When performing certain functions it is necessary for your program to take full control over error messages. For example, if your program wants to "quietly" check if a floppy drive has a floppy disk in it, you may not want Windows to display a "critical error" if in fact the floppy drive is empty.
You can control which error messages Windows display by using the "SetErrorMode()" Win API function as follows:
var
wOldErrorMode : Word;
begin
{
tell windows to ignore critical
errors and save current error mode
}
wOldErrorMode :=
SetErrorMode(
SEM_FAILCRITICALERRORS );
try
{
code that might generate a
critical error goes here...
}
finally
{
go back to previous error mode
}
SetErrorMode( wOldErrorMode );
end;
end;