PlotArea.setBackground2

void setBackground(const char *filename, int align = Center);

Uses the image from the specified file or resource as the background image of the plot area.

Argument	Default	Description
filename	(Mandatory)	The pathname of the image file or resource, which must be of PNG, JPG or GIF format. Please refer to Path Specification on how ChartDirector interprets pathnames.
align	Center	The alignment of the background image relative to the plot area. See Alignment Specification for supported alignment types.

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