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> I've been trying to track down a recently discovered bug in
> one of my Blackbox programs. So far, it appears to be a bug
> introduced into the Blackbox framework at v1.5. When I
> minimize ne of my windows in a particular application, I get
> a trap.
Following up on my previous message about a possible bug introduced
in Blackbox 1.5, I see that I only enounter this problem if I create
a new view with a ResizePref of horFitToWin=TRUE / verFitToWin=TRUE.
Here is a short demonstration case:
**************************************************************
MODULE PrivTest;
IMPORT Views, Log, StdCmds, Properties;
TYPE
View = POINTER TO RECORD( Views.View ) END;
PROCEDURE ( v: View ) Restore*( f: Views.Frame; l, t, r, b: INTEGER );
BEGIN
Log.String( "r = " ); Log.Int( r );
Log.String( ", b = " ); Log.Int( b );
Log.Ln;
END Restore;
PROCEDURE ( v: View ) HandlePropMsg( VAR msg: Properties.Message );
BEGIN
WITH msg: Properties.ResizePref DO
msg.horFitToWin := TRUE;
msg.verFitToWin := TRUE
ELSE
END
END HandlePropMsg;
PROCEDURE Do*;
VAR v: View;
BEGIN
NEW(v);
Views.Deposit( v );
StdCmds.Open;
END Do;
END PrivTest.
**************************************************************
To run the demonstration case, execute PrivTest.Do, then
minimize the newly-opened window.
In Blackbox 1.4, the following appears in the log:
r = 6130925, b = 4016375
r = 6130925, b = 4016375
r = 1397000, b = 101600
In Blackbox 1.5, the following appears in the log:
r = 6130925, b = 3863975
r = 6130925, b = 3863975
r = 2147347123, b = 2147347123
Those huge values in the Blackbox 1.5 log are what's causing
my programs to crash when the window is minimized.
I'd say that this is a bug in Blackbox 1.5...
Marc
--- BlackBox
--- send subject HELP or UNSUBSCRIBE to blackbox{([at]})nowhere.xy
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Received on Thu Dec 14 2006 - 22:53:04 UTC