Following reference describes the types of properties and methods' parameters independent of any programming language and environment. The table lists how they correspond to some of the most popular languages and development environments built-in types e.g. what data types will be mapped to FlowChartX types when you import FlowChartX type library.

Important Note
In order to be automation-compliant such system-specific data types (as handles to windows or device contexts - HWND, HDC) are replaced with automation types that have to be cast to their true type when used.

Types	ATL source code	VC++ #import / dispatch driver	Borland Delphi	C# / wrapper when imported	VB.NET / wrapper when imported
Boolean	VARIANT_BOOL	VARIANT_BOOL / BOOL	WordBool	bool	Boolean
short	short	short	Smallint	short	Short
long	LONG	long	Integer	int	Integer
float	float	float	Real	float	Single
text	BSTR	BSTR	WideString	string	String
color	OLE_COLOR	OLE_COLOR	OLE_COLOR	uint	UInt32
font	IFontDisp*	IFontDisp*	IFontDisp	stdole.IFontDisp	stdole.IFontDisp
picture	IPictureDisp*	IPictureDisp*	IPictureDisp	stdole.IPictureDisp / Image	stdole.IPictureDisp / Image
unsigned long	ULONG	unsigned long	UINT	uint	UInt32
buffer	BYTE*	unsigned char*	var BYTE	ref byte	ByRef as Byte
array of bytes	SAFEARRAY (BYTE)*	SAFEARRAY*	PSafeArray	ref Array	ByRef as Array
reference to arrow object	IArrowItem*	IArrowItemPtr smart pointer / LPDISPATCH	IArrowItem	FLOWCHARTLib.Arrow	FLOWCHARTLib.Arrow
reference to box object	IBoxItem*	IBoxItemPtr smart pointer / LPDISPATCH	IBoxItem	FLOWCHARTLib.box	FLOWCHARTLib.box
reference to table object	ITableItem*	ITableItemPtr smart pointer / LPDISPATCH	ITableItem	FLOWCHARTLib.Table	FLOWCHARTLib.Table
reference to group	IGroupItem*	IGroupItemPtr smart pointer / LPDISPATCH	IGroupItem	FLOWCHARTLib.Group	FLOWCHARTLib.Group
reference to object	LPDISPATCH	IDispatch*	IDispatch	object	Object
collection of arrow objects	IArrows*	IArrowsPtr smart pointer / LPDISPATCH	IArrows	FLOWCHARTLib.IArrows	FLOWCHARTLib.IArrows
collection of box objects	IBoxes*	IBoxesPtr smart pointer / LPDISPATCH	IBoxes	FLOWCHARTLib.IBoxes	FLOWCHARTLib.IBoxes
collection of table objects	ITables*	ITablesPtr smart pointer / LPDISPATCH	ITables	FLOWCHARTLib.ITables	FLOWCHARTLib.ITables
collection of groups	IGroups*	IGroupsPtr smart pointer / LPDISPATCH	IGroups	FLOWCHARTLib.IGroups	FLOWCHARTLib.IGroups
enumerator	IEnumVariant*	IEnumVariant*	IEnumVariant	IEnumerator	IEnumerator