas_SetFont(int canvas, [In()][MarshalAs(UnmanagedType.LPWStr)] string fontFamily, int size, int style, ref Error_Control_Block error);
public static extern int IGR_Canvas_SetBrush(int canvas, int color, int style, ref Error_Control_Block error);
public static extern int IGR_Canvas_MeasureText(int canvas, [In()][MarshalAs(UnmanagedType.LPWStr)] string text, ref int width, ref int height, ref Error_Control_Block error);
public static extern int IGR_Canvas_TextRect(int canvas, int x, int y, int x2, int y2, [In()][MarshalAs(UnmanagedType.LPWStr)] string text, int flags, ref Error_Control_Block error);
