On 24/04/07, Glenn Linderman <[EMAIL PROTECTED]> wrote:
$mw->AddCheckbox( -name => "cb", -text => 'click me', -pos => [10, 20], -tabstop => 1, -onClick => sub { return 0; }, );Why does the above program allow the checkbox to be checked and unchecked? Why doesn't the -onClick handler, which returns 0, prevent the box from being checked?
Because the _Click() events are generated by the Button control AFTER it sees a mouse down and up combination. At this point the control has seen a "click" and sends a BTN_CLICK (IIRC) notification to it's parent - it's already done all the other processing. You could achieve what you are trying here by catching the _MouseDown event, and preventing that being delivered to the Button control. You could also achieve what (I think) you are looking for by creating the control with the BS_CHECKBOX style, rather than the default BS_AUTOCHECKBOX. Then the control does not re-drw itself, and you have to tell it how it should look. Regards, Rob.
