The Colour dialog contains a number of boxes showing the colours available on your Windows system, with the currently selected colour highlighted. Clicking on a colour box selects that colour.
The Colours dialog also contains OK and Cancel buttons, both of which close the dialog. If the OK button pushed is the currently selected colour will be used for the item nominated when the dialog was called (i.e. either the foreground colour or the background colour) and the barcode image redrawn, while if Cancel is pushed the current barcode image display remains unchanged.
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