My app displays a text message on the screen when it
starts up, depending on whether it is a registered or
a demo version. The text is in a label which I either
show or hide with FrmShowObject or FrmHideObject (plus
I do CtlSetUsable if the ROM version is < 3.2). Text
on one of the labels gets corrupted on all OS versions
I have tested prior to 3.3, but works fine on 3.3 or
better (I don't have a 3.2 ROM).
Is this possibly the result of the prvFixupPointers
bug, or is there something wrong with my code (below)?
If it is due to prvFixupPointers, do you have any
suggestions for work-arounds? (I'm thinking I should
probably just use WinDrawChars instead of labels.)
static void SafeHideObject( FormPtr frmP, UInt16
objectIndex )
{
static UInt32 romVer = 0;
ControlType * cp;
if ( !romVer )
FtrGet( sysFtrCreator, sysFtrNumROMVersion,
&romVer );
if ( romVer < kSysVersion32 )
{
cp = (ControlType *) FrmGetObjectPtr( frmP,
objectIndex );
if ( cp )
CtlSetUsable(cp, false);
}
FrmHideObject(frmP, objectIndex);
}
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