CDViewPortControlBaseMBS.Constructor

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

The constructor.

CDViewPortControlBaseMBS.getProperty(attr as integer) as integer

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Queries a property by ID.

CDViewPortControlBaseMBS.handleMouseDown(x as double, y as double)

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Handles the mouse down.

Argument	Default	Description
x	(Mandatory)	The x pixel coordinate of the mouse.
y	(Mandatory)	The y pixel coordinate of the mouse.

Some examples using this method:

• /ChartDirector/RealTime ViewPort

CDViewPortControlBaseMBS.handleMouseMove(x as double, y as double, isDragging as boolean)

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Handles the mouse move.

Argument	Default	Description
x	(Mandatory)	The x pixel coordinate of the mouse.
y	(Mandatory)	The y pixel coordinate of the mouse.

Some examples using this method:

• /ChartDirector/RealTime ViewPort

CDViewPortControlBaseMBS.handleMouseUp(x as double, y as double)

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Handles the mouse up.

Argument	Default	Description
x	(Mandatory)	The x pixel coordinate of the mouse.
y	(Mandatory)	The y pixel coordinate of the mouse.

Some examples using this method:

• /ChartDirector/RealTime ViewPort

CDViewPortControlBaseMBS.isOnPlotArea(x as double, y as double) as boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Determines if a point is on the plot area.

Argument	Default	Description
x	(Mandatory)	The x pixel coordinate of the point.
y	(Mandatory)	The y pixel coordinate of the point.

Some examples using this method:

• /ChartDirector/RealTime ViewPort

CDViewPortControlBaseMBS.paintViewPort

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Updates the viewport rectangle on the chart to reflect the state of the viewport.

Some examples using this method:

• /ChartDirector/RealTime ViewPort

CDViewPortControlBaseMBS.setMouseMargin(mouseMargin as Integer, cornerMargin as Integer)

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Sets the margin around the viewport border for mouse drag.

The viewport border can be as thin as 1 pixel, and it is hard to position the mouse over the border to drag it. To make it easier to drag the border, dragging can start if the mouse is within a certain margin from the border.

If both vertical and horizontal zooming is allowed, the viewport corners can be dragged diagonally to resize the viewport in both directions at the same time. To distinguish between dragging the corners and the borders, if the mouse is within a certain margin from the corner when the dragging starts, it is considered to be dragging the corner.

In either case, the mouse cursor will change to let the user know if the border or corner can be dragged.

Argument	Default	Description
mouseMargin	(Mandatory)	The margin around the viewport border within which dragging of the border can start. The margin is in pixel unit. The default is 4 pixels.
cornerMargin	(Mandatory)	The margin around the viewport corner within which dragging of the corner can start. The margin is in pixel unit. The default is 8 pixels.

CDViewPortControlBaseMBS.setProperty(attr as integer, value as integer)

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Sets a property by ID.

CDViewPortControlBaseMBS.setZoomScrollDirection(zoomDirection as integer, scrollDirection as integer)

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	ChartDirector	MBS ChartDirector Plugin	21.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Sets the directions in which zooming and scrolling are allowed.

The viewport control uses this information to determine which type of dragging is allowed.
Arguments

Argument	Default	Description
zoomDirection	(Mandatory)	The allowable zoom direction. Must be one of the predefined constants kDirectionHorizontal, kDirectionVertical and kDirectionHorizontalVertical for horizontal, vertical and bi-directional zooming.
scrollDirection	(Mandatory)	The allowable scroll direction. Must be one of the predefined constants kDirectionHorizontal, kDirectionVertical and kDirectionHorizontalVertical for horizontal, vertical and bi-directional scrolling.

Some examples using this method:

• /ChartDirector/RealTime ViewPort