How do I change the CheckedListBox rectangle box color?

[jonny-xhl]

When I set the ForeColor property, but the color of the rectangle box did not change.

[RussKie]

You can't. CheckedListBox is essentially a ListBox control with ListBox.DrawMode = OwnerDrawFixed and custom drawn items. If you want custom checkboxes you would need to render those manually similarly to how it is done in CheckedListBox.

All rendering is done in OnDrawItem, including drawing checkboxes, background and text:

winforms/src/System.Windows.Forms/src/System/Windows/Forms/CheckedListBox.cs

Line 519 in a6e8118

protected override void OnDrawItem(DrawItemEventArgs e)

[jonny-xhl]

OK, I'll have a try.