PolyBezier (ImageKit Control/PrintDraw Method)

This method draws a bezier curve in the designated object (the screen, printer, or image data).

[Visual Basic] [ Boolean = ]imagekitcontrolname.PrintDraw.PolyBezier(DeviceValue As Long, x As Long, y As Long, Points As Long, DeviceMode As OutPutDeviceModeConstants)

[Visual C++] [ BOOL = ]imagekitcontrolname.GetPrintDraw().PolyBezier(long DeviceValue, long *x, long *y, long Points, long DeviceMode)

Parameters

Name	Explanation
DeviceValue	The device context or the raster image data (i.e. Hdc or ImageHandle) depending on the DeviceMode
x,y	The array of x,y coordinates that specifies the polygon (1)In Visual C++, pass the pointer to the first element of the array (2)In Visual Basic, Dim x(0 To 2) As Long then set x(0)
Points	The number of points from the x,y arrays (only PolyBezier)
DeviceMode	If 0 (ikScreen), then the bezier curve will be drawn in pixel units. If 1 (ikPrinter), the bezier curve will be drawn in 0.1mm units. If 2 (ikMemoryHandle), the bezier curve will be drawn (in pixel units) to the image data according to the DeviceValue parameter

In Visual Basic the following constants can be used: (ikScreen = 0, ikPrinter = 1, ikMemoryHandle = 2).

Return Value

Returns True (nonzero) if successful. Returns False (0) if unsuccessful.

Explanation

The PolyBezier method draws a bezier curve in the designated object. The initial bezier curve consists of 4 points, a start point, 2 control points, and an endpoint. Thereafter the bezier curve consists of 3 points (the control points and endpoint).

To execute this method, the following properties should be set PenWidth, PenStyle, PenMode, PenColor, Transparent, and BackColor. The BackColor property is enabled when the Transparent property is False and the pen is set to draw solid lines.

The value contained in the Points parameter must be (3 X the number of beziers) + a start point

For scripting languages and other programs that require variant types, please refer to the PolyBezierVariant method.

If the DeviceMode parameter is 0 or 2 then x and y parameters are in pixel units.

If the DeviceMode parameter is 1 then x and y parameters are in 0.1mm units.

Sample code:

Visual Basic

Dim Ret As Boolean

Dim CurveX(4) As Long

Dim CurveY(4) As Long

CurveX(0) = 10: CurveY(0) = 100

CurveX(1) = 50: CurveY(1) = 50

CurveX(2) = 100: CurveY(2) = 150

CurveX(3) = 150: CurveY(3) = 100

ImageKit1.PrintDraw.ClearProperty

ImageKit1.PrintDraw.PenColor = vbGreen

ImageKit1.PrintDraw.PenStyle = 1

ImageKit1.PrintDraw.PenWidth = 15

Ret = ImageKit1.PrintDraw.PolyBezier(hDC, CurveX(0), CurveY(0), 4, 0)

Visual C++

long CurveX[4], CurveY[4];

CurveX[0] = 10; CurveY[0] = 100;

CurveX[1] = 50; CurveY[1] = 50;

CurveX[2] = 100; CurveY[2] = 150;

CurveX[3] = 150; CurveY[3] = 100;

ImageKit1.GetPrintDraw().ClearProperty();

ImageKit1.GetPrintDraw().SetPenColor(RGB(0, 0, 255));

ImageKit1.GetPrintDraw().SetPenStyle(1);

ImageKit1.GetPrintDraw().SetPenWidth(15);

ImageKit1.GetPrintDraw().PolyBezier(hDC, CurveX, CurveY, 4, 0);