codeblocks - GLFW 和代码块

Question

我在使用 codeblocks 10.05 识别我机器上的 GLFW 库时遇到了一些困难。当我创建一个空项目并复制粘贴从这个 GLFW 教程中找到的代码时 >> http://content.gpwiki.org/index.php/GLFW:Tutorials:Basics

#include <stdlib.h>
#include <GL/glfw.h>

void Init(void);
void Shut_Down(int return_code);
void Main_Loop(void);
void Draw_Square(float red, float green, float blue);
void Draw(void);

float rotate_y = 0,
      rotate_z = 0;
const float rotations_per_tick = .2;

int main(void)
{
  Init();
  Main_Loop();
  Shut_Down(0);
}

void Init(void)
{
  const int window_width = 800,
            window_height = 600;

  if (glfwInit() != GL_TRUE)
    Shut_Down(1);
  // 800 x 600, 16 bit color, no depth, alpha or stencil buffers, windowed
  if (glfwOpenWindow(window_width, window_height, 5, 6, 5,
                     0, 0, 0, GLFW_WINDOW) != GL_TRUE)
    Shut_Down(1);
  glfwSetWindowTitle("The GLFW Window");

  // set the projection matrix to a normal frustum with a max depth of 50
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  float aspect_ratio = ((float)window_height) / window_width;
  glFrustum(.5, -.5, -.5 * aspect_ratio, .5 * aspect_ratio, 1, 50);
  glMatrixMode(GL_MODELVIEW);
}

void Shut_Down(int return_code)
{
  glfwTerminate();
  exit(return_code);
}

void Main_Loop(void)
{
  // the time of the previous frame
  double old_time = glfwGetTime();
  // this just loops as long as the program runs
  while(1)
  {
    // calculate time elapsed, and the amount by which stuff rotates
    double current_time = glfwGetTime(),
           delta_rotate = (current_time - old_time) * rotations_per_tick * 360;
    old_time = current_time;
    // escape to quit, arrow keys to rotate view
    if (glfwGetKey(GLFW_KEY_ESC) == GLFW_PRESS)
      break;
    if (glfwGetKey(GLFW_KEY_LEFT) == GLFW_PRESS)
      rotate_y += delta_rotate;
    if (glfwGetKey(GLFW_KEY_RIGHT) == GLFW_PRESS)
      rotate_y -= delta_rotate;
    // z axis always rotates
    rotate_z += delta_rotate;

    // clear the buffer
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    // draw the figure
    Draw();
    // swap back and front buffers
    glfwSwapBuffers();
  }
}

void Draw_Square(float red, float green, float blue)
{
  // Draws a square with a gradient color at coordinates 0, 10
  glBegin(GL_QUADS);
  {
    glColor3f(red, green, blue);
    glVertex2i(1, 11);
    glColor3f(red * .8, green * .8, blue * .8);
    glVertex2i(-1, 11);
    glColor3f(red * .5, green * .5, blue * .5);
    glVertex2i(-1, 9);
    glColor3f(red * .8, green * .8, blue * .8);
    glVertex2i(1, 9);
  }
  glEnd();
}

void Draw(void)
{
  // reset view matrix
  glLoadIdentity();
  // move view back a bit
  glTranslatef(0, 0, -30);
  // apply the current rotation
  glRotatef(rotate_y, 0, 1, 0);
  glRotatef(rotate_z, 0, 0, 1);
  // by repeatedly rotating the view matrix during drawing, the
  // squares end up in a circle
  int i = 0, squares = 15;
  float red = 0, blue = 1;
  for (; i < squares; ++i){
    glRotatef(360.0/squares, 0, 0, 1);
    // colors change for each square
    red += 1.0/12;
    blue -= 1.0/12;
    Draw_Square(red, .6, blue);
  }
}

并使用代码块编译它返回了这个错误:

/home/user/Graphics/Project_2/test.c|27|undefined reference to `glfwInit'|
/home/user/Graphics/Project_2/test.c|30|undefined reference to `glfwOpenWindow'|
......
.....
....
...

但是当我创建一个简单的 *.c 文件并编译它时:

gcc myprog.c -o myprog -lglfw -lGL -lpthread

它有效.. 我怎样才能使代码块与 GLFW 一起工作？谢谢

Answer 1

按照以下步骤操作。

1. 首先从 here 下载 GLFW .
2. 解压zip文件
3. 从 include 文件夹中复制 glfw.h 文件并粘贴到文件夹“C:\Program Files\CodeBlocks\MinGW\include\GL”
4. 从 lib_mingw 文件夹中复制所有文件(libglfw.a 和 libglfwdll.a)并粘贴到文件夹“C:\Program Files\CodeBlocks\MinGW\lib”
5. 解压lib_mingw文件夹中的glfw.dll文件并粘贴在“C:\Windows\System32”文件夹中。如果您不想将它保留在 system32 中，那么您可以将它与您的项目 exe 文件一起保留。
6. 现在在 code::blocks 中创建 GLFW 项目时，为 glfw 位置提供路径 C:\Program Files\CodeBlocks\MinGW"
7. 如果您再次感到困惑，请前往 here一步一步的过程和每一步的图像。