Are there any Dropdown controls with checkboxes in them?

I've seen some for web using javascript, but I am lookin开发者_开发知识库g for a Windows Form control that is a ComboBox that when opened displays a list of checkboxes and labels, allowing to select one or more, with a "Select All" option.

Would like a non-commercial solution.

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I hate to suggest a commercial solution, however, I am using the DevExpress Winforms suite and it has exactly what you are looking for. Plus it really let's you really customize it (as you see in the example below).

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why can't you build your own checked comboBox by integrating a label, button and a checked listbox?