Screen artifact/trail when dragging/resize a border

[joomlaview13]

Hi guys,

I was running the samples, and I encountered a problem that is driving me crazy. When I tried to resize the panel by dragging on the border, some black lines/visual artifacts appeared above the panel, and wouldn't go away until I let go of left mouse button. You can see a picture of it below:

The strange thing is it only happened on my Win10 system, and I couldn't reproduce it on my Win7 box. So I suspect it might have something to do with a particular setting in Win10. Could anyone tell me how to get rid of those annoying black lines?

Thanks!

[Smurf-IV]

Might be the order they are added in the Designer, so the "Drag context" thinks it needs to go to the top of the form. Just a guess.

[joomlaview13]

Thanks for the reply, Smurf. I just took a look at Designer.cs and tried to rearrange things... No use :( Do you have any other suggestion or tip?

So let me describe the problem in details -- The problem exists in every example included in the toolkit (with a drag-able border).. Every time I press the left mouse button and try to drag the border, black lines would appear on the top.. Sometimes even after I let go of the mouse button, the black lines remain on the screen.

The problem only affects Win10 system (my laptop). The border-dragging operation works correctly on my Win7 desktop.

Did anyone else encounter the same problem (or able to replicate this issue)?

I really want to use Krypton toolkit for my application, but can't really use it unless I solve this issue.

Any help will be much appreciated.

[joomlaview13]

BTW, this is a brand new laptop with Win10 installed. So it cannot be a graphic memory issue. The issue only affects Krypton toolkit (and the border-dragging works fine for Visual studio.. etc)..

[JohnRanger]

Hi

I have tested the demo apps right now on my Win10 (with Intel and NVIDIA graphics Card) - it is also a Laptop - altough an older one - an no such artefacts appear.

I would then tend to think that this is a graphics Driver Problem.

What Kind of graphic Card is in your Laptop?

With Kind regards,

John

[joomlaview13]

Hi John,

I have nVidia Geforce 1070 Ti, with latest graphics driver installed. And it's a HP Omen 17.3'' laptop I just bought.

That actually makes sense because I couldn't reproduce the artifacts on my older desktop with win7 either.

Incidentally, I've tried some other winform components (Syncfusion.. DevExpress.. etc), and none of them have given me such problem. It's giving me headache as I'd rather use the free Krypton suite instead. :(

[joomlaview13]

I downloaded my nVidia driver directly from nVidia. The only thing that's been giving me problem is the Krypton demos.

Could someone else with the latest nVidia graphics card and driver try the demo and see if you can reproduce the problem?

Thanks.

[Cocotteseb]

I have the same problems on two computers (different nvidia cards) on my app. I didn't have this problem before.
I wonder if it is related to the version of Windows 10 : fall creators update 1709 for me. Same for you ?

[joomlaview13]

Yes!

I first noticed the problem right after I reinstalled my Win10, so I suspect it might have something to do with one of the updates. Let me go check and see if I have the fall creators update..

BTW -- this problem pretty much makes the toolkit unusable to me.

Do you have any idea how to fix this? :(

[joomlaview13]

Can someone else with Win10 and latest updates pitch in and give us your input?

The error only exists on my Win10 box with latest updates, and not my old Win7 system. So I suspect it might be windows update-related, just like Cocotteseb mentioned.

Could someone else verify this?

[joomlaview13]

FYI, I have nVidia GeForce 1070Ti with latest graphic driver, and latest windows 10 updates installed.

[MGRussell]

I expect there is a good chance this fix I suggested here could solve your issue. The method this library uses to hide updates is unusual and seems to have some issues. The issue I was solving with that fix was near identical to the one you're describing.

[Cocotteseb]

This drives me nuts.
I think the problem comes from the function
private static void DrawSplitIndicator(Rectangle drawRect) { // We just perform a simple reversible rectangle draw ControlPaint.FillReversibleRectangle(drawRect, Color.Black); }

in SeparatorController.cs

However I do not understand why on the latest Win 10 builds it does not longer work and how to overcome this issue.
Meanwhile someone finds out a better solution, I've added a test to not display the separator when moving on Win10...

In public SeparatorController(ISeparatorSource source, ViewBase target, bool splitCursors, bool drawIndicator, NeedPaintHandler needPaint) : base(target, needPaint)

        `if (Environment.OSVersion.Version.Major >= 10)
        {
            _drawIndicator = false; //unless it flickers on Win10 : https://github.com/ComponentFactory/Krypton/issues/79
        }
        else
        {
            _drawIndicator = drawIndicator;
        }
	}`

[PWagner1]

Hi @Cocotteseb,

I was just looking at your solution, but I can't figure out where you get the _drawIndicator variable from? I am working on the .NET framework 4.7 port with @Smurf-IV, and trying to implement your fix. Any help is appreciated, and you will get credited for your assistance.

[Cocotteseb]

Hi @Wagnerp /@Smurf-IV,

In your code you have automatic property :
/// <summary> /// Gets and sets the drawing of the movement indicator. /// </summary> public bool DrawMoveIndicator { get; set; }

I have
/// <summary> /// Gets and sets the drawing of the movement indicator. /// </summary> public bool DrawMoveIndicator { get { return _drawIndicator; } set { _drawIndicator = value; } }

So just use DrawMoveIndicator in your code.
It's a really bad fix as there is no longer artifact but also no longer the moving indicator. If you find something better we all be happy !

[PWagner1]

Hi @Cocotteseb

Many thanks for the response. I have implemented the fix into the port, and have credited you for you work.