[SOLVED] Different pictures with different values

[balazsszekely]

For a TToolBar, TListView, TTreeView, etc I would use three separate TImageList. When the user change a color profile, just assign the appropriate TImageList to each control.
If this not the case, for example you have large images and you need them for a special reason, just zip the png's and store the zip as resource. When needed, extract the resource to a temporary folder then load each png according to your needs.

[madref]

I also thought about using a TImageList. But there strands my knowledge.
How to get them from the TImageList to the TImage

[balazsszekely]

How to get them from the TImageList to the TImage

In this case I would go with resources:
http://wiki.freepascal.org/Lazarus_Resources

[wp]

How to get them from the TImageList to the TImage

Code: Pascal  [Select][+][-]

1.   ImageList1.GetBitmap(Listbox1.ItemIndex, Image1.Picture.Bitmap);

When working with imagelists you must keep in mind that all images must be same size and that you must preset the ImageList properties Width and Height with the expected image width and height before adding any images to the list.

[balazsszekely]

@wp
GetBitmap keeps the transparency? The OP mentioned something about transparent png's.

PS: I'm only asking this because under delphi there was a component(TPngImages) which handled png natively.  I never worked with png and lazarus, at least not with transparent png's.

[wp]

Yes - look at the attached demo. The image list contains some png images with semitransparent shadow.

I do remember the times when I discovered TPngImages for Delphi and was suprised how beautiful the Delphi toolbars look with it. But Lazarus is even better - it just works out of the box.

[balazsszekely]

Ok, thanks @wp!

[madref]

Thanks for the help