OpenGL bitmap fonts显示文字显示不出来
我在学习OpenGL NeHe教程的时候，看到第13课bitmap fonts显示文字到屏幕上的时候，用glut库写代码，但是程序运行出来不报错，就是窗口上一片漆黑，没有显示出文字。运行环境是VS2008.系统是Win7.有哪位好心的大侠能够帮我看看吗？感激不尽！
我的代码：
#pragma comment(lib,"GLAUX.LIB")#include <GL/glut.h>#include <windows.h>#include <GL/glaux.h>#include <stdio.h>#include <stdarg.h>#include <math.h>HDC hDC = NULL;GLuint base;//the first display list we createGLfloat cnt1 = 3.f,cnt2 = 0.6f;//move on the screen or set colorGLvoid buildFont() // Build Our Bitmap Font{ HFONT font; // Windows Font ID HFONT oldfont; // Used For Good House Keeping base = glGenLists(96); // Storage For 96 Characters font = CreateFont( -24, // Height Of Font 0, // Width Of Font 0, // Angle Of Escapement 0, // Orientation Angle FW_BOLD, // Font Weight FALSE, // Italic FALSE, // Underline FALSE, // Strikeout ANSI_CHARSET, // Character Set Identifier OUT_TT_PRECIS, // Output Precision CLIP_DEFAULT_PRECIS, // Clipping Precision ANTIALIASED_QUALITY, // Output Quality FF_DONTCARE|DEFAULT_PITCH, // Family And Pitch "Times New Roman"); // Font Name oldfont = (HFONT)SelectObject(hDC, font); // Selects The Font We Want wglUseFontBitmaps(hDC, 32, 96, base); // Builds 96 Characters Starting At Character 32 SelectObject(hDC, oldfont); // Selects The Font We Want DeleteObject(font); // Delete The Font printf("build font successfully!\n");}void killFont(){ glDeleteLists(base,96);}void glPrint(const char *fmt, ...) // Custom GL "Print" Routine{ char text[256]; // Holds Our String va_list ap; // Pointer To List Of Arguments if (fmt == NULL) // If There's No Text { printf("the string to print is NULL!\n"); return; // Do Nothing } va_start(ap, fmt); // Parses The String For Variables vsprintf(text, fmt, ap); // And Converts Symbols To Actual Numbers va_end(ap); // Results Are Stored In Text printf("text = %s\n",text); printf("strlen(text) = %d\n",strlen(text)); glPushAttrib(GL_LIST_BIT); // Pushes The Display List Bits glListBase(base - 32); // Sets The Base Character to 32 glCallLists(strlen(text), GL_UNSIGNED_BYTE, text); // Draws The Display List Text glPopAttrib(); // Pops The Display List Bits}int init(GLvoid) // All Setup For OpenGL Goes Here{ glShadeModel(GL_SMOOTH); // Enable Smooth Shading glClearColor(0.0f, 0.0f, 0.0f, 0.5f); // Black Background glClearDepth(1.0f); // Depth Buffer Setup glEnable(GL_DEPTH_TEST); // Enables Depth Testing glDepthFunc(GL_LEQUAL); // The Type Of Depth Testing To Do glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Really Nice Perspective Calculations buildFont(); // Build The Font return TRUE; // Initialization Went OK}void display() // Here's Where We Do All The Drawing{ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer glLoadIdentity(); // Reset The Current Modelview Matrix glTranslatef(0.0f,0.0f,-1.0f); // Move One Unit Into The Screen // Pulsing Colors Based On Text Position glColor3f(1.0f*float(cos(cnt1)),1.0f*float(sin(cnt2)),1.0f-0.5f*float(cos(cnt1+cnt2))); //glColor3f(1.0f,0.0f,0.0f); // Position The Text On The Screen glRasterPos2f(-0.45f+0.05f*float(cos(cnt1)), 0.32f*float(sin(cnt2))); /*glBegin(GL_TRIANGLES); glColor3f(1.0f,0.0f,0.0f); glVertex3f(0.0f,1.0f,0.0f); glColor3f(0.0f,1.0f,0.0f); glVertex3f(-1.0f,-1.0f,0.0f); glColor3f(0.0f,0.0f,1.0f); glVertex3f(1.0f,-1.0f,0.0f); glEnd();*/ glPrint("Active OpenGL Text With NeHe - %7.2f", cnt1); // Print GL Text To The Screen glutSwapBuffers();// Everything Went OK}void spinDisplay(){ cnt1 += 0.051f; cnt2 += 0.005f; printf("cnt1: %f\n",cnt1); printf("cnt2: %f\n",cnt2);}void reshape(int w,int h){ if (0 == h) h = 1; glViewport(0,0,(GLsizei)w,(GLsizei)h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(45.0,(GLfloat)w / (GLfloat)h,0.1f,100.0f); glMatrixMode(GL_MODELVIEW); glLoadIdentity();}int main(int argc,char** argv){ glutInit(&argc,argv); glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB); glutInitWindowSize(600,600); glutInitWindowPosition(100,100); glutCreateWindow("Bitmap Fonts"); init(); glutDisplayFunc(display); glutReshapeFunc(reshape); //glutIdleFunc(spinDisplay); //glutKeyboardFunc(keyboard); glutMainLoop(); killFont(); return 0;}