This is from Neil Rhodes and Julie McKeehan's book (ISBN1-56592-856-3).
Max
--- Joe Programmer <[EMAIL PROTECTED]> wrote:
> --- Dave Mottorn wrote:
> > Do you thing fields should be avoided
> > in general?
>
> No. Use a label if your text never changes. Or use
> WinDrawChars in similar situations. Use a field when
> you want to let the user enter text.
>
> Here are two useful functions for changing field text
> which have been posted to this forum in the past. You
> may find them helpful.
>
> static FieldPtr SetFieldTextFromHandle( UInt16
> fieldID, MemHandle txtH, FormPtr frmP )
> {
> MemHandle oldTxtH;
> FieldPtr fldP;
>
> // get the field and a handle to its text
> fldP = FrmGetObjectPtr( frmP, FrmGetObjectIndex(
> frmP, fieldID ) );
> ErrNonFatalDisplayIf( !fldP, "missing field" );
> oldTxtH = FldGetTextHandle( fldP );
>
> // set field to new text
> FldSetTextHandle( fldP, txtH );
> FldDrawField( fldP );
>
> // free old MemHandle
> if ( oldTxtH ) MemHandleFree( oldTxtH );
>
> return fldP;
>
> } // SetFieldTextFromHandle
>
>
> static FieldPtr SetFieldTextFromStr( UInt16 fieldID,
> Char *strP, FormPtr frmP )
> {
> MemHandle txtH;
>
> txtH = MemHandleNew( StrLen( strP ) + 1 );
> if ( !txtH )
> return NULL;
> StrCopy( MemHandleLock(txtH), strP );
> MemHandleUnlock( txtH );
> return SetFieldTextFromHandle( fieldID, txtH, frmP
> );
>
> } // SetFieldTextFromStr
>
>
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