An Introduction to the Vector Classes

There are four Vector classes in the class library to be used with vector data:

LVectorBase

Basic methods for working with vectors, including:

Load

Save

Translate

Rotate

Scale

Paint

Selecting objects

Palettes

Set/Get Viewport

Set/Get Pan

Set/Get Camera

Image conversion (WMF, EMF)

LVectorDialog

Vector common dialogs for vector manipulation, including:

Vector rotation

Vector translation

Vector scaling

Methods for getting/setting common dialog entries

LVectorFile

Methods for working with vector files, including

Loading from a file

Saving to a file

Loading from a buffer, where you control the input stream

LVectorGroup

Methods for working with vector groups, including

Adding an object

Deleting groups

Emptying a group

Enumerating objects in groups

Getting/Setting group information

Setting the vector

LVectorLayer

Vector layer functions for working with vector layers, including:

Creating

Enumerating objects

Deleting layers

Emptying layers

Getting/setting layer information

Adding objects

Getting an object count

LVectorMemoryFile

Methods for working with files in memory, including:

Loading from a memory file

Saving to a file in memory

To see how these fit in the Class library hierarchy, refer to the Class Hierarchy Chart.

LVectorObject

Vector object functions for working with vector objects, including:

Creating

Getting/setting object information

Exploding objects

Getting bounding rectangles and parallelograms

Rotating

Scaling

Translating

Deleting

Manipulating the properties of derived class objects including:

LVectorWindow

Vector window functions for working with vectors, including:

Loading

Zooming

Scrolling

Panning

Scaling

Painting

Selecting Objects