Re: [Freeglut-developer] glutLeaveMainLoop doesn't exit immediately

[Ioannis P. <ioa...@gm...>]

>
> > I don't know what you are trying to achieve with null events, as you
> > didn't quote any relevant context, so I can't help with alternative
> > suggestions without more info. Is this about a bug which affects the X11
> > back-end? If so let me know how to reproduce it, and I'll give it a
> > look.
>

Try the following code. Make sure that before you run, the mouse pointer
is moved outside the window. Then press ESC and wait 1 sec. The program
should exit (which in my case doesn't). Then, if you hover the mouse over
the
window, it exits. Without the 1 sec delay it sometimes exits immediately.
I have only tested it on Windows XP, neither X11 nor android.

Ioannis


#include <GL/freeglut.h>
#include <stdio.h>
#include <time.h>
void ReshapeWindow(int w, int h)
{
    glViewport(0, 0, w, h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho (0.0, (float)w, 0.0,(float)h, -1, 1);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity ();
}
void Print2d(int x, int y, char *msg)
{
    unsigned int i;
    glRasterPos2i(x, y);
    for (i=0;i<(int)strlen(msg);i++)
        glutBitmapCharacter(GLUT_BITMAP_8_BY_13, msg[i]);
}
void DrawWindow()
{
    glDrawBuffer(GL_BACK);
    glClear(GL_COLOR_BUFFER_BIT);
    Print2d(10, 10, "Press ESC to exit after 1 sec");
    glutSwapBuffers();
}
void KeyCallback(unsigned char key, int x, int y)
{
    time_t t0;
    if (key!=27) return;
    t0=clock();
    while (clock()-t0<1000);
    glutLeaveMainLoop();
}
int main(int argc, char** argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode (GLUT_RGB);
    glutCreateWindow (" glutLeaveMainLoop bug! ");
    glutReshapeFunc (ReshapeWindow);
    glutDisplayFunc (DrawWindow);
    glutKeyboardFunc (KeyCallback);
    glClearColor(0., 0., 1., 1.);
    glutMainLoop();
    return 0;
}