title: How to get screen height and width in C
body: <p>I get this following code. </p>
  
  <pre><code>typedef struct _display {
  int fd;         /* Network socket. */
  Window root;        /* Root window id. */
  int vnumber;        /* X protocol version number. */
  int dtype;      /* X server display device type. */
  int dplanes;        /* Number of display bit planes. */
  int dcells;     /* Number of display color map cells. */
  _QEvent *head, *tail;   /* Input event queue. */
  int qlen;       /* Length of input event queue */
  int request;        /* Id of last request. */
  char * lastdraw;    /* Last draw request. */
  char *buffer;       /* Output buffer starting address. */
  char *bufptr;       /* Output buffer index pointer. */
  char *bufmax;       /* Output buffer maximum+1 address. */
  int squish;     /* Squish MouseMoved events? */
  Pixmap black, white;    /* Constant tile pixmaps */
  char *displayname;  /* "host:display" string used on this connect*/
  int width, height;  /* width and height of display */
  } Display;
  </code></pre>
  
  <p>But what I don't get, is where X gets the width and height of the monitor. Would anyone happen to know the answer, or be able to point me in the right direction?</p>
  
  <p>Thanks, Arch</p>