Graphics::EnumerateMetafile Method (Metafile^, array<Point>^, Rectangle, GraphicsUnit, Graphics::EnumerateMetafileProc^, IntPtr, ImageAttributes^)

 

Sends the records in a selected rectangle from a Metafile, one at a time, to a callback method for display in a specified parallelogram using specified image attributes.

Namespace:   System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll)

public:
void EnumerateMetafile(
	Metafile^ metafile,
	array<Point>^ destPoints,
	Rectangle srcRect,
	GraphicsUnit unit,
	Graphics::EnumerateMetafileProc^ callback,
	IntPtr callbackData,
	ImageAttributes^ imageAttr
)

Parameters

metafile
Type: System.Drawing.Imaging::Metafile^

Metafile to enumerate.

destPoints
Type: array<System.Drawing::Point>^

Array of three Point structures that define a parallelogram that determines the size and location of the drawn metafile.

srcRect
Type: System.Drawing::Rectangle

Rectangle structure that specifies the portion of the metafile, relative to its upper-left corner, to draw.

unit
Type: System.Drawing::GraphicsUnit

Member of the GraphicsUnit enumeration that specifies the unit of measure used to determine the portion of the metafile that the rectangle specified by the srcRect parameter contains.

callback
Type: System.Drawing::Graphics::EnumerateMetafileProc^

Graphics::EnumerateMetafileProc delegate that specifies the method to which the metafile records are sent.

callbackData
Type: System::IntPtr

Internal pointer that is required, but ignored. You can pass Zero for this parameter.

imageAttr
Type: System.Drawing.Imaging::ImageAttributes^

ImageAttributes that specifies image attribute information for the drawn image.

This method enumerates the records contained in the specified metafile. Each record is individually sent to a callback method specified by the callback parameter. Typically, the callback method calls the PlayRecord method to "play back", or draw, the record.

If the callback method callsPlayRecord, it must do so by calling the PlayRecord method of the specific Metafile that is being enumerated.

The destPoints parameter specifies three points of a parallelogram. The three Point structures represent the upper-left, upper-right, and lower-left corners of the parallelogram. The fourth point is extrapolated from the first three to form a parallelogram. The drawn metafile is scaled and sheared to fit the parallelogram.

Any drawing that takes place outside of the rectangle specified by the srcRect parameter is ignored.

The image attributes specified by the imageAttr parameter replace those specified when the metafile was written.

.NET Framework
Available since 1.1
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