Graphics

glLoadIdentity();

<pre>//display
// normal parametrized function
// passive
void OpenGL_text(char *message, float x, float y, float z) {

//#ifdef BYPASS
	printf("\nOPENGL TRACE OpenGL  @function %s  @line %i \n", __FUNCTION__,
	__LINE__);

	printf("\nOPENGL TRACE STOP passed message %s @line %i\n", message,
	__LINE__);
//#endif passive

	char menu[80];
	strcpy(menu, message); // local copy ??
	int len;
	len = strlen(menu);
	glColor3f(1, 1, 1);    // white text

//#ifdef BYPASS
	{ // GL_PROJECTION block
		glMatrixMode( GL_PROJECTION); // ??
		glPushMatrix();               // there is only one (?)
		glLoadIdentity();             // clear projection matrix  - why (?)

		gluOrtho2D(0, 500, 0, 500);   // MN !!
		{ // GL_MODELVIEW block
			glMatrixMode( GL_MODELVIEW);
			glPushMatrix();

			glLoadIdentity();         // clear bitmap (?)
//#endif
			glRasterPos3f(x, y, z); // wrong !! text start postion

			for (int i = 0; i < len; ++i) {
				glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, menu[i]);
			}
//#ifdef BYPASS
			glPopMatrix();        // GL_MODELVIEW
		} // GL_MODELVIEW block
		glMatrixMode( GL_PROJECTION);
		glPopMatrix();
	} // GL_PROJECTION block
	glMatrixMode( GL_MODELVIEW);
//#endif

}

Here is the class ->

class bullet
{
   private:
   public:
     void update();
     bool check()
     {
        if(y>=box_len/2)
        {
        return true;
        }
        return false;
     }
     void draw();
};
vector <bullet*> bullets;


Here is the update function ->

void update(int value)
{
  for( typeof(bullets.begin()) it= bullets.begin(); it!= bullets.end();it++)
  {
    if((*it)!=NULL)
    {
      if(*it)->check())
      {
        delete *it;
        bullets.erase(it);
      }
    }
  }
  glutTimerFunc(10, update, 0);
}

Member 14558696 wrote:

How can I achieve that?

using (Graphics g = Graphics.FromImage(bitmap))
            {
                g.CopyFromScreen(bounds2.Location, Point.Empty, bounds2.Size);
            }