I have created my panels and all is working well. However, i would to change the icon when the panels are minimized as if you have say 2-4 panels the icons are the same hence impossible to distinguish.
Can that be done ?
1)Create two png files ( 23px x 23 px or 25x25 ) and name them respectively with the name of the panel you created :
Substitute panel name ( in my example) with your own panel's name and be sure to add Normal and Rollover with no space between them and the end of our panel's name
Rollover is the icon state when your mouse is over it
2) Once your panel is exported put the two .png files inside his "content" folder as in the image below
That is the right way,all is ok with me, may be there is something not written in the right way
does a check for the correct panel name ( mantain the same space it has) and checks also that "Normal" and "Rollover" are placed attached to the panel name
Check also if in the exported panel ( in Photoshop) are the two icons