mouse.c

来自「a source code for banker s algorithm」· C语言 代码 · 共 49 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,1.0f,1.0f);
	glPointSize(4.0);
	gluOrtho2D(0.0,640.0,0.0,480.0);
}


void drawdot(int x,int y)
{
	glBegin(GL_POINTS);
	glVertex2i(x,y);
	glEnd();
	glFlush();
}

void myMouse(int but,int state,int x,int y)
{
	if(but==GLUT_LEFT_BUTTON && state==GLUT_DOWN)
	{ 
		drawdot(x,screenH-y);
	}
	else if(but==GLUT_RIGHT_BUTTON && state==GLUT_DOWN)
	exit(0);
 
}

void myDisplay()
{
	glClear(GL_COLOR_BUFFER_BIT);
}
void main()
{
	glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);
	glutInitWindowSize(640,480);
	glutInitWindowPosition(100,50);
	glutCreateWindow("mouse");
	glutDisplayFunc(myDisplay);
	glutMouseFunc(myMouse);
	myInit();
	glutMainLoop();
}