my code is at below:
/********************************************/
#include <GL/glut.h>
#include <GL/glu.h>
#include <GL/gl.h>
#include <windows.h>
main()
{
InitializeAWindowPlease();
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1.0, 1.0, 1.0);
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
glBegin(GL_POLYGON);
glVertex3f(0.25, 0.25, 0.0);
glVertex3f(0.75, 0.25, 0.0);
glVertex3f(0.75, 0.75, 0.0);
glVertex3f(0.25, 0.75, 0.0);
glEnd();
glFlush();
UpdateTheWindowAndCheckForEvents();
}
/***********************************************/
When I build that… there would be 4 errors:
test_one.obj : error LNK2001: unresolved external symbol _UpdateTheWindowAndCheckForEvents
test_one.obj : error LNK2001: unresolved external symbol _InitializeAWindowPlease
LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
Debug/test_one.exe : fatal error LNK1120: 3 unresolved externals
please help me…why such errors are there…
Thanks!