glfw/docs/monitor.dox

/*!

@page monitor Multi-monitor guide

@tableofcontents


@section monitor_objects Monitor objects

The @ref GLFWmonitor object represents a currently connected monitor.


@section monitor_monitors Retrieving monitors

The primary monitor is returned by @ref glfwGetPrimaryMonitor.  It is usually
the user's preferred monitor and the one with global UI elements like task bar
or menu bar.

@code
GLFWmonitor* primary = glfwGetPrimaryMonitor();
@endcode

You can retrieve all currently connected monitors with @ref glfwGetMonitors.

@code
int count;
GLFWmonitor** monitors = glfwGetMonitors(&count);
@endcode


@section monitor_modes Retrieving video modes

Although GLFW generally does a good job at selecting a suitable video
mode for you when you open a full screen window, it is sometimes useful to
know exactly which modes are available on a certain system. For example,
you may want to present the user with a list of video modes to select
from. To get a list of available video modes, you can use the function
@ref glfwGetVideoModes.

@code
int count;
GLFWvidmode* modes = glfwGetVideoModes(monitor, &count);
@endcode

To get the current video mode of a monitor call @ref glfwGetVideoMode.

@code
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
@endcode


@section monitor_size Monitor physical size

The physical size in millimetres of a monitor, or an approximation of it, can be
retrieved with @ref glfwGetMonitorPhysicalSize.  

@code
int widthMM, heightMM;
glfwGetMonitorPhysicalSize(monitor, &widthMM, &heightMM);
@endcode

This can, for example, be used together with the current video mode to calculate
the DPI of a monitor. 

@code
const double dpi = mode->width / (widthMM / 25.4);
@endcode


@section monitor_name Monitor name

The name of a monitor is returned by @ref glfwGetMonitorName.

@code
const char* name = glfwGetMonitorName(monitor);
@endcode

The monitor name is a regular C string using the UTF-8 encoding.  Note that
monitor names are not guaranteed to be unique.                        


@section monitor_gamma Monitor gamma ramp

The gamma ramp of a monitor can be set with @ref glfwSetGammaRamp, which accepts
a monitor handle and a pointer to a @ref GLFWgammaramp structure.

@code
glfwSetGammaRamp(monitor, &ramp);
@endcode

The current gamma ramp for a monitor is returned by @ref glfwGetGammaRamp.

@code
const GLFWgammaramp* ramp = glfwGetGammaRamp(monitor);
@endcode

If you wish to set a regular gamma ramp, you can have GLFW calculate it for you
from the desired exponent with @ref glfwSetGamma, which in turn calls @ref
glfwSetGammaRamp with the resulting ramp.

@code
glfwSetGamma(monitor, 1.0);
@endcode

*/