glColor（）未在此范围内声明

Question

我有以下头文件：

#ifndef CLASSES_H
#define CLASSES_H

class Mouse // Handles clicking of the mouse

{

private:



public:

Mouse()
{

    // Constructor

}

void handle_input(int x, int y) // Takes arguments of xloc and yloc of the mouse          pointer
{



}

};

class Game_Grid

{

private:



public:



};

class Red_Jewel // Is a circle shape

{

private:

int offset;

public:

Red_Jewel(int offset)
{

    this -> offset = offset;

}

void draw()
{

    glColor(256,0,0); // Red


}

};

class Green_Jewel // Is a triangle shape

{

private:

int offset;

public:

Green_Jewel(int offset)
{

    this -> offset = offset;

}

void draw()
{

    glColor(0,256,0); // Green

}

};

class Blue_Jewel // Is a square shape

{

private:

int offset;

public:

Blue_Jewel(int offset)
{

    this -> offset = offset;

}

void draw()
{

    glColor(0,0,256); // Blue

}

};

// Define objects here; circle jewel, triangle jewel, square jewel, the game grid

#endif // CLASSES_H

包含在具有以下内容的.cpp主文件中：

#include <SDL/SDL.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include "classes.h" // objects within the game
#include <iostream>

在头文件中使用glColor（）给我“在此范围内未声明”错误，即使我在头文件中包含了所有上述标题。我之前从未经历过这种情况，也不知道为什么我会收到这些错误。

感谢您的帮助！

Answer 1

您正在寻找的电话是glColor3ub（255,0,0）;不是glColor（255,0,0）;