你能得到NativeWindow最小化事件吗

Question

在AIR中使用NativeWindow 's时，每次窗口最小化/非最小化时都可以获得事件吗?我试着与DisplayStateChanged挂钩，但当窗口最小化时，它不会开火。你知道如何举办这样的活动吗?

我用的是32位的Windows 7，运行的是AIR 3.5。

初始化代码:

        var init:NativeWindowInitOptions = new NativeWindowInitOptions();
        init.maximizable = true;
        init.resizable = true;
        init.type = NativeWindowType.NORMAL;
        init.minimizable = true;
        window = new NativeWindow(init);
        window.alwaysInFront = true;
        window.addEventListener(NativeWindowDisplayStateEvent.DISPLAY_STATE_CHANGE, dispChange, false, 0, true);

这是处理程序:

    private function dispChange(e:NativeWindowDisplayStateEvent):void {

        // if minimized / un-minimized
        if (e.beforeDisplayState == NativeWindowDisplayState.NORMAL && e.afterDisplayState == NativeWindowDisplayState.MINIMIZED) {
            trace("MINIMIZED!");
        }else if (e.beforeDisplayState == NativeWindowDisplayState.MINIMIZED && e.afterDisplayState == NativeWindowDisplayState.NORMAL) {
            trace("Un-MINIMIZED!");
        }
    }

Answer 1

以下内容适用于Windows 7 64位，安装AIR 3.3/Flash Player 11.3。

import flash.display.NativeWindowDisplayState;
import flash.events.NativeWindowDisplayStateEvent;
~
stage.nativeWindow.addEventListener(NativeWindowDisplayStateEvent.DISPLAY_STATE_CHANGE, displayStateChangeEventHandler);
~
private function displayStateChangeEventHandler(event:NativeWindowDisplayStateEvent):void
{
    switch (stage.nativeWindow.displayState)
    {
        case NativeWindowDisplayState.MINIMIZED:    trace("window was minimized");
                                                    break;
        case NativeWindowDisplayState.NORMAL:       trace("window is normal");
    }
}

Answer 2

窗口实际上是可最小化的(检查window.minimizable，而不仅仅是init设置)?

我还想知道:

if (e.beforeDisplayState == NativeWindowDisplayState.MINIMIZED) trace("min before");
if (e.afterDisplayState == NativeWindowDisplayState.MINIMIZED) trace("min after");

我还想知道上面的"弱引用"注释的结果。这会影响到垃圾收集，所以最好进行测试。

Answer 3

我能得到的最接近最小化事件的东西是激活事件。每当用户在应用程序外点击时，该窗口就会被停用。然后可以使用minimize()自动最小化窗口。但是，当用户最小化窗口/切换到另一个窗口时，也会调用deactivated事件。当用户切换回来时，你会收到一个激活电话。

window.addEventListener(Event.ACTIVATE, dispActive, false, 0, true);
window.addEventListener(Event.DEACTIVATE, dispDective, false, 0, true);
private function dispActive(e:Event):void {
    // un-minimized
}
private function dispDective(e:Event):void {
    // deactivated .. minimize again to be sure
    window.minimize();
}

Answer 4

我正在获取最小化/取消最小化的事件。我正在构建一个AIR 3.5应用程序。

window = stage.nativeWindow;
window.addEventListener(NativeWindowDisplayStateEvent.DISPLAY_STATE_CHANGE, dispChange, false, 0, true);
function dispChange(e:Event):void {
        minimized = (window.displayState == "minimized");
        if (minimized) {
            trace("minimized!")
        }else {
            trace("UN-minimized!")
        }
    }