|
A problem of using opengl in fltk
My compiler is Dev-cpp.i'm using fltk 1.1 7
When I created a new fltk gui project ,i added the next code in it :
#include <FL/Fl.H>
#include <FL/Fl_Gl_Window.H>
#include <FL/gl.h>
#include<Gl/glut.h>
//
// Simple resizable 2D GL window
// erco 10/08/05
//
class MyGlWindow : public Fl_Gl_Window {
// DRAW METHOD
// OpenGL window: (w,h) is upper right, (-w,-h) is lower left, (0,0) is center
//
void draw() {
// First time? init viewport, etc.
if (!valid()) {
valid(1);
glLoadIdentity();
glViewport(0,0,w(),h());
glOrtho(-w(),w(),-h(),h(),-1,1);
}
// Clear screen
glClear(GL_COLOR_BUFFER_BIT);
// Draw white 'X'
glColor3f(1.0, 1.0, 1.0);
glBegin(GL_LINE_STRIP); glVertex2f(w(), h()); glVertex2f(-w(),-h()); glEnd();
glBegin(GL_LINE_STRIP); glVertex2f(w(),-h()); glVertex2f(-w(), h()); glEnd();
}
// HANDLE WINDOW RESIZING
// If window reshaped, need to readjust viewport/ortho
//
void resize(int X,int Y,int W,int H) {
Fl_Gl_Window::resize(X,Y,W,H);
glLoadIdentity();
glViewport(0,0,W,H);
glOrtho(-W,W,-H,H,-1,1);
redraw();
}
public:
// CONSTRUCTOR
MyGlWindow(int X,int Y,int W,int H,const char*L=0) : Fl_Gl_Window(X,Y,W,H,L) {
}
};
// MAIN
int main() {
Fl_Window win(500, 300);
MyGlWindow mygl(10, 10, win.w()-20, win.h()-20);
win.resizable(mygl);
win.show();
return(Fl::run());
}
then i compiled it,but not succeeded.the message is :
Code:
[Linker error] undefined reference to `Fl_Gl_Window::~Fl_Gl_Window()'
[Linker error] undefined reference to `vtable for Fl_Gl_Window'
[Linker error] undefined reference to `Fl_Gl_Window::init()'
[Linker error] undefined reference to `Fl_Gl_Window::flush()'
[Linker error] undefined reference to `Fl_Gl_Window::show()'
[Linker error] undefined reference to `Fl_Gl_Window::hide()'
[Linker error] undefined reference to `Fl_Gl_Window::draw_overlay()'
[Linker error] undefined reference to `Fl_Gl_Window::resize(int, int, int, int)'
[Linker error] undefined reference to `glLoadIdentity@0'
.....
[Linker error] undefined reference to `glEnd@0'
[Linker error] undefined reference to `Fl_Gl_Window::~Fl_Gl_Window()'
ld returned 1 exit status
G:\profile\Dev-Cpp\execise\Makefile.win [Build Error] [t4.exe] Error 1
what can i do ?
Thank you!
Last edited by cable_guy_67 : 09-Aug-2006 at 05:29.
Reason: Please surround your code with [cpp] ... [/cpp]
|
08-Aug-2006, 22:26
Problems with the Navy (Chiefs) by crystalattice
Similar Threads
