C++ BlackPixel函數代碼示例

int
puglCreateWindow(PuglView* view, const char* title)
{
	PuglInternals* const impl = view->impl;

	impl->display = XOpenDisplay(NULL);
	impl->screen  = DefaultScreen(impl->display);

	XVisualInfo* const vi = getVisual(view);
	if (!vi) {
		XCloseDisplay(impl->display);
		impl->display = NULL;
		return 1;
	}

#ifdef PUGL_HAVE_GL
	int glxMajor, glxMinor;
	glXQueryVersion(impl->display, &glxMajor, &glxMinor);
	PUGL_LOGF("GLX Version %d.%d\n", glxMajor, glxMinor);
#endif

	Window xParent = view->parent
		? (Window)view->parent
		: RootWindow(impl->display, impl->screen);

	Colormap cmap = XCreateColormap(
		impl->display, xParent, vi->visual, AllocNone);

	XSetWindowAttributes attr;
	memset(&attr, 0, sizeof(XSetWindowAttributes));
	attr.background_pixel = BlackPixel(impl->display, impl->screen);
	attr.border_pixel     = BlackPixel(impl->display, impl->screen);
	attr.colormap         = cmap;
	attr.event_mask       = (ExposureMask | StructureNotifyMask |
	                         EnterWindowMask | LeaveWindowMask |
	                         KeyPressMask | KeyReleaseMask |
	                         ButtonPressMask | ButtonReleaseMask |
	                         PointerMotionMask | FocusChangeMask);

	impl->win = XCreateWindow(
		impl->display, xParent,
		0, 0, view->width, view->height, 0, vi->depth, InputOutput, vi->visual,
		CWBackPixel | CWBorderPixel | CWColormap | CWEventMask, &attr);

	if (!createContext(view, vi)) {
		XDestroyWindow(impl->display, impl->win);
		impl->win = 0;

		XCloseDisplay(impl->display);
		impl->display = NULL;

		return 1;
	}

	XSizeHints sizeHints;
	memset(&sizeHints, 0, sizeof(sizeHints));
	if (!view->resizable) {
		sizeHints.flags      = PMinSize|PMaxSize;
		sizeHints.min_width  = view->width;
		sizeHints.min_height = view->height;
		sizeHints.max_width  = view->width;
		sizeHints.max_height = view->height;
		XSetNormalHints(impl->display, impl->win, &sizeHints);
	} else if (view->min_width > 0 && view->min_height > 0) {
		sizeHints.flags      = PMinSize;
		sizeHints.min_width  = view->min_width;
		sizeHints.min_height = view->min_height;
		XSetNormalHints(impl->display, impl->win, &sizeHints);
	}

	if (title) {
		XStoreName(impl->display, impl->win, title);
	}

	if (!view->parent) {
		Atom wmDelete = XInternAtom(impl->display, "WM_DELETE_WINDOW", True);
		XSetWMProtocols(impl->display, impl->win, &wmDelete, 1);
	}

	if (glXIsDirect(impl->display, impl->ctx)) {
		PUGL_LOG("DRI enabled (to disable, set LIBGL_ALWAYS_INDIRECT=1\n");
	} else {
		PUGL_LOG("No DRI available\n");
	}

	XFree(vi);

	return PUGL_SUCCESS;
}

int main(void)
{
	Display *display;
	Window window;      //initialization for a window
	int screen;         //which screen

	/* open connection with the server */
	display = XOpenDisplay(NULL);
	if(display == NULL) {
		fprintf(stderr, "cannot open display\n");
		return 0;
	}

	screen = DefaultScreen(display);

	/* set window size */
	int width = 400;
	int height = 400;

	/* set window position */
	int x = 0;
	int y = 0;

	/* border width in pixels */
	int border_width = 0;

	/* create window */
	window = XCreateSimpleWindow(display, RootWindow(display, screen), x, y, width, height, border_width,
					BlackPixel(display, screen), WhitePixel(display, screen));

	/* create graph */
	GC gc;
	XGCValues values;
	long valuemask = 0;

	gc = XCreateGC(display, window, valuemask, &values);
	//XSetBackground (display, gc, WhitePixel (display, screen));
	XSetForeground (display, gc, BlackPixel (display, screen));
	XSetBackground(display, gc, 0X0000FF00);
	XSetLineAttributes (display, gc, 1, LineSolid, CapRound, JoinRound);

	/* map(show) the window */
	XMapWindow(display, window);
	XSync(display, 0);

	struct timespec timeStart, timeEnd;
	clock_gettime(CLOCK_REALTIME, &timeStart);
	/* draw points */
	int* repeatsBuffer;
	Compl z, c;
	int repeats;
	double temp, lengthsq;
	int i, j;
	repeatsBuffer  = (int*)malloc(sizeof(int) * width * height);

	#pragma omp parallel for num_threads(60) private(i,j,repeats,lengthsq,temp,z,c) schedule(static,10)
	for(i=0; i<width; i++) {
		for(j=0; j<height; j++) {
			z.real = 0.0;
			z.imag = 0.0;
			c.real = -2.0 + (double)i * (4.0/(double)width);
			c.imag = -2.0 + (double)j * (4.0/(double)height);
			repeats = 0;
			lengthsq = 0.0;

			while(repeats < 100000 && lengthsq < 4.0) { /* Theorem : If c belongs to M, then |Zn| <= 2. So Zn^2 <= 4 */
				temp = z.real*z.real - z.imag*z.imag + c.real;
				z.imag = 2*z.real*z.imag + c.imag;
				z.real = temp;
				lengthsq = z.real*z.real + z.imag*z.imag;
				repeats++;
			}
			repeatsBuffer[i*width+j]=repeats;
		}
	}

	clock_gettime(CLOCK_REALTIME, &timeEnd);

	printf("Time Usage: %lf s\n", (double)(timeEnd.tv_sec - timeStart.tv_sec) + (double)(timeEnd.tv_nsec - timeStart.tv_nsec)/1e9);
	fflush(stdout);
	for(i = 0; i < width * height; i++){
		XSetForeground (display, gc,  1024 * 1024 * (repeatsBuffer[i] % 256));
		XDrawPoint (display, window, gc, i/width, i%width);
	}
	XFlush(display);
	free(repeatsBuffer);

	sleep(2);
	return 0;
}

int main(int argc, char** argv)
{
    Display* dpy = XOpenDisplay(NULL);
    if (dpy == NULL)
    {
        fprintf(stderr, "Cannot open display\n");
        exit(1);
    }

    int s = DefaultScreen(dpy);
    Window win = XCreateSimpleWindow(dpy, RootWindow(dpy, s), 10, 10, 660, 200, 1,
                                     BlackPixel(dpy, s), WhitePixel(dpy, s));
    XSelectInput(dpy, win, ExposureMask | KeyPressMask);
    XMapWindow(dpy, win);

#if defined(__APPLE_CC__)
    XStoreName(dpy, win, "Geeks3D.com - X11 window under Mac OS X (Lion)");
#else
    XStoreName(dpy, win, "Geeks3D.com - X11 window under Linux (Mint 10)");
#endif

    Atom WM_DELETE_WINDOW = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
    XSetWMProtocols(dpy, win, &WM_DELETE_WINDOW, 1);

    bool uname_ok = false;
    struct utsname sname;
    int ret = uname(&sname);
    if (ret != -1)
    {
        uname_ok = true;
    }

    XEvent e;
    while (1)
    {
        XNextEvent(dpy, &e);
        if (e.type == Expose)
        {
            int y_offset = 20;

#if defined(__APPLE_CC__)
            const char* s1 = "X11 test app under Mac OS X Lion";
#else
            const char* s1 = "X11 test app under Linux";
#endif

            const char* s2 = "(C)2012 Geeks3D.com";
            XDrawString(dpy, win, DefaultGC(dpy, s), 10, y_offset, s1, strlen(s1));
            y_offset += 20;
            XDrawString(dpy, win, DefaultGC(dpy, s), 10, y_offset, s2, strlen(s2));
            y_offset += 20;

            if (uname_ok)
            {
                char buf[256] = {0};

                sprintf(buf, "System information:");
                XDrawString(dpy, win, DefaultGC(dpy, s), 10, y_offset, buf, strlen(buf));
                y_offset += 15;

                sprintf(buf, "- System: %s", sname.sysname);
                XDrawString(dpy, win, DefaultGC(dpy, s), 10, y_offset, buf, strlen(buf));
                y_offset += 15;

                sprintf(buf, "- Release: %s", sname.release);
                XDrawString(dpy, win, DefaultGC(dpy, s), 10, y_offset, buf, strlen(buf));
                y_offset += 15;

                sprintf(buf, "- Version: %s", sname.version);
                XDrawString(dpy, win, DefaultGC(dpy, s), 10, y_offset, buf, strlen(buf));
                y_offset += 15;

                sprintf(buf, "- Machine: %s", sname.machine);
                XDrawString(dpy, win, DefaultGC(dpy, s), 10, y_offset, buf, strlen(buf));
                y_offset += 20;
            }


            XWindowAttributes  wa;
            XGetWindowAttributes(dpy, win, &wa);
            int width = wa.width;
            int height = wa.height;
            char buf[128]= {0};
            sprintf(buf, "Current window size: %dx%d", width, height);
            XDrawString(dpy, win, DefaultGC(dpy, s), 10, y_offset, buf, strlen(buf));
            y_offset += 20;
        }

        if (e.type == KeyPress)
        {
            char buf[128] = {0};
            KeySym keysym;
            int len = XLookupString(&e.xkey, buf, sizeof buf, &keysym, NULL);
            if (keysym == XK_Escape)
                break;
        }

        if ((e.type == ClientMessage) &&
                (static_cast<unsigned int>(e.xclient.data.l[0]) == WM_DELETE_WINDOW))
        {
//.........這裏部分代碼省略.........

//.........這裏部分代碼省略.........
    /* Save the display in the screen privates */
    g_pClipboardDisplay = pDisplay;

    ErrorF("winClipboardProc - XOpenDisplay () returned and "
           "successfully opened the display.\n");

    /* Get our connection number */
    iConnectionNumber = ConnectionNumber(pDisplay);

#ifdef HAS_DEVWINDOWS
    /* Open a file descriptor for the windows message queue */
    fdMessageQueue = open(WIN_MSG_QUEUE_FNAME, O_RDONLY);
    if (fdMessageQueue == -1) {
        ErrorF("winClipboardProc - Failed opening %s\n", WIN_MSG_QUEUE_FNAME);
        goto winClipboardProc_Done;
    }

    /* Find max of our file descriptors */
    iMaxDescriptor = max(fdMessageQueue, iConnectionNumber) + 1;
#else
    iMaxDescriptor = iConnectionNumber + 1;
#endif

    /* Create atoms */
    atomClipboard = XInternAtom(pDisplay, "CLIPBOARD", False);
    atomClipboardManager = XInternAtom(pDisplay, "CLIPBOARD_MANAGER", False);

    /* Create a messaging window */
    iWindow = XCreateSimpleWindow(pDisplay,
                                  DefaultRootWindow(pDisplay),
                                  1, 1,
                                  500, 500,
                                  0,
                                  BlackPixel(pDisplay, 0),
                                  BlackPixel(pDisplay, 0));
    if (iWindow == 0) {
        ErrorF("winClipboardProc - Could not create an X window.\n");
        goto winClipboardProc_Done;
    }

    XStoreName(pDisplay, iWindow, "xwinclip");

    /* Select event types to watch */
    if (XSelectInput(pDisplay, iWindow, PropertyChangeMask) == BadWindow)
        ErrorF("winClipboardProc - XSelectInput generated BadWindow "
               "on messaging window\n");

    /* Save the window in the screen privates */
    g_iClipboardWindow = iWindow;

    /* Create Windows messaging window */
    hwnd = winClipboardCreateMessagingWindow();

    /* Save copy of HWND in screen privates */
    g_hwndClipboard = hwnd;

    /* Assert ownership of selections if Win32 clipboard is owned */
    if (NULL != GetClipboardOwner()) {
        /* PRIMARY */
        iReturn = XSetSelectionOwner(pDisplay, XA_PRIMARY,
                                     iWindow, CurrentTime);
        if (iReturn == BadAtom || iReturn == BadWindow ||
            XGetSelectionOwner(pDisplay, XA_PRIMARY) != iWindow) {
            ErrorF("winClipboardProc - Could not set PRIMARY owner\n");
            goto winClipboardProc_Done;
        }

void windrawstring(pdfapp_t *app, int x, int y, char *s)
{
	XSetForeground(xdpy, xgc, BlackPixel(xdpy, DefaultScreen(xdpy)));
	XDrawString(xdpy, xwin, xgc, x, y, s, strlen(s));
}

//.........這裏部分代碼省略.........
    {
      // must be 16 bit
      attrib[ATTR_RED_IDX] = 4;
      attrib[ATTR_GREEN_IDX] = 4;
      attrib[ATTR_BLUE_IDX] = 4;
    }

    attrib[ATTR_DEPTH_IDX] = tdepthbits; // default to 24 depth
    attrib[ATTR_STENCIL_IDX] = tstencilbits;

    visinfo = qglXChooseVisual(dpy, scrnum, attrib);
    if (!visinfo)
    {
      continue;
    }

    CL_RefPrintf( PRINT_ALL, "Using %d/%d/%d Color bits, %d depth, %d stencil display.\n", 
               attrib[ATTR_RED_IDX], attrib[ATTR_GREEN_IDX], attrib[ATTR_BLUE_IDX],
               attrib[ATTR_DEPTH_IDX], attrib[ATTR_STENCIL_IDX]);

    glConfig.colorBits = tcolorbits;
    glConfig.depthBits = tdepthbits;
    glConfig.stencilBits = tstencilbits;
    break;
  }

  if (!visinfo)
  {
    CL_RefPrintf( PRINT_ALL, "Couldn't get a visual\n" );
    return RSERR_INVALID_MODE;
  }

  /* window attributes */
  attr.background_pixel = BlackPixel(dpy, scrnum);
  attr.border_pixel = 0;
  attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
  attr.event_mask = X_MASK;
  if (vidmode_active)
  {
    mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | 
           CWEventMask | CWOverrideRedirect;
    attr.override_redirect = True;
    attr.backing_store = NotUseful;
    attr.save_under = False;
  } else
    mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;

  win = XCreateWindow(dpy, root, 0, 0, 
                      actualWidth, actualHeight, 
                      0, visinfo->depth, InputOutput,
                      visinfo->visual, mask, &attr);

  XStoreName( dpy, win, WINDOW_CLASS_NAME );

  /* GH: Don't let the window be resized */
  sizehints.flags = PMinSize | PMaxSize;
  sizehints.min_width = sizehints.max_width = actualWidth;
  sizehints.min_height = sizehints.max_height = actualHeight;

  XSetWMNormalHints( dpy, win, &sizehints );

  XMapWindow( dpy, win );

  if (vidmode_active)
    XMoveWindow(dpy, win, 0, 0);

// real construction (Init() must have been called before!)
bool wxWindowX11::Create(wxWindow *parent, wxWindowID id,
                      const wxPoint& pos,
                      const wxSize& size,
                      long style,
                      const wxString& name)
{
    wxCHECK_MSG( parent, FALSE, wxT("can't create wxWindow without parent") );

    CreateBase(parent, id, pos, size, style, wxDefaultValidator, name);

    parent->AddChild(this);

    Display *xdisplay = (Display*) wxGlobalDisplay();
    int xscreen = DefaultScreen( xdisplay );
    Visual *xvisual = DefaultVisual( xdisplay, xscreen );
    Colormap cm = DefaultColormap( xdisplay, xscreen );

    m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
    m_backgroundColour.CalcPixel( (WXColormap) cm );

    m_foregroundColour = *wxBLACK;
    m_foregroundColour.CalcPixel( (WXColormap) cm );

    Window xparent = (Window) parent->GetClientAreaWindow();

    // Add window's own scrollbars to main window, not to client window
    if (parent->GetInsertIntoMain())
    {
        // wxLogDebug( "Inserted into main: %s", GetName().c_str() );
        xparent = (Window) parent->GetMainWindow();
    }

    // Size (not including the border) must be nonzero (or a Value error results)!
    // Note: The Xlib manual doesn't mention this restriction of XCreateWindow.
    wxSize size2(size);
    if (size2.x <= 0)
        size2.x = 20;
    if (size2.y <= 0)
        size2.y = 20;

    wxPoint pos2(pos);
    if (pos2.x == -1)
        pos2.x = 0;
    if (pos2.y == -1)
        pos2.y = 0;

#if wxUSE_TWO_WINDOWS
    bool need_two_windows =
        ((( wxSUNKEN_BORDER | wxRAISED_BORDER | wxSIMPLE_BORDER | wxHSCROLL | wxVSCROLL ) & m_windowStyle) != 0);
#else
    bool need_two_windows = FALSE;
#endif

#if wxUSE_NANOX
    long xattributes = 0;
#else
    XSetWindowAttributes xattributes;
    long xattributes_mask = 0;

    xattributes_mask |= CWBackPixel;
    xattributes.background_pixel = m_backgroundColour.GetPixel();

    xattributes_mask |= CWBorderPixel;
    xattributes.border_pixel = BlackPixel( xdisplay, xscreen );

    xattributes_mask |= CWEventMask;
#endif

    if (need_two_windows)
    {
#if wxUSE_NANOX
        long backColor, foreColor;
        backColor = GR_RGB(m_backgroundColour.Red(), m_backgroundColour.Green(), m_backgroundColour.Blue());
        foreColor = GR_RGB(m_foregroundColour.Red(), m_foregroundColour.Green(), m_foregroundColour.Blue());

        Window xwindow = XCreateWindowWithColor( xdisplay, xparent, pos2.x, pos2.y, size2.x, size2.y,
                                    0, 0, InputOutput, xvisual, backColor, foreColor);
        XSelectInput( xdisplay, xwindow,
          GR_EVENT_MASK_CLOSE_REQ | ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask |
          ButtonMotionMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask |
          KeymapStateMask | FocusChangeMask | ColormapChangeMask | StructureNotifyMask |
                      PropertyChangeMask );

#else
        // Normal X11
        xattributes.event_mask =
            ExposureMask | StructureNotifyMask | ColormapChangeMask;

        Window xwindow = XCreateWindow( xdisplay, xparent, pos2.x, pos2.y, size2.x, size2.y,
            0, DefaultDepth(xdisplay,xscreen), InputOutput, xvisual, xattributes_mask, &xattributes );

#endif

        XSetWindowBackgroundPixmap( xdisplay, xwindow, None );

        m_mainWindow = (WXWindow) xwindow;
        wxAddWindowToTable( xwindow, (wxWindow*) this );

        XMapWindow( xdisplay, xwindow );
//.........這裏部分代碼省略.........

int main(int argc, char **argv)
{
  FILE *fp;
  int x_1,y_1,x_2,y_2,x_3,y_3;
  char a;
  int i,j;
  int outside;
  int ButtonPressed = 0;
  int temp_x, temp_y;
  pixel_count = 0;
  for(i=0;i<302;i++)
  {              
    for(j=0;j<302;j++)  
    {          
      cost[i][j] = 9999; 
    } 
  }

  if( (display_ptr = XOpenDisplay(display_name)) == NULL )
    { printf("Could not open display. \n"); exit(-1);}
  printf("Connected to X server  %s\n", XDisplayName(display_name) );
  screen_num = DefaultScreen( display_ptr );
  screen_ptr = DefaultScreenOfDisplay( display_ptr );
  color_map  = XDefaultColormap( display_ptr, screen_num );
  display_width  = DisplayWidth( display_ptr, screen_num );
  display_height = DisplayHeight( display_ptr, screen_num );

  printf("Width %d, Height %d, Screen Number %d\n", 
           display_width, display_height, screen_num);
  border_width = 10;
  win_x = 0; win_y = 0;
  win_width = display_width;
  win_height = display_height; 
  
  win= XCreateSimpleWindow( display_ptr, RootWindow( display_ptr, screen_num),
                            win_x, win_y, win_width, win_height, border_width,
                            BlackPixel(display_ptr, screen_num),
                            WhitePixel(display_ptr, screen_num) );
  size_hints = XAllocSizeHints();
  wm_hints = XAllocWMHints();
  class_hints = XAllocClassHint();
  if( size_hints == NULL || wm_hints == NULL || class_hints == NULL )
    { printf("Error allocating memory for hints. \n"); exit(-1);}

  size_hints -> flags = PPosition | PSize | PMinSize  ;
  size_hints -> min_width = 60;
  size_hints -> min_height = 60;

  XStringListToTextProperty( &win_name_string,1,&win_name);
  XStringListToTextProperty( &icon_name_string,1,&icon_name);
  
  wm_hints -> flags = StateHint | InputHint ;
  wm_hints -> initial_state = NormalState;
  wm_hints -> input = False;

  class_hints -> res_name = "x_use_example";
  class_hints -> res_class = "examples";

  XSetWMProperties( display_ptr, win, &win_name, &icon_name, argv, argc,
                    size_hints, wm_hints, class_hints );

  XSelectInput( display_ptr, win, 
            ExposureMask | StructureNotifyMask | ButtonPressMask );
  
  XMapWindow( display_ptr, win );

  XFlush(display_ptr);
  gc_red = XCreateGC( display_ptr, win, valuemask, &gc_red_values);
  XSetLineAttributes( display_ptr, gc_red, 3, LineSolid, CapRound, JoinRound);
  if( XAllocNamedColor( display_ptr, color_map, "red", 
      &tmp_color1, &tmp_color2 ) == 0 )
    {printf("failed to get color red\n"); exit(-1);} 
  else
    XSetForeground( display_ptr, gc_red, tmp_color1.pixel );
  gc_black = XCreateGC( display_ptr, win, valuemask, &gc_black_values);
  XSetLineAttributes(display_ptr, gc_black, 3, LineSolid,CapRound, JoinRound);
  if( XAllocNamedColor( display_ptr, color_map, "black", 
      &tmp_color1, &tmp_color2 ) == 0 )
    {printf("failed to get color black\n"); exit(-1);} 
  else
    XSetForeground( display_ptr, gc_black, tmp_color1.pixel );
  gc_blue = XCreateGC( display_ptr, win, valuemask, &gc_blue_values);
  XSetLineAttributes(display_ptr, gc_blue, 3, LineSolid,CapRound, JoinRound);
  if( XAllocNamedColor( display_ptr, color_map, "blue", 
      &tmp_color1, &tmp_color2 ) == 0 )
    {printf("failed to get blue yellow\n"); exit(-1);} 
  else
    XSetForeground( display_ptr, gc_blue, tmp_color1.pixel );
  gc_white = XCreateGC( display_ptr, win, valuemask, &gc_white_values);
  XSetLineAttributes(display_ptr, gc_white, 3, LineSolid,CapRound, JoinRound);
  if( XAllocNamedColor( display_ptr, color_map, "white", 
      &tmp_color1, &tmp_color2 ) == 0 )
    {printf("failed to get color white\n"); exit(-1);} 
  else
    XSetForeground( display_ptr, gc_white, tmp_color1.pixel );

  if ( argc != 2 ) 
  {
      printf( "Usage: %s filename.extension \n", argv[0] );
      exit(-1);
//.........這裏部分代碼省略.........

unsigned long QXlibScreen::blackPixel()
{
    return BlackPixel(mDisplay->nativeDisplay(), mScreen);
}

 unsigned long XApplication::GetBlackColor() const
 {
   return BlackPixel(this->display, this->screen);
 }

void
WindowDevice::WINOPEN(const char *_title, int _xLoc, int _yLoc, int _width, int _height)
{
    // set the WindowDevices title, height, wdth, xLoc and yLoc
    strcpy(title, _title);

    height = _height;
    width = _width;  
    xLoc = _xLoc;
    yLoc = _yLoc;

#ifdef _UNIX
    if (winOpen == 0) { // we must close the old window
	XFreeGC(theDisplay, theGC);
	XDestroyWindow(theDisplay, theWindow); 
    }

    // define the position and size of the window - only hints
    hints.x = _xLoc;
    hints.y = _yLoc;
    hints.width = _width;
    hints.height = _height;
    hints.flags = PPosition | PSize;

    // set the defualt foreground and background colors
    XVisualInfo visual; 
    visual.visual = 0;
    int depth = DefaultDepth(theDisplay, theScreen);

    if (background == 0) {
      if (XMatchVisualInfo(theDisplay, theScreen, depth, PseudoColor, &visual) == 0) {
	  foreground = BlackPixel(theDisplay, theScreen);
	  background = WhitePixel(theDisplay, theScreen);    

      } else {
	foreground = 0;
	background = 255;
      }
    }

    // now open a window
    theWindow = XCreateSimpleWindow(theDisplay,RootWindow(theDisplay,0),
				    hints.x, hints.y,
				    hints.width,hints.height,4,
				    foreground, background);

    if (theWindow == 0) {
	opserr << "WindowDevice::WINOPEN() - could not open a window\n";
	exit(-1);
    }	
    
    XSetStandardProperties(theDisplay, theWindow, title, title, None, 0, 0, &hints);
    
    // create a graphical context
    theGC = XCreateGC(theDisplay, theWindow, 0, 0);

    // if we were unable to get space for our colors
    // we must create and use our own colormap
    if (colorFlag == 3 ) {

      // create the colormap if the 1st window
      if (numWindowDevice == 1) {
	int fail = false;
	//	XMatchVisualInfo(theDisplay, theScreen, depth, PseudoColor, &visual);
	if (XMatchVisualInfo(theDisplay, theScreen, depth, PseudoColor, &visual) == 0) {
	  opserr << "WindowDevice::initX11() - could not get a visual for PseudoColor\n";
	  opserr << "Colors diplayed will be all over the place\n";
	  cmap = DefaultColormap(theDisplay, theScreen);
	  fail = true;
        } else {
	  opserr << "WindowDevice::WINOPEN have created our own colormap, \n";
	  opserr << "windows may change color as move mouse from one window to\n";
	  opserr << "another - depends on your video card to use another colormap\n\n";	

	  cmap = XCreateColormap(theDisplay,theWindow,
				 visual.visual, AllocAll);
	}


	/*
	cmap = XCreateColormap(theDisplay,theWindow,
			   DefaultVisual(theDisplay,0),AllocAll);
	*/

	if (cmap == 0) {
	    opserr << "WindowDevice::initX11() - could not get a new color table\n";
	    exit(-1);
	}	    

	// we are going to try to allocate 256 new colors -- need 8 planes for this
	depth = DefaultDepth(theDisplay, theScreen);
	if (depth < 8) {
	    opserr << "WindowDevice::initX11() - needed at least 8 planes\n";
	    exit(-1);
	}	    
	if (fail == false) {
	  int cnt = 0;
	  for (int red = 0; red < 8; red++) {
	    for (int green = 0; green < 8; green++) {
		for (int blue = 0; blue < 4; blue++) {
//.........這裏部分代碼省略.........

/* This function should be written using GTK+ primitives*/
static void
gstroke_invisible_window_init (GtkWidget *widget)
{
  XSetWindowAttributes w_attr;
  XWindowAttributes orig_w_attr;
  unsigned long mask, col_border, col_background;
  unsigned int border_width;
  XSizeHints hints;
  Display *disp = GDK_WINDOW_XDISPLAY(gtk_widget_get_window(widget));
  Window wind = gdk_x11_window_get_xid(gtk_widget_get_window(widget));
  int screen = DefaultScreen (disp);

	if (!gstroke_draw_strokes())
		return;

  gstroke_disp = disp;

  /* X server should save what's underneath */
  XGetWindowAttributes (gstroke_disp, wind, &orig_w_attr);
  hints.x = orig_w_attr.x;
  hints.y = orig_w_attr.y;
  hints.width = orig_w_attr.width;
  hints.height = orig_w_attr.height;
  mask = CWSaveUnder;
  w_attr.save_under = True;

  /* inhibit all the decorations */
  mask |= CWOverrideRedirect;
  w_attr.override_redirect = True;

  /* Don't set a background, transparent window */
  mask |= CWBackPixmap;
  w_attr.background_pixmap = None;

  /* Default input window look */
  col_background = WhitePixel (gstroke_disp, screen);

  /* no border for the window */
#if 0
  border_width = 5;
#endif
  border_width = 0;

  col_border = BlackPixel (gstroke_disp, screen);

  gstroke_window = XCreateSimpleWindow (gstroke_disp, wind,
                                        0, 0,
                                        hints.width - 2 * border_width,
                                        hints.height - 2 * border_width,
                                        border_width,
                                        col_border, col_background);

  gstroke_gc = XCreateGC (gstroke_disp, gstroke_window, 0, NULL);

  XSetFunction (gstroke_disp, gstroke_gc, GXinvert);

  XChangeWindowAttributes (gstroke_disp, gstroke_window, mask, &w_attr);

  XSetLineAttributes (gstroke_disp, gstroke_gc, 2, LineSolid,
                      CapButt, JoinMiter);
  XMapRaised (gstroke_disp, gstroke_window);

#if 0
  /*FIXME: is this call really needed? If yes, does it need the real
    argc and argv? */
  hints.flags = PPosition | PSize;
  XSetStandardProperties (gstroke_disp, gstroke_window, "gstroke_test", NULL,
                          (Pixmap)NULL, NULL, 0, &hints);


  /* Receive the close window client message */
  {
    /* FIXME: is this really needed? If yes, something should be done
       with wmdelete...*/
    Atom wmdelete = XInternAtom (gstroke_disp, "WM_DELETE_WINDOW",
                                 False);
    XSetWMProtocols (gstroke_disp, gstroke_window, &wmdelete, True);
  }
#endif
}

  int main (void)
  {
    int i;
  
    int allocateOK;
  
    ximg = NULL;
  
  	
    d = XOpenDisplay (NULL);
  
    if (!d)
      fputs ("Couldn't open display\n", stderr), exit (1);
  
    screen = DefaultScreen (d);
    gc = DefaultGC (d, screen);
  
    /* Find a visual */
  
    vis.screen = screen;
    vlist = XGetVisualInfo (d, VisualScreenMask, &vis, &match);
  
    if (!vlist)
      fputs ("No matched visuals\n", stderr), exit (1);
  
    vis = vlist[0];
    XFree (vlist);
		
  	// That's not a fair comparison colormap_size is depth in bits!
    // if (vis.colormap_size < COLORS)
      // printf("Colormap is too small: %i.\n",vis.colormap_size); // , exit (1);
		// printf("Colour depth: %i\n",vis.colormap_size);
		// No way this number means nothing!  It is 64 for 16-bit truecolour and 256 for 8-bit!
  
    win = XCreateSimpleWindow (d, DefaultRootWindow (d),
			       0, 0, WIN_W, WIN_H, 0,
			       WhitePixel (d, screen), BlackPixel (d, screen));
  
	  int xclass=get_xvisinfo_class(vis);
		// printf("class = %i\n",xclass);
	  stylee = ( vis.depth > 8 ? styleeTrueColor : styleePrivate );
	  // printf("stylee=%i\n",stylee);
  
    if ( get_xvisinfo_class(vis) % 2 == 1) {	/* The odd numbers can redefine colors */
  
			  // printf("%i\n",get_xvisinfo_class(vis));
	  	
      colormap = DefaultColormap (d, screen);
		  Visual *defaultVisual=DefaultVisual(d,screen);
	  	
      /* Allocate cells */
      allocateOK = (XAllocColorCells (d, colormap, 1,
							      NULL, 0, color, COLORS) != 0);

			printf("Allocated OK? %i\n",allocateOK);
			
      if (allocateOK) {
  
			  // printf("Allocated OK\n");
        // This doesn't work for installed colormap!
  
        /* Modify the colorcells */
        for (i = 0; i < COLORS; i++)
				  xrgb[i].pixel = color[i];
  
        XStoreColors (d, colormap, xrgb, COLORS);
  
		  } else {

			  colormap = XCreateColormap(d,win,defaultVisual,AllocNone);
		  	
    	  // redocolors();
					  	
      }
  
		  // black = XBlackPixel(d,screen);
		  // white = XWhitePixel(d,screen);
  
			XAllocColorCells(d,colormap,1,0,0,color,colors);
			XSetWindowColormap(d,win,colormap);

    } else if ( get_xvisinfo_class(vis) == TrueColor) {
      colormap = DefaultColormap (d, screen);
					  // printf("TrueColor %i = %i\n",xclass,TrueColor);
      /* This will lookup the color and sets the xrgb[i].pixel value */
      // for (i = 0; i < COLORS; i++)
        // XAllocColor (d, colormap, &xrgb[i]);
    } else
      fprintf (stderr, "Not content with visual class %d.\n",
	       get_xvisinfo_class(vis) ), exit (1);
  
    /* Find out if MITSHM is supported and useable */
    printf ("MITSHM: ");
  
    if (XShmQueryVersion (d, &mitshm_major_code,
			  &mitshm_minor_code, &shared_pixmaps)) {
      int (*handler) (Display *, XErrorEvent *);
      ximg = XShmCreateImage (d, vis.visual,
			     vis.depth, XShmPixmapFormat (d),
			     NULL, &shminfo, WIN_W, WIN_H);
//.........這裏部分代碼省略.........

int XMessageBox::show()
{
   if (mDisplay == NULL)
      return -1;

   int retVal = 0;
   retVal = loadFont();
   if (retVal < 0)
      return retVal;

   // set the maximum window dimensions
   mScreenWidth = DisplayWidth(mDisplay, DefaultScreen(mDisplay));
   mScreenHeight = DisplayHeight(mDisplay, DefaultScreen(mDisplay));
   mMaxWindowWidth = min(mScreenWidth, MessageBox_MaxWinWidth);
   mMaxWindowHeight = min(mScreenHeight, MessageBox_MaxWinHeight);

   // split the message into a vector of lines
   splitMessage();

   // set the dialog dimensions
   setDimensions();

   mWin = XCreateSimpleWindow(
      mDisplay,
      DefaultRootWindow(mDisplay),
      (mScreenWidth - mMBWidth) / 2,  (mScreenHeight - mMBHeight) / 2,
      mMBWidth, mMBHeight,
      1, 
      BlackPixel(mDisplay, DefaultScreen(mDisplay)),
      WhitePixel(mDisplay, DefaultScreen(mDisplay)));

   mGC = XCreateGC(mDisplay, mWin, 0, 0);

   XSetFont(mDisplay, mGC, mFS->fid);

   // set input mask
   XSelectInput(mDisplay, mWin, 
      ExposureMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask);

   // set wm protocols in case they hit X
   Atom wm_delete_window = 
      XInternAtom(mDisplay, "WM_DELETE_WINDOW", False);
   Atom wm_protocols = 
      XInternAtom(mDisplay, "WM_PROTOCOLS", False);
   XSetWMProtocols (mDisplay, mWin, &wm_delete_window, 1);
   // set pop up dialog hint
   XSetTransientForHint(mDisplay, mWin, mWin);
   
   // set title
   XTextProperty wtitle;
   wtitle.value = (unsigned char *)mTitle;
   wtitle.encoding = XA_STRING;
   wtitle.format = 8;
   wtitle.nitems = strlen(mTitle);
   XSetWMName(mDisplay, mWin, &wtitle);

   // show window
   XMapWindow(mDisplay, mWin);
   // move it in case some bozo window manager repositioned it
   XMoveWindow(mDisplay, mWin, 
      (mScreenWidth - mMBWidth) / 2,  (mScreenHeight - mMBHeight) / 2);
   // raise it to top
   XRaiseWindow(mDisplay, mWin);

   XMessageBoxButton* clickedButton = NULL;
   XEvent event;
   Vector<XMessageBoxButton>::iterator iter;
   bool done = false;
   while (!done)
   {
      XNextEvent(mDisplay, &event);
      switch (event.type)
      {
         case Expose:
            repaint();
            break;
         case MotionNotify:
            for (iter = mButtons.begin(); iter != mButtons.end(); ++iter)
               iter->setMouseCoordinates(event.xmotion.x, event.xmotion.y);
            break;
         case ButtonPress:
            for (iter = mButtons.begin(); iter != mButtons.end(); ++iter)
            {
               if (iter->pointInRect(event.xbutton.x, event.xbutton.y))
               {
                  iter->setMouseDown(true);
                  iter->setMouseCoordinates(event.xbutton.x, event.xbutton.y);
                  break;
               }
            }
            break;
         case ButtonRelease:
            for (iter = mButtons.begin(); iter != mButtons.end(); ++iter)
            {
               if (iter->pointInRect(event.xbutton.x, event.xbutton.y) &&
                  iter->isMouseDown())
               {
                  // we got a winner!
                  clickedButton = iter;
                  done = true;
//.........這裏部分代碼省略.........

void
drawswarm(Window win)
{
	swarmstruct *sp = &swarms[screen];
	int         b;

	/* <=- Wasp -=> */
	/* Age the arrays. */
	sp->wx[2] = sp->wx[1];
	sp->wx[1] = sp->wx[0];
	sp->wy[2] = sp->wy[1];
	sp->wy[1] = sp->wy[0];
	/* Accelerate */
	sp->wxv += balance_rand(WASPACC);
	sp->wyv += balance_rand(WASPACC);

	/* Speed Limit Checks */
	if (sp->wxv > WASPVEL)
		sp->wxv = WASPVEL;
	if (sp->wxv < -WASPVEL)
		sp->wxv = -WASPVEL;
	if (sp->wyv > WASPVEL)
		sp->wyv = WASPVEL;
	if (sp->wyv < -WASPVEL)
		sp->wyv = -WASPVEL;

	/* Move */
	sp->wx[0] = sp->wx[1] + sp->wxv;
	sp->wy[0] = sp->wy[1] + sp->wyv;

	/* Bounce Checks */
	if ((sp->wx[0] < sp->border) || (sp->wx[0] > sp->width - sp->border - 1)) {
		sp->wxv = -sp->wxv;
		sp->wx[0] += sp->wxv;
	}
	if ((sp->wy[0] < sp->border) || (sp->wy[0] > sp->height - sp->border - 1)) {
		sp->wyv = -sp->wyv;
		sp->wy[0] += sp->wyv;
	}
	/* Don't let things settle down. */
	sp->xv[LRAND() % sp->beecount] += balance_rand(3);
	sp->yv[LRAND() % sp->beecount] += balance_rand(3);

	/* <=- Bees -=> */
	for (b = 0; b < sp->beecount; b++) {
		int         distance, dx, dy;

		/* Age the arrays. */
		X(2, b) = X(1, b);
		X(1, b) = X(0, b);
		Y(2, b) = Y(1, b);
		Y(1, b) = Y(0, b);

		/* Accelerate */
		dx = sp->wx[1] - X(1, b);
		dy = sp->wy[1] - Y(1, b);
		distance = abs(dx) + abs(dy);	/* approximation */
		if (distance == 0)
			distance = 1;
		sp->xv[b] += (dx * BEEACC) / distance;
		sp->yv[b] += (dy * BEEACC) / distance;

		/* Speed Limit Checks */
		if (sp->xv[b] > BEEVEL)
			sp->xv[b] = BEEVEL;
		if (sp->xv[b] < -BEEVEL)
			sp->xv[b] = -BEEVEL;
		if (sp->yv[b] > BEEVEL)
			sp->yv[b] = BEEVEL;
		if (sp->yv[b] < -BEEVEL)
			sp->yv[b] = -BEEVEL;

		/* Move */
		X(0, b) = X(1, b) + sp->xv[b];
		Y(0, b) = Y(1, b) + sp->yv[b];

		/* Fill the segment lists. */
		sp->segs[b].x1 = X(0, b);
		sp->segs[b].y1 = Y(0, b);
		sp->segs[b].x2 = X(1, b);
		sp->segs[b].y2 = Y(1, b);
		sp->old_segs[b].x1 = X(1, b);
		sp->old_segs[b].y1 = Y(1, b);
		sp->old_segs[b].x2 = X(2, b);
		sp->old_segs[b].y2 = Y(2, b);
	}

	XSetForeground(dsp, Scr[screen].gc, BlackPixel(dsp, screen));
	XDrawLine(dsp, win, Scr[screen].gc,
		  sp->wx[1], sp->wy[1], sp->wx[2], sp->wy[2]);
	XDrawSegments(dsp, win, Scr[screen].gc, sp->old_segs, sp->beecount);

	XSetForeground(dsp, Scr[screen].gc, WhitePixel(dsp, screen));
	XDrawLine(dsp, win, Scr[screen].gc,
		  sp->wx[0], sp->wy[0], sp->wx[1], sp->wy[1]);
	if (!mono && Scr[screen].npixels > 2) {
		XSetForeground(dsp, Scr[screen].gc, Scr[screen].pixels[sp->pix]);
		if (++sp->pix >= Scr[screen].npixels)
			sp->pix = 0;
	}
//.........這裏部分代碼省略.........