SCREENINFO
Retrieves information about current video mode or the desktop.
Syntax:
declare sub Screeninfo ( byref w as long = 0, byref h as long = 0, byref depth as long = 0, byref bpp as long = 0, byref pitch as long = 0, byref rate as long = 0, byref driver as string = "" )
declare sub Screeninfo ( byref w as longint, byref h as longint, byref depth as longint = 0, byref bpp as longint = 0, byref pitch as longint = 0, byref rate as longint = 0, byref driver as string = "" )
declare sub Screeninfo ( byref w as longint, byref h as longint, byref depth as longint = 0, byref bpp as longint = 0, byref pitch as longint = 0, byref rate as longint = 0, byref driver as string = "" )
Usage:
in the LONG (or INTEGER<32>) version of the sub:
Screeninfo [ w ] [, [ h ] [, [ depth ] [, [ bpp ] [, [ pitch ] [, [ rate ] [, driver ]]]]]]
in the LONGINT (or INTEGER<64>) version of the sub:
Screeninfo w , h [, [ depth ] [, [ bpp ] [, [ pitch ] [, [ rate ] [, driver ]]]]]
Parameters:
w
Width.
h
Height.
depth
Color depth in bits.
bpp
Bytes per pixel.
pitch
Bytes per scan line.
rate
Refresh rate.
driver
Driver name.
Description:
This function can be useful to get current mode informations like graphics driver name, color depth, screen size and more.
If Screeninfo is called when no graphics mode is set, it returns the information about the desktop.
Here's a description of available fields:
If Screeninfo is called when no graphics mode is set, it returns the information about the desktop.
Here's a description of available fields:
| w | Width of the screen in pixels |
| h | Height of the screen in pixels |
| depth | Current pixel format bits per pixel: this can be 1, 2, 4, 8, 16, or 32 |
| bpp | Bytes per pixel |
| pitch | Size of a framebuffer row in bytes |
| rate | Current refresh rate, or 0 if unknown |
| driver | Name of current graphics driver in use, like DirectX (Direct2D added on new systems) or X11 |
Examples:
Dim w As Long, h As Long
Dim depth As Long
Dim driver_name As String
Screen 15, 32
' Obtain info about current mode
ScreenInfo w, h, depth,,,,driver_name
Print Str(w) + "x" + Str(h) + "x" + Str(depth);
Print " using " + driver_name + " driver"
Sleep
' Quit graphics mode and obtain info about desktop
Screen 0
ScreenInfo w, h, depth
Print "Desktop running at " + Str(w) + "x" + Str(h) + "x" + Str(depth);
Dim depth As Long
Dim driver_name As String
Screen 15, 32
' Obtain info about current mode
ScreenInfo w, h, depth,,,,driver_name
Print Str(w) + "x" + Str(h) + "x" + Str(depth);
Print " using " + driver_name + " driver"
Sleep
' Quit graphics mode and obtain info about desktop
Screen 0
ScreenInfo w, h, depth
Print "Desktop running at " + Str(w) + "x" + Str(h) + "x" + Str(depth);
- Before fbc 1.08.0:
Syntax:
declare sub Screeninfo ( byref w as integer = 0, byref h as integer = 0, byref depth as integer = 0, byref bpp as integer = 0, byref pitch as integer = 0, byref rate as integer = 0, byref driver as string = "" )
Usage:
Screeninfo [ w ] [, [ h ] [, [ depth ] [ , [ bpp ] [ , [ pitch ] [ , [ rate ] [, driver ]]]]]]
Dialect Differences:
- Not available in the -lang qb dialect unless referenced with the alias __Screeninfo.
Differences from QB:
- New to FreeBASIC
See also:
Back to Screen Functions
