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OpenGL opengl32.lib, glu32.lib, glaux.lib and gl.h

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Hi all, I am learning glut because most book uses it. 1.When we write opengl program, do we need opengl32.lib, glu32.lib, glaux.lib ? 2. Where could we download them? (They are not included in glut.zip) 3. What does gl.h do? Again, where could we download gl.h? #include <windows.h> #include <GL/gl.h> #include <GL/glut.h> int a[3]={10,10,10}, b[3]={10,-10,10}, c[3]={-10,-10,10}, d[3]={-10,10,10}, e[3]={10,10,-10}, f[3]={10,-10,-10}, g[3]={-10,-10,-10}, h[3]={-10,10,-10}; float angle=1.0; void drawcube(void) { glClear(GL_COLOR_BUFFER_BIT); glColor3f(1.0, 1.0, 1.0); glMatrixMode(GL_MODELVIEW); glRotatef(angle, 0.0, 1.0, 0.0); glBegin(GL_LINE_LOOP); glVertex3iv(a); glVertex3iv(b); glVertex3iv(c); glVertex3iv(d); glEnd(); glBegin(GL_LINE_LOOP); glVertex3iv(a); glVertex3iv(e); glVertex3iv(f); glVertex3iv(b); glEnd(); glBegin(GL_LINE_LOOP); glVertex3iv(d); glVertex3iv(h); glVertex3iv(g); glVertex3iv(c); glEnd(); glBegin(GL_LINE_LOOP); glVertex3iv(e); glVertex3iv(f); glVertex3iv(g); glVertex3iv(h); glEnd(); glFlush(); glutSwapBuffers(); } void keyboard(unsigned char key, int x, int y) { switch (key) { case 0x1B: case 'q': case 'Q': exit(0); break; } } void mouse(int btn, int state, int x, int y) { if (state == GLUT_DOWN) { if (btn == GLUT_LEFT_BUTTON) angle = angle + 1.0f; else if (btn == GLUT_RIGHT_BUTTON) angle = angle - 1.0f; else angle = 0.0f; } } int main(int argc, char **argv) { glutInit(&argc, argv); glutInitWindowSize(500, 500); glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE); glutCreateWindow("Glut rotate"); glutMouseFunc(mouse); glutKeyboardFunc(keyboard); glutDisplayFunc(drawcube); glutIdleFunc(drawcube); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(-30.0, 30.0, -30.0, 30.0, -30.0, 30.0); glRotatef(30.0, 1.0, 0.0, 0.0); glMatrixMode(GL_MODELVIEW); glClearColor(0.0, 0.0, 0.0, 0.0); glutMainLoop(); return(0); }

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"1.When we write opengl program, do we need opengl32.lib, glu32.lib, glaux.lib ?
2. Where could we download them?
(They are not included in glut.zip)
3. What does gl.h do? Again, where could we download gl.h?"

1. Yes. They're the connecting bit that joins your application to the part of the operating system which does 3D graphics.

2. Should be installed. Mine are under "Program Files/Microsoft SDKs/Windows"

3. It defines all the opengl functions like glVertex3f(). It should be part of your dev kit and just a few directories away from opengl32.lib

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Quote:
Original post by Katie
1. Yes. They're the connecting bit that joins your application to the part of the operating system which does 3D graphics.

Just to clarify here, that the different files connect different things. opengl32.lib for example connects the core of OpenGL, and glu32.lib only connects GLU (the utility library). If you don't use the utility library, then you don't need glu32.lib.

This is true for any library; you only need the ones that provides the parts you use.

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Original post by Brother Bob
Quote:
Original post by Katie
1. Yes. They're the connecting bit that joins your application to the part of the operating system which does 3D graphics.

Just to clarify here, that the different files connect different things. opengl32.lib for example connects the core of OpenGL, and glu32.lib only connects GLU (the utility library). If you don't use the utility library, then you don't need glu32.lib.

This is true for any library; you only need the ones that provides the parts you use.


Thank you a lot, because i always include glu32.lib and opengl32.lib ..

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