I didn't get any answers to my previous question
("corrupted labels"), so I replaced the labels with
WinDrawChars/WinEraseChars as needed. However, I
still have a problem showing/hiding other objects.
My form contains:
1. a form bitmap
2. a Gadget (bounds determine where to draw chars)
3. another Gadget (ditto)
4. a Button
I am using the code below to show or hide the bitmap
and the button. On OS versions < 3.2 (I tested on
2.0, 3.0, 3.1 , 3.3, 3.5, and 4.0), the button gets
corrupted (a sloppy rectangle is displayed at the
wrong location and it doesn't respond to taps). On OS
versions >= 3.3 it works as expected.
Does anyone have any suggestions?
---- code ----
#define kSysVersion32
sysMakeROMVersion(3,2,0,sysROMStageRelease,0)
static void SafeShowObject( 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, true);
}
FrmShowObject( frmP, objectIndex );
}
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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