- pif:[in] Pointer to the IForm interface object.
- propId:[in] Identifies the property whose value is to be set.
- val:[in] The new value for the widget's or form's 'propId' property, expressed as a 32-bit unsigned integer.
int IForm_SetProperty(IForm *pif, uint16 propId, uint32 val);
Not all properties set a stored value in the specified form. Several form properties (FID_TEXT, FID_PROGRESS, etc) are used as triggers to invoke a specific form behavior and do NOT store any retrievable value in the indicated property.