Determines whether the LBarCode object is valid.
L_BOOL LBarCode::IsValid (L_VOID)
|There is a pointer to a valid bitmap object.
|There is not a pointer to a valid bitmap object.
Call this function to determine whether the class object has been associated with a valid LBitmapBase object.
Before using some of the LBarCode functions, a bitmap must be associated with the class object. Until a valid bitmap object is associated with the LBarCode object, this function will return false.
Specifically, barcodes cannot be read or written until a valid bitmap is associated with the LBarCode class object.
For complete sample code, refer to the BarCode demo.
For an example, refer to LBarCode::Write.