For some reason messages.pas declares no message record for this
message
type
TWmMoving = record
Msg: Cardinal;
fwSide: Cardinal;
lpRect: PRect;
Result: Integer;
end;
//
Add a handler to your forms private section:
procedure
WMMoving(var msg: TWMMoving); message WM_MOVING;
//
Implement it as
procedure TFormX.WMMoving(var msg: TWMMoving);
var
r: TRect;
begin
r := Screen.WorkareaRect;
// compare the new form bounds in msg.lpRect^ with r and modify
it if
// necessary
if msg.lprect^.left < r.left then
OffsetRect(msg.lprect^, r.left - msg.lprect^.left, 0);
if msg.lprect^.top < r.top then
OffsetRect(msg.lprect^, 0, r.top - msg.lprect^.top);
if msg.lprect^.right > r.right then
OffsetRect(msg.lprect^, r.right - msg.lprect^.right, 0);
if msg.lprect^.bottom > r.bottom then
OffsetRect(msg.lprect^, 0, r.bottom - msg.lprect^.bottom);
inherited;
end;
Взято
с сайта http://www.swissdelphicenter.ch/en/tipsindex.php