GDI Vertical blank and vertical retrace test

[avcaballero]

Seems to work ok here the "VerticalBlank Signal" bleeps often, but the second line only from time to time.

When exit I get an error.

[Siekmanski]

Hi Alfonso,
That's because there's no backbuffer.
With the backbuffer it's without flickering. Have done this already.
What error do you have when you exit the application?

[avcaballero]

No message, just the next window

[Siekmanski]

Jochen found the bug, I hope..
I had a quick look, spotted a coding error.
New attempt.

[jj2007]

Jochen ,I see, it's the realease of an interface.

Yes, shortly after a FreeLibrary - that was easy. Note that on Win7-64 the old and new versions run fine but choke on exit, somewhere in the wild.

[Siekmanski]

Jochen,

Same as Alfonso, think it is now fixed. ( see previous post )

EDIT: forgot the attachment.

[avcaballero]

Exactly the same error for version 2 and 3

[Siekmanski]

Last attempt.
Else I have a better look tomorrow.

[avcaballero]

Sorry, the same. Have a breath   you are almost capable of producing more than I can prove

[Siekmanski]

 

[jj2007]

Engine4 runs fine but crashes on exit (Win7-64). When run with Olly, it exits OK with code 12h.

[Siekmanski]

Rewrote some stuff in the interface handling.
No errors on my system.
Sometimes you think when it runs well on your own system it does also on other systems.
Turns out this isn't always the case. 

Hope it runs now on XP and Win7 and closes without errors.

Are there Vista users on the forum who want to test this proggy?

[jj2007]

It closes without problems :t

[Siekmanski]

Thanks Jochen. 

Simple scroll example ( 1 buffer )
It scrolls smooth on my sytem even with 1 buffer. 

[jj2007]

Little jumps about once per second but otherwise fine :t