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Author Topic: Displying tooltips for each item in a TListView  (Read 403 times)

maurobio

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Displying tooltips for each item in a TListView
« on: March 26, 2025, 12:55:41 pm »
Dear ALL,

Long time no see! But here am I back with a single question: how to get tooltips in a TListView component using Lazarus? I would like to display some details when the user moves the mouse over each item.

I found a few examples for Delphi, but they are all Windows-specific (of course).

Can any one out there give me some help?

Thanks in advance!
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UCSD Pascal / Burroughs 6700 / Master Control Program
Delphi 7.0 Personal Edition
Lazarus 3.6 - FPC 3.2.2 on GNU/Linux Mint 19.1/20.1, Windows XP SP3, Windows 7 Professional, Windows 10 Home

Zvoni

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Re: Displying tooltips for each item in a TListView
« Reply #1 on: March 26, 2025, 01:09:39 pm »
Does it have to be a TListView?
Or is it actually a "misused" Grid (ListView in Report-Style)?

TStringGrid has CellHints....
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maurobio

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Re: Displying tooltips for each item in a TListView
« Reply #2 on: March 26, 2025, 01:12:32 pm »
Hi, Zvoni!

Yes, it should be a TListView (even if it is, as you say, a "misused" Grid in vsReport style).

Regards,
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Lazarus 3.6 - FPC 3.2.2 on GNU/Linux Mint 19.1/20.1, Windows XP SP3, Windows 7 Professional, Windows 10 Home

Zvoni

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Re: Displying tooltips for each item in a TListView
« Reply #3 on: March 26, 2025, 01:21:49 pm »
In that case the only thing coming to mind, would be to use the ListView's own Hint/ShowHint, but with a "custom" OnShowHint-Handler.
Inside there you'd need to "calculate" over which cell you are hovering, the content, WHERE to show the Hint, whatever else.....

The "DeLuxe"-Solution would be to implement on your own....
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maurobio

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Re: Displying tooltips for each item in a TListView
« Reply #4 on: March 26, 2025, 01:31:37 pm »
Hi, Zvoni!

As matter of fact, I just managed to get it implemented and working fine, for a single and three-column TListView. I attach my sample code for perusal.

Regards,
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UCSD Pascal / Burroughs 6700 / Master Control Program
Delphi 7.0 Personal Edition
Lazarus 3.6 - FPC 3.2.2 on GNU/Linux Mint 19.1/20.1, Windows XP SP3, Windows 7 Professional, Windows 10 Home

Zvoni

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Re: Displying tooltips for each item in a TListView
« Reply #5 on: March 26, 2025, 03:10:51 pm »
Quote from: maurobio on March 26, 2025, 01:31:37 pm
Hi, Zvoni!

As matter of fact, I just managed to get it implemented and working fine, for a single and three-column TListView. I attach my sample code for perusal.

Regards,
Nice. Looks simple enough....
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One System to rule them all, One Code to find them,
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in the Land of Redmond, where the Windows lie
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