ddlGetMemoByTxtPtr()
Prototype:
void ddlGetMemoByTxtPtr(
CONTROL *ctl,
WtChar8 *OptnStr,
WtChar8 *ArgList, /* command argument list */
WtChar8 *TxtPtr, /* Text Pointer string */
WtChar8 *Image, /* destination for memo field image */
WtInt32 ImageMax) /* size of Image memory block */
/* ImageMax must be >= 512 */
/* ImageMax must be a multiple of 512 */
/* For most efficient operation, ... */
/* ImageMax should be >= anticipated block size + 512 */
Permitted values in OptnStr:
B - Read BLOB data
The format of 'ArgList' is:
<table-name> <column-name>
where <table-name> is the ascii name of the desired table
in the data base.
<column-name> is the name of the desired Memo field
Description of Parameter TxtPtr:
WtChar8 *TxtPtr is a pointer to the contents of the <column-name> field.
Description:
Read a memo field from an open data base. If the 'B' option is not
present, read an existing MEMO field and return in Image. If the
resulting object length exceeds ImageMax-1, only the first ImageMax-1
characters are returned, followed by the null character.
If the 'B' option is present, read an existing BLOB and return
in Image. If the resulting object length exceeds ImageMax,
only the first ImageMax characters are returned; no null character
is supplied.
Values returned in Control Structure:
ctl->Ans2 is the ImageLength being returned (including terminating zero)
ctl->Ans3 is stored image length (including terminating zero); if ctl->Ans3 > ctl->Ans2, some data
has not been returned
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