Polyline (ImageKit Control/PrintDraw Method)

This method draws a polyline in the designated object.

[C++Builder] [ bool = ]imagekitcontrolname->PrintDraw->Polyline(NativeUInt DeviceValue, const TPoint * Points, const int Points_Size, TVIkOutPutDeviceMode DeviceMode)

[C++Builder] [ bool = ]imagekitcontrolname->PrintDraw->Polyline(void * DeviceValue, const TPoint * Points, const int Points_Size, TVIkOutPutDeviceMode DeviceMode)

[Delphi] [ Boolean = ]imagekitcontrolname.PrintDraw.Polyline(DeviceValue: THandle; const Points: array of TPoint; DeviceMode: TVIkOutPutDeviceMode)

[Delphi] [ Boolean = ]imagekitcontrolname.PrintDraw.Polyline(DeviceValue: Pointer; const Points: array of TPoint; DeviceMode: TVIkOutPutDeviceMode)

Parameters

Name	Explanation
DeviceValue	The device context or the raster image data depending on the DeviceMode
Points	An array of x,y coordinates that specifies the polyline. In C++Builder, the number of points -1 is passed into Points_Size
DeviceMode	If vikScreen, then the polyline will be drawn in pixel units. If vikPrinter, the polyline will be drawn in 0.1mm units. If vikMemoryHandle, the polyline will be drawn (in pixel units) to the image memory handle

Return Value

Returns True if successful. Returns False if unsuccessful.

Explanation

The Polyline method draws a polyline in the designated object. This method draws a straight line from a designated point to another point and from there to subsequent points. Unlike the polygon, the polyline is not closed. The points are specified by the x and y parameter arrays. The polyline is drawn from the value set in the PenStyle property. This method can draw in the following designated objects: screen, printer, and image data. When drawing a polyline, it is recommended that the PenWidth, PenMode, PenColor, Transparent, and BackColor properties also be set. The BackColor property is enabled when the Transparent property is False and the pen is set to draw lines other than solid lines.

If the DeviceMode parameter is vikScreen or vikMemoryHandle then x and y parameters are in pixel units.

If the DeviceMode parameter is vikPrinter then x and y parameters are in 0.1mm units.

Differences between the ImageKit7/8/9/10

The x, y parameters have been changed to TPoint type.
In Delphi, it is not necessary to pass the size of the array.
In VCL the constants contain a "v". In ActiveX, the constants are: ikScreen, ikPrinter, ikMemoryHandle.