Custom graphics

CCanvas

CCanvas is a class for simplified creation of custom images.

Description

CCanvas provides creation of a graphical resource (with or without binding to a chart object) and drawing graphic primitives.

Declaration

class CCanvas

Title

#include <Canvas\Canvas.mqh>

Inheritance hierarchy

CCanvas

Direct descendants

CChartCanvas, CFlameCanvas

Class methods by groups

Creating
Attach	Attaches the OBJ_BITMAP_LABEL object to an instance of the CCanvas class
Create	Creates a graphical resource without binding to a chart object
CreateBitmap	Create a graphical resource bound to a chart object
CreateBitmapLabel	Create a graphical resource bound to a chart object
Destroy	Destroys a graphical resource
Properties
ChartObjectName	Gets the name of a bound chart object
ResourceName	Gets the name of a graphical resource
Width	Gets the width of a graphical resource
Height	Gets the height of a graphical resource
LineStyleSet	Sets the line style
Updates an object on the screen
Update	Displays changes on the screen
Resize	Resizes a graphical resource
Erasing/Filling with color
Erase	Erases or fills with the specified color
Data access
PixelGet	Gets a color of the dot with the specified coordinates
PixelSet	Sets color of the dot with the specified coordinates
Draws primitives
LineVertical	Draws a vertical line
LineHorizontal	Draws a horizontal line
Line	Draws a freehand line
Polyline	Draws a polyline
Polygon	Draws a polygon
Rectangle	Draws a rectangle
Circle	Draws a circle
Triangle	Draws a triangle
Ellipse	Draws an ellipse
Arc	Draws an ellipse arc
Pie	Draws an ellipse sector
Draws filled primitives
FillRectangle	Draws a filled rectangle
FillCircle	Draws a filled circle
FillTriangle	Draws a filled triangle
FillPolygon	Draws a filled polygon
FillEllipse	Draws a filled ellipse
Fill	Fills an area
Draws primitives with antialiasing
PixelSetAA	Draws a pixel
LineAA	Draws a line
PolylineAA	Draws a polyline
PolygonAA	Draws a polygon
TriangleAA	Draws a triangle
CircleAA	Draws a circle
EllipseAA	Draws an ellipse
LineWu	Draws a line
PolylineWu	Draws a polyline
PolygonWu	Draws a polygon
TriangleWu	Draws a triangle
CircleWu	Draws a circle
EllipseWu	Draws an ellipse
LineThick	Draws a segment of a freehand line having a specified width using antialiasing algorithm.
LineThickVertical	Draws a vertical segment of a freehand line having a specified width using antialiasing algorithm.
LineThickHorizontal	Draws a horizontal segment of a freehand line having a specified width using antialiasing algorithm.
PolygonSmooth	Draws a polygon with a specified width using two antialiasing algorithms
PolygonThick	Draws a polygon with a specified width using antialiasing algorithm
PolylineSmooth	Draws a polyline with a specified width using two antialiasing algorithms
PolylineThick	Draws a polyline with a specified width using antialiasing algorithm
Text
FontSet	Sets font parameters
FontNameSet	Sets font name
FontSizeSet	Sets font size
FontFlagsSet	Sets font flags
FontAngleSet	Sets font slope angle
FontGet	Gets font parameters
FontNameGet	Gets font name
FontSizeGet	Gets font size
FontFlagsGet	Gets font flags
FontAngleGet	Gets font slope angle
TextOut	Displays text
TextWidth	Gets the text width
TextHeight	Gets the text height
TextSize	Gets the text size
Transparency
TransparentLevelSet	Sets transparency level
Input/output
LoadFromFile	Reads an image from a BMP file