Function ddgr_Init

dd_grwin32/ddgrWin32Init.cpp:92–136

ddgr_Init app = application object. subsystem = subsystem name ('DirectDraw', 'GDI') fullscreen = whether it's full screen or windowed */

                fullscreen = whether it's full screen or windowed
*/
bool ddgr_Init(oeApplication *app, char *subsystem, bool fullscreen) {
  static bool first_time = true;
  int subsys_id;

  //	close old systems
  if (first_time) {
    atexit(ddgr_Close);
    first_time = false;
  } else if (LIB_DATA(init)) {
    ddgr_Close();
  }

  //	find subsystem id based off of subsystem requested.
  for (subsys_id = 0; DDGR_subsystems[subsys_id] != -1; subsys_id++) {
    if (strcmp(DDGR_subsystem_names[subsys_id], subsystem) == 0)
      break;
  }

  if (DDGR_subsystems[subsys_id] == -1)
    ddgr_FatalError("Subsystem %s not found during startup.", subsystem);

  LIB_DATA(subsystem) = DDGR_subsystems[subsys_id];

  //	Initialize that subsystem
  switch (DDGR_subsystems[subsys_id]) {
  case DDGR_GDI_SUBSYSTEM:
    ddgr_gdi_Init(app, fullscreen, false);
    break;
  case DDGR_GDIX_SUBSYSTEM:
    ddgr_gdi_Init(app, fullscreen, true);
    break;
  case DDGR_DX_SUBSYSTEM:
    ddgr_dx_Init(app);
    break;

  default:
    Int3();
  }

  LIB_DATA(init) = true;
  DDGR_subsysid = subsys_id;
  DDGR_fullscreen = fullscreen;

  return true;
}

void ddgr_Close() {
  if (!LIB_DATA(init))