QMacNativeWidget Class

The QMacNativeWidget class provides a widget for Mac OS X that provides a way to put Qt widgets into Carbon or Cocoa hierarchies depending on how Qt was configured. 更多...

头：	#include <QMacNativeWidget>
Since:	Qt 4.5
继承：	QWidget

所有成员列表，包括继承成员

公共函数

	QMacNativeWidget (void * parentView = 0)
	~QMacNativeWidget ()

重实现公共函数

virtual QSize

sizeHint () const

220 公共函数继承自 QWidget
29 公共函数继承自 QObject
12 公共函数继承自 QPaintDevice

重实现保护函数

virtual bool

event (QEvent * ev )

37 保护函数继承自 QWidget
8 保护函数继承自 QObject
1 保护函数继承自 QPaintDevice

额外继承成员

58 特性继承自 QWidget
1 特性继承自 QObject
19 公共槽继承自 QWidget
1 公共槽继承自 QObject
1 信号继承自 QWidget
1 信号继承自 QObject
4 static public members inherited from QWidget
7 静态公共成员继承自 QObject
37 保护函数继承自 QWidget
8 保护函数继承自 QObject
1 保护函数继承自 QPaintDevice
1 保护槽继承自 QWidget

详细描述

The QMacNativeWidget class provides a widget for Mac OS X that provides a way to put Qt widgets into Carbon or Cocoa hierarchies depending on how Qt was configured.

On Mac OS X, there is a difference between a window and view; normally expressed as widgets in Qt. Qt makes assumptions about its parent-child hierarchy that make it complex to put an arbitrary Qt widget into a hierarchy of "normal" views from Apple frameworks. QMacNativeWidget bridges the gap between views and windows and makes it possible to put a hierarchy of Qt widgets into a non-Qt window or view.

QMacNativeWidget pretends it is a window (i.e. isWindow () will return true), but it cannot be shown on its own. It needs to be put into a window when it is created or later through a native call.

QMacNativeWidget works for either Carbon or Cocoa depending on how Qt was configured. If Qt is using Carbon, QMacNativeWidget will embed into Carbon hierarchies. If Qt is using Cocoa, QMacNativeWidget embeds into Cocoa hierarchies.

Here is an example of putting a QPushButton into a NSWindow:

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    NSWindow *window = [[NSWindow alloc] initWithContentRect:NSMakeRect(200, app.desktop()->height() - 200, 239, 200)
                        styleMask:NSTitledWindowMask | NSClosableWindowMask
                                  | NSMiniaturizableWindowMask | NSResizableWindowMask
                        backing:NSBackingStoreBuffered defer:NO];
    QMacNativeWidget *nativeWidget = new QMacNativeWidget();
    nativeWidget->move(0, 0);
    nativeWidget->setPalette(QPalette(Qt::red));
    nativeWidget->setAutoFillBackground(true);
    QVBoxLayout *layout = new QVBoxLayout();
    QPushButton *pushButton = new QPushButton("An Embedded Qt Button!", nativeWidget);
    pushButton->setAttribute(Qt::WA_LayoutUsesWidgetRect); // Don't use the layout rect calculated from QMacStyle.
    layout->addWidget(pushButton);
    nativeWidget->setLayout(layout);
    // Adjust Cocoa layouts
    NSView *nativeWidgetView = reinterpret_cast<NSView *>(nativeWidget->winId());
    NSView *contentView = [window contentView];
    [contentView setAutoresizesSubviews:YES];
    [nativeWidgetView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
    [nativeWidgetView setAutoresizesSubviews:YES];
    NSView *pushButtonView = reinterpret_cast<NSView *>(pushButton->winId());
    [pushButtonView setAutoresizingMask:NSViewWidthSizable];
    // Add the nativeWidget to the window.
    [contentView addSubview:nativeWidgetView positioned:NSWindowAbove relativeTo:nil];
    nativeWidget->show();
    pushButton->show();
    // Show the window.
    [window makeKeyAndOrderFront:window];
    [pool release];

On Carbon, this would do the equivalent:

    Rect contentRect;
    SetRect(&contentRect, 200, 200, 400, 400);
    HIWindowRef windowRef;
    CreateNewWindow(kDocumentWindowClass, kWindowStandardDocumentAttributes | kWindowCompositingAttribute | kWindowStandardHandlerAttribute | kWindowLiveResizeAttribute, &contentRect, &windowRef);
    HIViewRef contentView = 0;
    GetRootControl(windowRef, &contentView);
    QMacNativeWidget *nativeWidget = new QMacNativeWidget();
    nativeWidget->move(0, 0);
    nativeWidget->setPalette(QPalette(Qt::red));
    nativeWidget->setAutoFillBackground(true);
    QVBoxLayout *layout = new QVBoxLayout();
    QPushButton *pushButton = new QPushButton("An Embedded Qt Button!", nativeWidget);
    pushButton->setAttribute(Qt::WA_LayoutUsesWidgetRect); // Don't use the layout rect calculated from QMacStyle.
    layout->addWidget(pushButton);
    nativeWidget->setLayout(layout);
    HIViewRef nativeWidgetView = reinterpret_cast<HIViewRef>(nativeWidget->winId());
    // Add the nativeWidget to the window.
    HIViewAddSubview(contentView, nativeWidgetView);
    // Adjust Carbon layouts
    HILayoutInfo layoutInfo;
    layoutInfo.version = kHILayoutInfoVersionZero;
    HIViewGetLayoutInfo(nativeWidgetView, &layoutInfo);
    layoutInfo.binding.top.toView = contentView;
    layoutInfo.binding.top.kind = kHILayoutBindTop;
    layoutInfo.binding.left.toView = contentView;
    layoutInfo.binding.left.kind = kHILayoutBindLeft;
    layoutInfo.binding.right.toView = contentView;
    layoutInfo.binding.right.kind = kHILayoutBindRight;
    layoutInfo.binding.bottom.toView = contentView;
    layoutInfo.binding.bottom.kind = kHILayoutBindBottom;
    HIViewSetLayoutInfo(nativeWidgetView, &layoutInfo);
    HIViewApplyLayout(nativeWidgetView);
    pushButton->show();
    nativeWidget->show();
    // Show the window.
    ShowWindow(windowRef);

注意， QMacNativeWidget requires knowledge of Carbon or Cocoa. All it does is get the Qt hierarchy into a window not owned by Qt. It is then up to the programmer to ensure it is placed correctly in the window and responds correctly to events.

成员函数文档编制

QMacNativeWidget:: QMacNativeWidget ( void * parentView = 0)

创建 QMacNativeWidget with parentView as its "superview" (i.e., parent). The parentView is either an HIViewRef if Qt is using Carbon or a NSView pointer if Qt is using Cocoa.

QMacNativeWidget:: ~QMacNativeWidget ()

Destroy the QMacNativeWidget .

`[virtual protected]` bool QMacNativeWidget:: event ( QEvent * ev )

重实现自 QObject::event ().

`[虚拟]` QSize QMacNativeWidget:: sizeHint () const

重实现自 QWidget::sizeHint ().

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