Class MetafileCanvas

Canvas for generating Windows Metafiles (EMF).

For this class to generate correct EMF files, the application must be configured to be *dpiAware*, either by adding an application manifest and uncommenting the relevant section or by calling SetProcessDPIAware() at application start.

[System.Runtime.InteropServices.DllImport("user32.dll")]
private static extern bool SetProcessDPIAware();

Inheritance

object

AbstractCanvas

SystemDrawingCanvas

MetafileCanvas

Implements

ICanvas

IDisposable

Inherited Members

SystemDrawingCanvas.InitGraphics(Graphics, bool, float)

SystemDrawingCanvas.SetOffset(float, float)

SystemDrawingCanvas.Close()

SystemDrawingCanvas.SetTransformation(double, double, double, double, double)

SystemDrawingCanvas.StartPath()

SystemDrawingCanvas.CloseSubpath()

SystemDrawingCanvas.MoveTo(double, double)

SystemDrawingCanvas.LineTo(double, double)

SystemDrawingCanvas.AddRectangle(double, double, double, double)

SystemDrawingCanvas.CubicCurveTo(double, double, double, double, double, double)

SystemDrawingCanvas.FillPath(int, bool)

SystemDrawingCanvas.StrokePath(double, int, LineStyle, bool)

SystemDrawingCanvas.PutText(string, double, double, int, bool)

AbstractCanvas.MmToPt

AbstractCanvas.FontMetrics

AbstractCanvas.SetupFontMetrics(string)

AbstractCanvas.PutTextLines(string[], double, double, int, double)

AbstractCanvas.Ascender(int)

AbstractCanvas.Descender(int)

AbstractCanvas.LineHeight(int)

AbstractCanvas.TextWidth(string, int, bool)

AbstractCanvas.SplitLines(string, double, int)

AbstractCanvas.Dispose()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Codecrete.SwissQRBill.Windows

Assembly: Codecrete.SwissQRBill.Windows.dll

Syntax

public class MetafileCanvas : SystemDrawingCanvas, ICanvas, IDisposable

Constructors

MetafileCanvas(double, double, string)

Creates a new canvas.

Declaration

public MetafileCanvas(double width, double height, string fontFamilyList)

Parameters

Type	Name	Description
double	width	Width of resulting bitmap, in mm
double	height	Height of resulting bitmap, in mm
string	fontFamilyList	A list font family names, separated by comma (same syntax as for CSS). The first installed font family will be used.

Methods

Dispose(bool)

Frees and releases resources.

Declaration

protected override void Dispose(bool disposing)

Parameters

Type	Name	Description
bool	disposing	indicates whether the method is called from a Dispose method (true) or from a finalizer (false).

Overrides

SystemDrawingCanvas.Dispose(bool)

SaveAs(string)

Writes the enhanced metafile (EMF) to the specified file path.

The canvas can no longer be used for drawing after calling this method.

Declaration

public void SaveAs(string path)

Parameters

Type	Name	Description
string	path	The path (file name) to write to.

ToByteArray()

Returns the result as a byte array.

Declaration

public override byte[] ToByteArray()

Returns

Type	Description
byte[]	The result.

Overrides

SystemDrawingCanvas.ToByteArray()

ToMetafile()

Returns the result as a metafile instance.

The caller must take ownership of the metafile and dispose it.

This method can only be called once. Thereafter, it is no longer possible to draw to this canvas or to call this method a second time.

Declaration

public Metafile ToMetafile()

Returns

Type	Description
Metafile	The metafile.

WriteTo(Stream)

Writes the enhanced metafile (EMF) to the specified stream.

The canvas can no longer be used for drawing after calling this method.

Declaration

public void WriteTo(Stream stream)

Parameters

Type	Name	Description
Stream	stream	The stream to write to.

Implements

ICanvas

IDisposable