mirror of
https://github.com/gwm17/glfw.git
synced 2024-11-26 20:28:49 -05:00
106 lines
2.6 KiB
Plaintext
106 lines
2.6 KiB
Plaintext
/*!
|
|
|
|
@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
|
|
|
|
*/
|