create a checkbox icon of own

Question

Hi all,
I need to create a checkbox icon of own.

I have a custom treeview class. Now i want to add checkboxes in that treeview. for checkbox button i need to create a icon because i didnot found any checkbox button icon in SystemIcons.

this.StateImageList = new ImageList();

this.StateImageList.Images.Add(SystemIcons.Application);

 Can somebody help

Thanks in advance