PureBasic Forums - English

Can WebViewExecuteScript be called right after adding WebViewGadget,
or do we have to use BindWebViewCallback with DOMContentLoaded first?

Thanks for the tips ... I was more interested in having the program not prevent regular scheduled sleep states,
however I believe the issue is not with PB but my Realtek driver, when sound plays it keeps a request open:

powercfg -requests

SYSTEM:
[DRIVER] Realtek High Definition Audio
An audio ...

Consider the following code that plays a sound with a timer, the sound is just a bit shorter than the timer ... almost a loop ...

This seems to prevent windows from going to sleep, and I was wondering if anyone would have a solution to this ..



InitSound()
UseOGGSoundDecoder()

OpenWindow(1, 200 ...

Consider the following code,- it seems to prevent Windows from going to sleep:



EnableExplicit

Enumeration 100
#Window
#WebView
EndEnumeration

OpenWindow(#Window, 100, 100, 400, 200, "Test", #PB_Window_MinimizeGadget | #PB_Window_ScreenCentered)
WebViewGadget(#WebView, 0, 0, 400, 200 ...

Ok that makes sense, although I've noticed that when you FreeMemory it just overwrites a few bytes at the beginning of the buffer
and you can actually make a second call to CatchSound afterwards and it will still play correctly as just the text strings are corrupted ...

This makes it hard to test ...

Great, I was fixing it in a similar way but yours is a bit cleaner :)

Couple questions ...

Would memory de-allocate here cause any issues:

CatchSound(Sound, *WAVBuffer)
FreeMemory(*WAVBuffer)

I was thinking make it a global at the start of the program and don't free until program exit ...

Mine is similar code, and I only tested with a local admin account as that's what I've got setup:



EnableExplicit

Enumeration 100
#Window
EndEnumeration

#NOTIFY_FOR_THIS_SESSION = 0
#WM_WTSSESSION_CHANGE = $02B1
#WTS_SESSION_UNLOCK = $8

Import "wtsapi32.lib"
WTSRegisterSessionNotification ...

I don't think it would help but I think I have found a solution via #WM_WTSSESSION_CHANGE & #WTS_SESSION_UNLOCK

Thanks!

Ok perfect, that's what I have ...

Unfortnately I located another bug, with 24 bit generation, the 2 channels have different data, and playback is scrambled ... hmm!

I have made the following changes, maybe someone can double check if this was a correct fix:

From
To

I found an issue after analyzing the wave file and it seems the center frequency is 25460hz instead of 20000hz

I suspect the bug is around here somewhere:

Time = Sample / SamplingRate * 8
Tone = Sin(Time * Frequency) * 32767 * Volume


The complete code with wave output, the program should be ...

I have tried it, but it only works when Windows restarts, as when it goes to sleep while logged in, the taskbar is already loaded

I think it's safe to say the code works

Sometimes it helps for someone else to glance over the code to spot a mistake :)

I found out some clicks are caused by volume starting at 100% even though the sound should not be heard there's a click when beginning and ending playback ...

EDIT:

The For Next loop you specified was the same as ...

Does anyone know how to easily detect when the Desktop is loaded after a wake up event ?

It seems the following code resumes while on the lock screen and certain Windows actions are not yet availabe until the user unlocks and goes into a Desktop session ?



Enumeration 100
#Window
#Timer ...