Which component for highlighting part of item/string
lazarus / 31-LCL

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user2126296 · 2013-03-20 12:12

Which component (TListView, TStringGrid, ...) do you recommend for
this:
presentation of list itemsitems will be stringsspecified 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 · 2013-03-20 12:56

TSynEdit (or TSynMemo)

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user2126296 · 2013-03-20 14:05

Quote from: Blaazen on March 20, 2013, 01:56:40 pmTSynEdit (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 · 2013-03-20 15:04

The other option is to do painting yourself. Many components have on
Paint, or even OnPaintItem (sorry no example)

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theo · 2013-03-20 16:23

Yes, paint it yourself.

Canvas.TextExtent  
Canvas.FillRect
Canvas.TextOut or TextRect

are your friends.

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user2126296 · 2013-03-20 17:22

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 · 2013-03-21 08:16

Yes, OnDrawItem, OnCustomDraw ... etc. whatever seems appropriate.