a part of the screen is blacked when starting hydrogen

[trebmuh]

Hi, I just build eed4d32 on an updated debian Jessie.
When I launch it, I've got a part of the screen which is black as following:

If I change "velocity" to something else, the black part of the window is refreshed. If I then come back to "velocity", everything works as expected as following:

Now, if I'm closing Hydrogen and reopening it, it's back to black.

If you would need some more info, tell me.

[mikotoiii]

I am getting the same thing on the Windows port, except instead of black,
it's a graphical rainbow. It also appears to mess with the scroll bars. It
seems to fix itself on Windows at least when you click on any of the
glictched parts, or scroll the velocity window.
On Sep 18, 2015 6:40 PM, "trebmuh" [email protected] wrote:

Hi, I just build eed4d32
eed4d32
on an updated debian Jessie.
When I launch it, I've got a part of the screen which is black as
following:
[image: hydrogen-bug-1]
https://cloud.githubusercontent.com/assets/8705846/9971693/1e362d4e-5e5e-11e5-81eb-be2559d919ac.png
If I change "velocity" to something else, the black part of the windows is
refreshed. If I then come back to "velocity", everything works as expected
as following:
[image: hydrogen-bug-2]
https://cloud.githubusercontent.com/assets/8705846/9971716/4d7e573e-5e5e-11e5-8ae1-b3128f33f3a3.png
Now, if I'm closing Hydrogen and reopening it, it's back to black.

If you would need some more info, tell me.

—
Reply to this email directly or view it on GitHub
#297.

[trebmuh]

Thanks for your comment. I can confirm that I don't have to play with velocity, pan or other. Clicking somewhere on the black part is successful to get the normal display.

[thijz]

this is something i have also seen on a number of occasions
looks like that part of the gui is not properly initialized ?

[mauser]

Hi,
this is a very old bug in hydrogen.. I had the impression that i fixed it in 0.9.6, but IIRC we had to remove some parts of my fix since it introduces new problems.

[trebmuh]

Thanks for commenting guys. It's not a big bug and it's rather minor since it doesn't look to affect anything more. I just wanted to mentioned it as it could look a bit bugish for a new user. Maybe we can put a note on the release version changelog if the bug is still there.

[thijz]

fyi: i have this now when i open hydrogen (using code of today : 9ff99e7)

[trebmuh]

Hi all, I built Hydrogen from today's GIT (ie: d7dacfe), this bug is still here, and I can confirm what @thijz said in #325 : after choosing to click on the 'dont show this any more' option when starting hydrogen, closing once Hydrogen and restarting it, the bug disappears.
Hope that helps.

[pvint]

I just had this too! Trying not to get distracted from what I am doing, but after I deleted my preferences file, the next startup it happened.

[pvint]

Fixed in 512d903 and pushed to master.

It seems that spawning this dialog after the main app was created caused the corruption. In particular, moving the call to "showDevelWarning()" above the following line was the key:
h2app = new HydrogenApp( this, pSong );
If the devel dialogue gets shown after that, the corruption occurs. (Bad use of a pointer somewhere?)

[trebmuh]

I can confirm that it's not here anymore on a fresh rebuild from 3002477
Thanks @pvint !

Added here: https://github.com/hydrogen-music/hydrogen/wiki/New-features-in-Hydrogen-1.0#a-part-of-the-screen-is-blacked-when-starting-hydrogen