问题
I'm setting the icon in a Virtual Treeview in its OnGetImageIndex event. It works, but the icon is positioned directly at the left edge of the node (x=0). I'd like to move it a little bit to the right, but I can't find any way to do this.
An alternative would be to draw the icon manually, but I'm wondering if there's an easy way to position the icon that I'm overseeing.
来源：https://stackoverflow.com/questions/37167702/icon-position-in-virtual-treeview