CountRefreshRates

CountRefreshRates 〔BlitzLLVM〕

Command Index · BlitzBasic · Display

CountRefreshRates:Int32 display:Int32, width:Int32, height:Int32

Parameter	Mode	Type	Default	Description
display	In	Int32	required	The display number, from 1 to CountDisplays.
width	In	Int32	required	The width in pixels of the size.
height	In	Int32	required	The height in pixels of the size.

Returns: The number of refresh rates, or 0 if the display does not exist or does not have the size.

Description

〔BlitzLLVM〕 This command does not exist in the original Blitz products. BlitzLLVM adds it.

The number of refresh rates a display supports at a size. A size is often available at 60 Hz and at higher rates such as 120 or 144 Hz. Use RefreshRateAt to get them. This is a BlitzLLVM extension: the originals have no way to ask for more than the main display.

Differences

• A display number that does not exist gives 0 (an empty text for the name) instead of stopping the program, because a display can be unplugged while the program runs.

Examples

d = PrimaryDisplay()
w = DisplayWidth(d)
h = DisplayHeight(d)
For r = 1 To CountRefreshRates(d, w, h)
	Print w + " x " + h + " is possible at " + RefreshRateAt(d, w, h, r) + " Hz"
Next
WaitKey

Related Commands

CountDisplayModes 〔BlitzLLVM〕, CountDisplays 〔BlitzLLVM〕, CountGfxDrivers, CountGfxModes, DisplayModeRefreshRate 〔BlitzLLVM〕, DisplayRefreshRate 〔BlitzLLVM〕, RefreshRateAt 〔BlitzLLVM〕

Command Index · BlitzBasic · Display