Complete ownerdraw of TreeView is hard. It is so hard that Lutz Roeder of Reflector fame didn’t implement it fully. It is so hard that even Microsoft gave up on it. Consider the Windows 7 style:
Note the black triangle for an expanded node, the hollow one for a collapsed node. Esthetically pleasing, very easy to implement yourself and your app will automatically be ready for the Win7 look. Win win.
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solved I am looking for a good resource on ownerdrawn treeviews