func (e *Element) ValueAsString() (string, error) {
args := &textValueParams{MethodId: GET_TEXT_VALUE}
ret := C.HTMLayoutCallBehaviorMethod(e.handle, (*C.METHOD_PARAMS)(unsafe.Pointer(args)))
if ret == HLDOM_OK_NOT_HANDLED {
domPanic(ret, "This type of element does not provide data in this way. Try a <widget>.")
} else if ret != HLDOM_OK {
domPanic(ret, "Could not get text value")
}
if args.Text == nil {
return "", errors.New("Nil string pointer")
}
return utf16ToStringLength(args.Text, int(args.Length)), nil
}
func (e *Element) SetValue(value interface{}) {
switch v := value.(type) {
case string:
args := &textValueParams{
MethodId: SET_TEXT_VALUE,
Text: stringToUtf16Ptr(v),
Length: uint32(len(v)),
}
ret := C.HTMLayoutCallBehaviorMethod(e.handle, (*C.METHOD_PARAMS)(unsafe.Pointer(args)))
if ret == HLDOM_OK_NOT_HANDLED {
domPanic(ret, "This type of element does not accept data in this way. Try a <widget>.")
} else if ret != HLDOM_OK {
domPanic(ret, "Could not set text value")
}
default:
panic("Don't know how to set values of this type")
}
}