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Skinning Scrollbar thumb [message #25267]

Tue, 16 February 2010 02:47

bushman
Messages: 134
Registered: February 2009

Experienced Member

I've successfully skinned the scrollbar thumb with images using the vthumb and the hthumb arrays, like in

 ScrollBar::Style scrollstyle = ScrollBar::StyleDefault();
 ...
 scrollstyle.vthumb[0] = Images::VThumbImage0;
 scrollstyle.vthumb[1] = Images::VThumbImage1;
 ...
 scrollstyle.hthumb[0] = Images::HThumbImage0;
 scrollstyle.hthumb[1] = Images::HThumbImage1;
 ...
 myctrl.SetScrollBarStyle(scrollstyle);

However, if the thumb button length increases inside the scroll bar (so as to cope with some less scrollable space in the view field of a ctrl, for example, due to data being removed from the ctrl), the thumb image stretches (resizes) to match the new thumb length, which in turn distorts the image and therefore ruins the skinning result.

Sad

You see my point?

My question is: Is there a workaround? I see that Windows does it wonderfully if the original default style ScrollBar::StyleDefault() is kept. How do you manage that? I mean, the three little thumb button grooves in Windows' scroll bars remain undistorted as the thumb size varies.

Help appreciated...many thanks in advance.

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Re: Skinning Scrollbar thumb [message #25269 is a reply to message #25267]

Tue, 16 February 2010 08:38

andrei_natanael
Messages: 262
Registered: January 2009

Experienced Member

Hi,
You should use hot-spots for that. See this topic. You have to set hot-spots for VThumbImage0 and VThumbImage1 in ImlEditor in TheIDE - there is a button in toolbar or press H key.

Andrei

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Re: Skinning Scrollbar thumb [message #25294 is a reply to message #25267]

Tue, 16 February 2010 16:48

bushman
Messages: 134
Registered: February 2009

Experienced Member

Oh, thank you, it's been very helpful!
If you please, yet along the same thread of thought, how do I place the usual Windows 3 thumb grooves right in the middle of the scroll button?

many thanks!

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Re: Skinning Scrollbar thumb [message #25297 is a reply to message #25294]

Tue, 16 February 2010 17:18

bushman
Messages: 134
Registered: February 2009

Experienced Member

Oh, I see it myself, after a little code prying I found

scrollstyle.vthumb[0] = ChLookWith(Images::VThumbImage0(), Images::GroovesRightInTheMiddle());

, which places whatever I want right in the middle of the scroll button!
Very Happy

Great!

Thank you so much, guys!!

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