NAME

mtext_put_prop - Set a text property.

SYNOPSIS

int mtext_put_prop (MText * mt, int from, int to, MSymbol key, void * val)

DESCRIPTION

Set a text property.

The mtext_put_prop() function sets a text property to the characters between from (inclusive) and to (exclusive) in M-text mt. key and val specify the key and the value of the text property. With this function,

                     FROM                   TO
M-text: |<------------|-------- MT ---------|------------>|
PROP  :  <------------------ OLD_VAL -------------------->

becomes

                     FROM                   TO
M-text: |<------------|-------- MT ---------|------------>|
PROP  :  <-- OLD_VAL-><-------- VAL -------><-- OLD_VAL-->

RETURN VALUE

If the operation was successful, mtext_put_prop() returns 0. Otherwise it returns -1 and assigns an error code to the external variable merror_code.

ERRORS

MERROR_RANGE, MERROR_SYMBOL

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