Type: double
Default: 40.0 mm
Sets the required target width of barcode image (in units determined by the setting of the Units property).
Note: this value is ignored if a non-zero value is provided from the Xunit property and the barcode image width is calculated from the number of bars and the value of the Xunit property.
Also see the effect of using a non-zero value of pixeladjust in the drawBarcode() method.
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