TControlCanvas Members

The following tables list the members exposed by TControlCanvas.

	Name	Description
	AssignTo	Copies the properties of an object to a destination object.
	Changed	This is Changed, a member of class TCanvas.
	Changing	This is Changing, a member of class TCanvas.
	CreateHandle	This is CreateHandle, a member of class TControlCanvas.
	DefineProperties	Provides an interface for a method that reads and writes otherwise unpublished data.
	GetOwner	Returns the owner of an object.
	RequiredState	This is RequiredState, a member of class TCanvas.

Public Events

	Name	Description
	OnChange	Occurs when the image has just changed.
	OnChanging	Occurs just before a change is made to the image.

Public Methods

	Name	Description
	AfterConstruction	Responds after the last constructor has executed.
	Arc	Draws an arc on the image along the perimeter of the ellipse bounded by the specified rectangle.
	Assign	Copies the contents of another, similar object.
	BeforeDestruction	Responds before the first destructor executes.
	BrushCopy	Copies a portion of a bitmap onto a rectangle on the canvas, replacing one of the colors of the bitmap with the brush of the canvas.
	Chord	Draws a closed figure represented by the intersection of a line and an ellipse.
	ClassInfo	Returns a pointer to the runtime type information (RTTI) table for the object type.
	ClassName	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
	ClassNameIs	Determines whether an object is of a specific type.
	ClassParent	Returns the type of the immediate ancestor of a class.
	ClassType	Returns the class reference for the object's class.
	CleanupInstance	Performs finalization on long strings, variants, and interface variables within a class.
	CopyRect	Copies part of an image from another canvas into the canvas.
	Create	Creates an instance of TCanvas.
	Create	Constructs an object and initializes its data before the object is first used.
	DefaultHandler	Provides the interface for a method that processes message records.
	Destroy	Destroys an instance of TControlCanvas.
	Dispatch	Calls message-handling methods for the object, based on the contents of the Message parameter.
	Draw	Renders the graphic specified by the Graphic parameter on the canvas at the location given by the coordinates (X, Y).
	DrawFocusRect	Draws a rectangle in the style used to indicate that the object inside the rectangle has focus.
	Ellipse	This is the overview for the Ellipse method overload.
	FieldAddress	Returns the address of a published object field.
	FillRect	Fills the specified rectangle on the canvas using the current brush.
	FloodFill	Fills an area of the canvas using the current brush.
	FrameRect	Draws a rectangle using the Brush of the canvas to draw the border.
	Free	Destroys an object and frees its associated memory, if necessary.
	FreeHandle	Releases the handle to a device context (HDC) used by the control canvas object.
	FreeInstance	Deallocates memory allocated by a previous call to the System::TObject::NewInstance method.
	GetInterface	Retrieves a specified interface.
	GetInterfaceEntry	Returns the entry for a specific interface implemented in a class.
	GetInterfaceTable	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
	GetNamePath	Returns the name of the object as it appears in the Object Inspector.
	HandleAllocated	Indicates whether the TCanvas object has acquired a handle to a device context.
	InheritsFrom	Determines the relationship of two object types.
	InitInstance	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
	InstanceSize	Returns the size in bytes of each instance of the object type.
	LineTo	Draws a line on the canvas from PenPos to the point specified by X and Y, and sets the pen position to (X, Y).
	Lock	Prevents other threads from drawing on the canvas.
	MethodAddress	This is MethodAddress, a member of class TObject.
	MethodName	This is MethodName, a member of class TObject.
	MoveTo	Changes the current drawing position to the point (X,Y).
	NewInstance	Allocates memory for an instance of an object type and returns a pointer to that new instance.
	Pie	Draws a pie-shaped the section of the ellipse bounded by the rectangle (X1, Y1) and (X2, Y2) on the canvas.
	PolyBezier	Draws a set of Bezier curves.
	PolyBezierTo	Draws a set of Bezier curves and updates the value of PenPos.
	Polygon	Draws a series of lines on the canvas connecting the points passed in and closing the shape by drawing a line from the last point to the first point.
	Polyline	Draws a series of lines on the canvas with the current pen, connecting each of the points passed to it in Points.
	Rectangle	This is the overview for the Rectangle method overload.
	Refresh	Deselects the Pen, Brush, and Font from the device context.
	RoundRect	Draws a rectangle with rounded corners on the canvas.
	SafeCallException	Handles exceptions in methods declared using the safecall calling convention.
	StretchDraw	Draws the graphic specified by the Graphic parameter in the rectangle specified by the Rect parameter.
	TextExtent	Returns the width and height, in pixels, of a string rendered in the current font.
	TextHeight	Returns the height, in pixels, of a string rendered in the current font.
	TextOut	Writes a string on the canvas, starting at the point (X,Y), and then updates the PenPos to the end of the string.
	TextRect	This is the overview for the TextRect method overload.
	TextWidth	Returns the width, in pixels, of a string rendered in the current font.
	TryLock	Locks the canvas if it is currently unlocked.
	Unlock	Decreases the LockCount property, allowing other threads to execute when LockCount reaches 0.
	UpdateTextFlags	This is UpdateTextFlags, a member of class TControlCanvas.

Public Properties

	Name	Description
	CanvasOrientation	Determines the orientation of the canvas as left-to-right or right-to-left.
	ClipRect	Read-only property that specifies the boundaries of the clipping rectangle.
	Control	Specifies the control associated with the control canvas object.
	Handle	Specifies the handle for this canvas.
	LockCount	Indicates the number of times the canvas has been locked to prevent interference from other threads.
	PenPos	Specifies the current drawing position of the Pen.
	Pixels	Specifies the color of the pixels within the current ClipRect.
	TextFlags	Specifies how text is written to the canvas.

Published Properties

	Name	Description
	Brush	Determines the color and pattern for filling graphical shapes and backgrounds.
	CopyMode	Specifies how a graphical image is copied onto the canvas.
	Font	Specifies the font to use when writing text on the image.
	Pen	Specifies the kind of pen the canvas uses for drawing lines and outlining shapes.

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