Hello Everybody,
Is there any Know or Unknown problem with Memory handling APIs under Palm
OS 3.3?
I have executed the Application with Palm OS 3.1, 3.3 and 3.5
The Problem appears only in Palm OS 3.3
One of the problems is that if I use SetFieldText Function (Symbol SDK),
It doesn't assign the value.
Any Idea?
Thank You
Alejandro Calvo
/***********************************************************************
*
* FUNCTION: SetFieldText
*
* DESCRIPTION:Perform all necessary actions to set a Field control's
* text and redraw, if necesary. Allocates a
text handle.
*
*
* PARAMETERS: nFieldID(in) - The resource ID of the field.
* pSrcText(in) - The text to copy into field.
* nMaxSize(in) - Max size that the field can
grow.
* bRedraw(in) - Should the text be redrawn now?
*
* RETURNED: None
*
***********************************************************************/
void SetFieldText( UInt nFieldID, const CharPtr pSrcText, Int nMaxSize,
Boolean bRedraw )
{
VoidHand hFieldText;
CharPtr pFieldText;
FieldPtr pField;
pField = GetObjectPtr( nFieldID );
if( !pField )
return;
hFieldText = FldGetTextHandle( pField );
if( !hFieldText )
hFieldText = MemHandleNew( nMaxSize );
// If already allocated, make sure it can handle nMaxSize already.
// If not, realloc that buffer
else
{
ULong curSize = MemHandleSize( hFieldText );
if( curSize < nMaxSize )
MemHandleResize(hFieldText, nMaxSize ) ;
}
if( hFieldText )
{
int len = StrLen(pSrcText);
pFieldText = MemHandleLock( hFieldText );
if (len > nMaxSize)
{
StrNCopy( pFieldText, pSrcText, nMaxSize-1);
pFieldText[nMaxSize-1] = '\0';
}
else
StrCopy( pFieldText, pSrcText );
MemHandleUnlock( hFieldText );
FldSetTextHandle( pField, hFieldText );
FldSetTextAllocatedSize( pField, nMaxSize );
FldSetMaxChars( pField, nMaxSize-1);
FldRecalculateField( pField, true );
if( bRedraw )
FldDrawField( pField );
}
}
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