RandomData()

Syntax

RandomData(*Buffer, Length)

Fills the specified memory buffer with random data.

Parameters

*Buffer	The memory address of the buffer to fill.
Length	The size of the buffer to fill.

Return value

None.

Remarks

This command uses the same random seed as the Random() command. RandomSeed() may be used to change the random number seed.

Note: This command uses a pseudorandom number generator which is very fast and produces randomly looking output but it is not strong enough for cryptographic purposes. The slower CryptRandomData() command can be used if more secure random number generation is required.

Example

  ; Create an image with random content
  ;
  CreateImage(0, 200, 200)
  If StartDrawing(ImageOutput(0))
    *Buffer = DrawingBuffer()
    Pitch   = DrawingBufferPitch()

    RandomData(*Buffer, Pitch*200)

    StopDrawing()
  EndIf

  OpenWindow(0, 0, 0, 200, 200, "Random Image", #PB_Window_SystemMenu | #PB_Window_ScreenCentered)
  ImageGadget(0, 0, 0, 200, 200, ImageID(0))

  Repeat
  Until WaitWindowEvent() = #PB_Event_CloseWindow

See Also

RandomSeed(), Random(), CryptRandomData()

Supported OS

All