keyboard.c

来自「a source code for banker s algorithm」· C语言 代码 · 共 43 行

#include<windows.h>
#include<glut.h>
#include<gl.h>
#define screenH 480.0
void myInit(void)
{
 glClearColor(1.0,1.0,1.0,1.0);
 glColor3f(0.0f,0.0f,1.0f);
 glPointSize(3.0);
 gluOrtho2D(0.0,640.0,0.0,480.0);
}
void drawdot(int x,int y)
{
glBegin(GL_POINTS);
glVertex2i(x,y);
glEnd();
glFlush();
}
void myKeyboard(unsigned char key,int x,int y)
{
 if(key=='D'|| key=='d')
 {
	drawdot(x,screenH-y);
 }
 else 
	 exit(0);
}
void myDisplay()
{
glClear(GL_COLOR_BUFFER_BIT);
}
void main()
{
 glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);
 glutInitWindowSize(640,480);
 glutInitWindowPosition(100,50);
 glutCreateWindow("keyboard");
 glutDisplayFunc(myDisplay);
 glutKeyboardFunc(myKeyboard);
 myInit();
 glutMainLoop();
}