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Author Topic: Which component for highlighting part of item/string  (Read 4460 times)

user2126296

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Which component for highlighting part of item/string
« on: March 20, 2013, 01:12:27 pm »
Which component (TListView, TStringGrid, ...) do you recommend for this:
  • presentation of list items
  • items will be strings
  • specified substrings (e.g. words) will be highlighted - I need to highlight some words in a string/item.
Example: http://www.codeproject.com/Articles/103259/Highlight-Searched-Text-in-WPF-ListView

I am not aware of a way to change background color for a part of string (using OnCustomDrawItem).
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Blaazen

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Re: Which component for highlighting part of item/string
« Reply #1 on: March 20, 2013, 01:56:40 pm »
TSynEdit (or TSynMemo)
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user2126296

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Re: Which component for highlighting part of item/string
« Reply #2 on: March 20, 2013, 03:05:48 pm »
Quote from: Blaazen on March 20, 2013, 01:56:40 pm
TSynEdit (or TSynMemo)
It'd be non-standard usage of TSynMemo because of need to present tabular data:
  • read only row (can be easily implemented in TSynMemo)
  • when onclick on row, full row should be selected (not sure)
  • need to access data/strings in particular column






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Martin_fr

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Re: Which component for highlighting part of item/string
« Reply #3 on: March 20, 2013, 04:04:25 pm »
The other option is to do painting yourself. Many components have on Paint, or even OnPaintItem (sorry no example)
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theo

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Re: Which component for highlighting part of item/string
« Reply #4 on: March 20, 2013, 05:23:25 pm »
Yes, paint it yourself.

Canvas.TextExtent   
Canvas.FillRect
Canvas.TextOut or TextRect

are your friends.
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user2126296

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Re: Which component for highlighting part of item/string
« Reply #5 on: March 20, 2013, 06:22:18 pm »
And which event should be the trigger to do the painting?
TListBox, TListView and TStringGrid have only OnDrawItem, no OnPaint(Item) event available. I do not know the difference between OnPaint(Item) and OnDrawItem events.
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theo

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Re: Which component for highlighting part of item/string
« Reply #6 on: March 21, 2013, 09:16:47 am »
Yes, OnDrawItem, OnCustomDraw ... etc. whatever seems appropriate.
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