在鼠标下获取窗口值

Question

我正在玩Cocoa/Objective-C,我想问你是否有可能从一个不活动的窗口获取窗口信息,如pid,窗口名称.我的意思是,在有两个非全屏(也没有最大化)的不同任务的窗口A和B的情况下,让我们说Chrome(A)和Firefox(B),活动窗口A和鼠标光标在窗口B上方,我是否可以获得此类信息而无需点击进入窗口B并将其置于前台？

我注意到,例如在非活动窗口中滚动滚动上下文就像它在前景中一样,所以我的猜测是这是可行的.

任何提示都会非常受欢迎.

谢谢

Answer 1

我将回答我自己的问题:可能的辅助功能api和碳a)注册一个广泛的事件:

AXUIElementRef _systemWideElement = AXUIElementCreateSystemWide();

b)将碳转化为筛点

- (CGPoint)carbonScreenPointFromCocoaScreenPoint:(NSPoint)cocoaPoint {
    NSScreen *foundScreen = nil;
    CGPoint thePoint;

    for (NSScreen *screen in [NSScreen screens]) {
        if (NSPointInRect(cocoaPoint, [screen frame])) {
            foundScreen = screen;
        }
    }

    if (foundScreen) {
        CGFloat screenMaxY = NSMaxY([foundScreen frame]);

        thePoint = CGPointMake(cocoaPoint.x, screenMaxY - cocoaPoint.y - 1);
    } else {
        thePoint = CGPointMake(0.0, 0.0);
    }

    return thePoint;
}

c)在鼠标下进行处理

NSPoint cocoaPoint = [NSEvent mouseLocation];
if (!NSEqualPoints(cocoaPoint, _lastMousePoint)) {
    CGPoint pointAsCGPoint = [self carbonScreenPointFromCocoaScreenPoint:cocoaPoint];

    AXUIElementRef newElement = NULL;
    if (AXUIElementCopyElementAtPosition( _systemWideElement, pointAsCGPoint.x, pointAsCGPoint.y, &newElement ) == kAXErrorSuccess) {

        NSLog(@"%@",newElement);

    }
    _lastMousePoint = cocoaPoint;
}

致积于https://developer.apple.com/library/mac/samplecode/UIElementInspector/Introduction/Intro.html

nslog提供类似<AXUIElement 0x6000000583c0> {pid = 39429}的内容

ps aux | grep 39429

:39429   0.2  5.5  5109480 916500   ??  U     1:57PM   3:34.67 /Applications/Xcode.app/Contents/MacOS/Xcode