代码构建成功，但运行代码时出现以下错误-以下是GLUT 3.0的新检查；更新您的代码。GLUT：D:\6th Sem\4中出现致命错误。CG UCS505\EasyAlgo\Project1\Debug\Project1.exe：窗口1需要重新显示，但没有显示回调。
我试过了所有的东西，但都没能弄清楚，我是开gl和v的新手。谢谢你的帮助。
这是.cpp文件代码-
source.cpp
#include <GL/glut.h>
#include <debug.hpp>
#include <config.hpp>
#include <blobs.hpp>
#include <fonts.hpp>
#include <draw.hpp>
#include <highlight.hpp>
#include <animation.hpp>
#include <unistd.h>
#include <iostream>
using namespace std;
unsigned short mainWindow, subWindow1, subWindow2;
void Init(float, float, float);
void Init(float, float, float, int, int);
void mainInit();
void display();
void onClick(int, int, int, int);
void keyPress(unsigned char, int, int);
int main(int argc, char** argv)
{
#ifdef DEBUG
mode = "InsertionSort";
b1.bv.resize(7, blobs());
int rad[7] = { 28,32,20,28,36,45,31 };
for (int p = 0; p < 7; p++)
b1.bv[p].radius = (float)rad[p];
b1.min = 20;
b1.max = 45;
#endif
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(WindowWidth, WindowHeight);
std::string title = "AlgoLucidator " + AL_VERSION;
mainWindow = glutCreateWindow(title.c_str());
glutPositionWindow(WIN_POS_X, WIN_POS_Y);
mainInit();
glutMouseFunc(onClick);
glutKeyboardFunc(keyPress);
subWindow1 = glutCreateSubWindow(mainWindow, 0, 0, WindowWidth / 4, WindowHeight);
Init(0.80f, 0.80f, 0.60f);
glutKeyboardFunc(keyPress);
glutDisplayFunc(display);
subWindow2 = glutCreateSubWindow(mainWindow, WindowWidth / 4, 0, 3 * WindowWidth / 4, WindowHeight);
Init(0.65f, 0.75f, 0.70f);
std::string mainInstruct = "Press 1. InsertionSort 2. BubbleSort 3. Dijkstra";
printText(0, 0, 0, -(5 * mainInstruct.size()), 540, mainInstruct);
glutMouseFunc(onClick);
glutKeyboardFunc(keyPress);
glutDisplayFunc(display);
glutMainLoop();
return 0;
}
void Init(float r, float g, float b)
{
int CurrWindowWidth = glutGet(GLUT_WINDOW_WIDTH);
int CurrWindowHeight = glutGet(GLUT_WINDOW_HEIGHT);
glClearColor(r, g, b, 1);
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
gluOrtho2D(-CurrWindowWidth, CurrWindowWidth, -CurrWindowHeight, CurrWindowHeight);
drawTitle(CurrWindowWidth, CurrWindowHeight);
}
void Init(float r, float g, float b, int width, int height)
{
glClearColor(r, g, b, 1);
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
gluOrtho2D(-width, width, -height, height);
drawTitle(width, height);
}
void mainInit()
{
int CurrWindowWidth = glutGet(GLUT_WINDOW_WIDTH);
int CurrWindowHeight = glutGet(GLUT_WINDOW_HEIGHT);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
gluOrtho2D(0, CurrWindowWidth, 0, CurrWindowHeight);
glClearColor(0, 0, 0, 0.80f);
glClear(GL_COLOR_BUFFER_BIT);
}
void display()
{
glFlush();
}
void onClick(int button, int state, int oldx, int oldy)
{}
void keyPress(unsigned char key, int x, int y)
{
int activeWindow = glutGetWindow();
switch (key)
{
case 13: if (b1.pushreq)
{
b1.bv.push_back(blobs((float)base_radius));
}
if (activeWindow != subWindow2)
glutSetWindow(subWindow2);
if (mode == "InsertionSort")
{
drawInsertionSort();
}
else if (mode == "BubbleSort")
{
drawBubbleSort();
}
break;
case 27: glutDestroyWindow(mainWindow); //Esc
break;
case 49: mode = "InsertionSort";
b1.reset();
glutSetWindow(subWindow2);
glutMouseFunc(onClick2);
Init2(0.65f, 0.75f, 0.70f);
drawTitle3(960, 640);
break;
case 50: mode = "BubbleSort";
glutSetWindow(subWindow2);
glutMouseFunc(onClick3);
glutIdleFunc(display);
Init3(0.65f, 0.75f, 0.70f);
drawTitle4(960, 640);
break;
default:;
}
}
错误消息几乎准确地说明了问题所在以及如何修复(QFT(：
以下是GLUT 3.0的新检查；更新您的代码。GLUT：
(…) Project1.exe中的致命错误：窗口1需要重新显示，但没有显示回调。
对于您创建的第一个窗口，窗口一，使用glutCreateWindow创建的窗口，您没有指定显示回调：
mainWindow = glutCreateWindow(title.c_str());
glutPositionWindow(WIN_POS_X, WIN_POS_Y);
mainInit();
glutMouseFunc(onClick);
glutKeyboardFunc(keyPress);
/// <<<<<<<< something is missing here
subWindow1 = glutCreateSubWindow(mainWindow, 0, 0, WindowWidth / 4, WindowHeight);
给你创建的第一个窗口一个显示回调，错误就会消失。
第二点注意：…Init函数中发生的任何事情都不是初始化。OpenGL是一个状态机，在…Init中所做的一切都是应该在渲染帧开始时进行的状态预处理。