How to add icons my package components

We have package "my_pkg" with components TComp1, TComp2 and want to add icons for components to IDE component pallette.

First we have to prepare icons in .png files, size 24x24. If you want get them from Delphi package, you can use the free "XN Resource Editor" to export icons from .dcr files.

Now we need app "lazres". It's located in "tools" subfolder of IDE folder. Compile it under Windows: "c:\lazarus\tools\lazres.lpi" to lazres.exe. We use lazres.exe to create Lazarus resource file .lrs from .png files:

   c:\lazarus\tools\lazres.exe my_pkg_icons.lrs TComp1.png TComp2.png

Into package my_pkg we add file my_pkg_icons.lrs (tab "Add file", type LRS).

At least one unit in package must have "initialization" in which we must write

   {$I my_pkg_icons.lrs}

After installing package, component pallette must have icons for TComp1, TComp2.