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Chart background color #482622
03/08/21 09:47
03/08/21 09:47
Joined: Oct 2018
Posts: 37
7
7th_zorro Offline OP
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7th_zorro  Offline OP
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Joined: Oct 2018
Posts: 37
Indicators disappear in scaling mode.Because It is darker than the background.

I suggest chart background color to black.

Or changing the drawing mode in the source code maybe helpful.

SetStretchBltMode(hdc, BLACKONWHITE);




Last edited by 7th_zorro; 03/08/21 09:48.
Re: Chart background color [Re: 7th_zorro] #482699
03/18/21 03:55
03/18/21 03:55
Joined: Oct 2018
Posts: 37
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7th_zorro Offline OP
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7th_zorro  Offline OP
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Indicator problem

Anybody knows what cause this problem?

And please fix this.

Last edited by 7th_zorro; 03/18/21 04:13.
Re: Chart background color [Re: 7th_zorro] #482700
03/18/21 14:54
03/18/21 14:54
Joined: Jul 2000
Posts: 27,479
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jcl Offline

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jcl  Offline

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Joined: Jul 2000
Posts: 27,479
Frankfurt
The link is dead. But I don't think a black background will fix disappearing indicators. Can you post a screenshot?

Re: Chart background color [Re: 7th_zorro] #482703
03/18/21 15:57
03/18/21 15:57
Joined: Oct 2018
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7th_zorro Offline OP
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7th_zorro  Offline OP
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When horizontally scrolled, indicator below changed.
I think it is drawing problem.

Attached Files 1.JPG2.JPG
Re: Chart background color [Re: 7th_zorro] #482704
03/18/21 16:31
03/18/21 16:31
Joined: Jul 2000
Posts: 27,479
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jcl Offline

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jcl  Offline

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Joined: Jul 2000
Posts: 27,479
Frankfurt
Yes. I did not make the chart library, but suppose a bar is not drawn when it's less than a fraction of one pixel.

A different background will not help, but you could try different plot types, like a fat line. That will possibly be drawn.

Re: Chart background color [Re: 7th_zorro] #482705
03/18/21 17:14
03/18/21 17:14
Joined: Oct 2018
Posts: 37
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7th_zorro Offline OP
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7th_zorro  Offline OP
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I tried line chart, it has same problem.

I think you can control the zoom rate to be multiple of 2, then maybe the charts are not distorted.

..., 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64, ...

Last edited by 7th_zorro; 03/18/21 17:29.

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