当我运行程序时显示此错误时,您会知道告诉我是什么问题吗?我该如何解决?
我的代码:
#include <windows.h>
#include <gl/gl.h>
#include <gl/glu.h>
#include <gl/glut.h>
#include <GLFW/glfw3.h>
#include "Rect.h"
const int rows = 40;
const int cols = 20;
const int length = rows * cols;
int width = 905;
int height = 720;
Rect * list[length];
void createList() {
for (int i = 0; i < length; i++) {
list[i] = new Rect();
}
}
void createQuad(int index) {
int wQuad = (width / 20) - 5;
int hQuad = 12;
int margin = 5;
int marginTop = (index / 20) * (hQuad + margin) + margin;
int marginLeft = (index % 20) * (wQuad + margin) + margin;
if (list[index]->getVisible()) {
glColor3ub(list[index]->getR(), list[index]->getG(), list[index]- >getB());
} else {
glColor3ub(0, 0, 0);
}
glBegin(GL_QUADS);
glVertex2i(marginLeft , marginTop ); // A
glVertex2i(marginLeft + wQuad, marginTop ); // B
glVertex2i(marginLeft + wQuad, marginTop + hQuad); // D
glVertex2i(marginLeft , marginTop + hQuad); // C
glEnd();
}
void display2(void) {
glClear(GL_COLOR_BUFFER_BIT);
for (int p = 0; p < length; p++) {
createQuad(p);
}
glutSwapBuffers();
}
void init() {
glClearColor(0, 0, 0, 0);
glOrtho(0, 905, 720, 0, -0.5f, 0.5f);
glViewport(0, 0, 905, 720);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
}
int CALLBACK WinMain(
__in HINSTANCE hInstance,
__in HINSTANCE hPrevInstance,
__in LPSTR lpCmdLine,
__in int nCmdShow
) {
GLFWwindow* window;
// Initialize the library
if (!glfwInit())
return -1;
// Create the window
window = glfwCreateWindow(905, 720, "Color Game", NULL, NULL);
if (!window) {
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
init();
// Create list...
createList();
char *myargv[1];
int myargc = 1;
myargv[0] = strdup("ColorGame");
while (!glfwWindowShouldClose(window)) {
glutInit(&myargc, myargv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
glutInitWindowPosition(100, 100);
glutInitWindowSize(width, height);
glutDisplayFunc(display2);
// display2();
// glutReshapeFunc(reshape);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwTerminate();
return 0;
}
错误在这一行:
glutDisplayFunc(display2);
如果我只把display2();可以,但是我需要把glutDisplayFunc(display2);因为在我需要用这一行处理鼠标事件之后glutMouseFunc(mouse);如果我放glutMouseFunc(mouse);显示相同的错误。
最佳答案
使用GLUT xor GLFW。它们都是希望单独控制事件循环的应用程序框架,不能同时使用。选择一个并坚持下去。
使用GLUT的示例(不得不猜测Rect
的实现):
#include <GL/glut.h>
const int rows = 40;
const int cols = 20;
const int length = rows * cols;
int width = 905;
int height = 720;
class Rect
{
public:
Rect()
: mVisible( rand() % 100 < 80 )
, mR( rand() % 255 )
, mG( rand() % 255 )
, mB( rand() % 255 )
{
}
bool getVisible() { return mVisible; }
unsigned char getR() { return mR; }
unsigned char getG() { return mG; }
unsigned char getB() { return mB; }
private:
bool mVisible;
unsigned char mR;
unsigned char mG;
unsigned char mB;
};
Rect* list[length];
void createList()
{
for (int i = 0; i < length; i++)
{
list[i] = new Rect();
}
}
void createQuad(int index)
{
int wQuad = (width / 20) - 5;
int hQuad = 12;
int margin = 5;
int marginTop = (index / 20) * (hQuad + margin) + margin;
int marginLeft = (index % 20) * (wQuad + margin) + margin;
if( list[index]->getVisible() )
{
glColor3ub
(
list[index]->getR(),
list[index]->getG(),
list[index]->getB()
);
}
else
{
glColor3ub(0, 0, 0);
}
glBegin(GL_QUADS);
glVertex2i( marginLeft , marginTop ); // A
glVertex2i( marginLeft + wQuad, marginTop ); // B
glVertex2i( marginLeft + wQuad, marginTop + hQuad ); // D
glVertex2i( marginLeft , marginTop + hQuad ); // C
glEnd();
}
void display2(void)
{
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
glOrtho(0, 905, 720, 0, -0.5f, 0.5f);
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
for (int p = 0; p < length; p++)
{
createQuad(p);
}
glutSwapBuffers();
}
int main( int argc, char** argv )
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
glutInitWindowPosition(100, 100);
glutInitWindowSize(width, height);
glutCreateWindow("ColorGame");
createList();
glutDisplayFunc(display2);
glutMainLoop();
return 0;
}