Draw expand/collapse buttons (+/-) when Aero is off

With visual styles, i can use

VisualStyleElement.TreeView.Glyph.Closed

and VisualStyleRenderer to draw [+] button like in TreeView.

But when user have a "Classic" style in Windows, visual styles are not supported and I still need to draw this glyph.

It is still possible to use classes like

System.Windows.Forms.CheckBoxRenderer

but I haven't found anything like this for Tre开发者_高级运维eView glyphs.

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Yes, it is not possible to get that glyph. It is a simple one but you have to write the code. DrawRectangle and DrawLine. Or use a bitmap. Or make it look like the simple Vista triangles. Or don't enable ownerdraw when visual styles are off.