考虑以下代码:
module Proxy = struct
type 'a t
end
class qObject proxy = object(self : 'self)
method proxy : 'self Proxy.t = proxy
end
class qWidget proxy = object(self : 'self)
inherit qObject proxy
method add : qWidget -> unit = fun w -> ()
method as_qWidget = (self :>
我有一个linux系统,它有两个监视器输出(1920x1080)。我安排它们的桌面尺寸为1920x2160。现在我想运行一个Qt应用程序,它从全屏模式开始,覆盖1920x2160桌面。我试过:
QWidget::setFullScreen() -> The QWidget is maximized across 1 monitor
QWidget::setGeometry(0,0,1920,2160) -> The QWidget is also maximized across 1 monitor
即使我做了:
QWidget::move(0,0) & QWidget::
我想替换QDockWidget*的widget (QWidget*),但是调用会删除以前的widget。如何防止这种删除?
QDockWidget* dw = new QDockWidget;
QWidget* tw1 = new TestWidget;
QWidget* tw2 = new TestWidget;
dw->setWidget(tw1);
dw->setWidget(tw2); // tw1 deleted here
delete dw;
// I want to use tw1 here, but it died
TestWidget只是一个检查删除时刻的测试: