Enum MessageBoxDefaultButton Path C++ Link System.Windows.Forms.MessageBoxDefaultButton, System.Windows.Forms underlying int32 System.Windows.Forms.dll Values 3 NameValueHex Button100x00Button22560x100Button35120x200 Used by 2types with a member, parameter or interface of this type MessageBoxMessageBoxForm // System.Windows.Forms.MessageBoxDefaultButton, System.Windows.Forms enum class MessageBoxDefaultButton : int32 { Button1 = 0, Button2 = 256, Button3 = 512, };