Tray Icon from Imagelist, does not change with Getimage
lazarus / 39-Graphics

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linuxer · 2020-01-27 07:37

Hi,

I am facing the following problem.

In my Image list, the icons exist with different resolutions (Image
attached)

    ImageList1.Width            := 64;
    ImageList1.Height           := 64;
    ImageList1.Scaled           := true;      
    ImageList1.GetIcon(0, TrayIcon1.Icon); ------> Only no. 0 Indexed
Appears, no matter if I choose no. 1 instead
    TrayIcon1.Show;
    .......
    .......
    // later on change
    ImageList1.GetIcon(1, TrayIcon1.Icon);   -----> Icon Does not
Change                             ]

The same situation happens, if on my first ImageList.GetIcon()
statement, the no. 1 indexed BMP, is selected.

Awaiting your response

Regards

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MarkMLl · 2020-01-27 12:31

Has this previously been working, and if so can you say with which
version of Lazarus and FPC?

I have very little experience with icons and bitmaps, but it could be
related to a similar problem I was discussing a couple of days ago
relating to ToolButtons.

MarkMLl

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linuxer · 2020-01-27 15:47

It is a new project, so I am not in the position to tell, if it was
working before, but it normally should.

FPC version is 3.3.1

Lazarus version 2.1.0

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wp · 2020-01-27 18:16

The attached demo tries to simulate what you describe (if I understand
correctly).

Because I normally do not work with icons from image lists I added two
images lists, one with png, and one with ico images. They can be
selected with the radiogroup. Each image list contains two images at
various sizes which can be toggled with the button. The selected image
is extracted as icon and assigned to the TrayIcon.

On my system (Win 10, Laz trunk/fpc 3.0.4, and Laz trunk/fpc trunk)
the tray icon changes correctly for both png and ico image lists. Thus
I cannot reproduce your issue.

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linuxer · 2020-01-28 08:10

Thank you very much for your kind assistance! 

Regards