Installing Your Validation Functions
To install your own validation function for a data field, memo field, or field in a scrollable region, call:
void (fldval_fp, memo_or_fldp)
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int (*fldval_fp)();
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/* Your field validation function
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*/
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FIELDPTR memo_or_fldp;
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/* Pointer to field to install function
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*/
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To install your own validation function for a form, call:
void (fmval_fp, dfmp)
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int (*fmval_fp)();
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/* Your form validation function
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*/
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DFORMPTR dfmp;
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/* Pointer to form to install function
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*/
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