• BOTTOM : canvascv::Widget
• BOTTOM_LEFT : canvascv::Widget
• BOTTOM_RIGHT : canvascv::Widget
• CENTER : canvascv::Widget
• CENTER_BOTTOM : canvascv::Widget
• CENTER_LEFT : canvascv::Widget
• CENTER_RIGHT : canvascv::Widget
• CENTER_TOP : canvascv::Widget
• ENTER : canvascv::Widget
• LEAVE : canvascv::Widget
• LEFT : canvascv::Widget
• PRESS : canvascv::Widget
• RELEASE : canvascv::Widget
• REMOVED : canvascv::Shape
• RIGHT : canvascv::Widget
• SELECT : canvascv::Shape
• TOP : canvascv::Widget
• TOP_LEFT : canvascv::Widget
• TOP_RIGHT : canvascv::Widget
• UNSELECT : canvascv::Shape