The following methods all return information based on the screen (which can be a virtual desktop or a normal desktop) and the colors of the desktop.
you use has a name associated with it. To get the name, use the
$name = $widget->screen;
The name returned will be formatted as
For more details refer to Chapter 11.
The screen height and
width is really just the resolution of the screen. Sometimes you
might need information to determine how large a window can fit on a
user’s display. To get the height and width of the screen in
pixels, use the
$height = $widget->screenheight; $width = $widget->screenwidth;
If your display dimensions are 1024x768,
screenheight returns 768 and
screenwidth returns 1024. If you prefer to get the
size of the screen in millimeters, use
$heightmm = $widget->screenmmheight; $widthmm = $widget->screenmmwidth;
The same resolution, 1024x768, returns 203 millimeters as the height and 270 millimeters as the width.
The number of cells in the default
colormap is retrieved by using
$count = $widget->screencells;
To determine the number of bits per
pixel your screen has, use the
$depth = $widget->screendepth;
The type of color is defined by one of the