Pie chart center click disable - ios

When I clicks on pieChart chartValueSelected() method called. But now my need is when I click in center in pieChartView, there will be no action perform.

I don't know what kind of chart (or Library) you used.
In this situation, the contents of function you written seem not to matter.
So I will explain the general situation.
You can place a transparent button in the middle of the pie-chart.
Then link that button to your "chartValueSelected()" function.

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I appreciate if anyone can tell me how to do it
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Home button in PowerPoint to show on mouseover using VBA

I use a home button on most of my slides with a link back to the agenda for quick jumps during my presentation. That way I avoid flipping through the individual slides and get straight back to the overview.
However, I don't want the home button in my lower right corner to show on each page as it spoils the clean look. I tried to use the mouseover event in combination with a macro but can't get it to run. I thought about making the home button completely transparent and on mouseover I would set the transparency to zero so the button shows up. When I click on it, it would follow the link.
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You do know that you can simply press 1 then Enter to return to the first slide in the show, right?
But to follow up on your "I thought about .." idea, why not add a shape on the slide master in a place that won't get covered up by content in any of the slides, then assign it a Go To Slide 1 action setting. After testing to make sure it does what you want, give it any color you like then make it 99% transparent.
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I hope you understand my explanation and problem.
BR,
Benjamin Kruger

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What do you check to see if the up or down arrow in the listbox vertical scroll bar were clicked.
Looked at dozens of post all over the web and no answer.
What I want to do is if they click up or down then make the next visible item in the list the selected one. Make it highlighted.
thanks all
It looks like the control won't do it natively. You will need to implement it yourself. You can use this post as a guideline:
http://www.codeproject.com/Articles/7554/Getting-Scroll-Events-for-a-Listbox
Note that you will need to handle the WM_VSCROLL message rather than the WM_HSCROLL message as depicted in the code sample.

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