Set background in C++ using OpenGl

[computerfox]

Hello everyone,

I've been working on this application and I wanted to set an image as a background. I am using OpenGL, more specifically I'm on a Mac.

My code:

void glBackground(char* filename){
	//Set background image
        glEnable(GL_TEXTURE_2D);
        int width, height;
        unsigned char* data;
        FILE* file;
        width=2000;
        height=2000;
	GLuint texture;
       	data=(unsigned char *)malloc( width * height * 3 );
        file=fopen(filename,"rb");
        fread(data, width * height * 3, 1, file);
        fclose(file);

	glBindTexture( GL_TEXTURE_2D, texture );
	
	glGenTextures( 1, &texture );
    	glBindTexture( GL_TEXTURE_2D, texture );
    	glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );

    	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_LINEAR );
    	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,GL_LINEAR );
	
    	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
    	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
	
    	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0,GL_RGB, GL_UNSIGNED_BYTE, data);
	
	
	glBegin(GL_POLYGON);
	glTexCoord2f(-1.-1,0.0); glVertex2f(-1, -1);
	glTexCoord2f(1.-1,0.0); glVertex2f(1, -1);
	glTexCoord2f(1.1,0.0); glVertex2f(1, 1);
	glTexCoord2f(-1.1,0.0); glVertex2f(-1,1);
	glEnd();

	glFlush();
}

My problem:
It doesn't load the image. Instead it just gives a splat of dots with random colors.

Any ideas?