如何在屏幕截图上忽略我的应用程序窗口?(斯威夫特 2.0) [英] How to ignore my app's window on screenshot? (Swift 2.0)
问题描述
我想获取屏幕图像,忽略我的应用程序窗口.
I wanted to get an image of the screen, ignoring my app's window.
在 Objective-C 中找到一个代码示例并尝试将其转换为 Swift.
Found a code example in Objective-C and tried to convert it to Swift.
Objective-C 被截断:
Objective-C snipped:
// Get onscreen windows
CGWindowID windowIDToExcude = (CGWindowID)[myNSWindow windowNumber];
CFArrayRef onScreenWindows = CGWindowListCreate(kCGWindowListOptionOnScreenOnly, kCGNullWindowID);
CFMutableArrayRef finalList = CFArrayCreateMutableCopy(NULL, 0, onScreenWindows);
for (long i = CFArrayGetCount(finalList) - 1; i >= 0; i--) {
CGWindowID window = (CGWindowID)(uintptr_t)CFArrayGetValueAtIndex(finalList, i);
if (window == windowIDToExcude)
CFArrayRemoveValueAtIndex(finalList, i);
}
// Get the composite image
CGImageRef ref = CGWindowListCreateImageFromArray(myRectToGrab, finalList, kCGWindowListOptionAll);
我在 Swift 中的版本(到目前为止我已经做到了):
My version in Swift (where I managed to get so far):
// Get onscreen windows
let windowIDToExcude = myNSWindow.windowNumber!
let onScreenWindows = CGWindowListCreate(kCGWindowListOptionOnScreenOnly, kCGNullWindowID)
let finalList = CFArrayCreateMutableCopy(nil, 0, onScreenWindows)
for var i = CFArrayGetCount(finalList) - 1; i >= 0; i-=1 {
var window: CGWindowID = (uintptr_t(CFArrayGetValueAtIndex(finalList, i)) as! CGWindowID)
if window == windowIDToExcude {
CFArrayRemoveValueAtIndex(finalList, i)
}
}
// Get the composite image
var ref = CGWindowListCreateImageFromArray(myRectToGrab, finalList, kCGWindowListOptionAll)
但它在 swift 2.0 中不起作用,我不知道为什么.
But it does not work in swift 2.0 and I have no idea why.
特别是这一行无法编译:
Particularly this line can't be compiled:
CGWindowListCreate(kCGWindowListOptionOnScreenOnly, kCGNullWindowID)
CGWindowListCreate(kCGWindowListOptionOnScreenOnly, kCGNullWindowID)
显然不再有 CGWindowListCreate
、kCGWindowListOptionOnScreenOnly
和 kCGNullWindowID
这样的东西.
Apparently there is no such thing as CGWindowListCreate
, kCGWindowListOptionOnScreenOnly
and kCGNullWindowID
anymore.
推荐答案
你能试试这个吗:
let imageRef = CGWindowListCreateImage(self.view.frame, CGWindowListOption.OptionOnScreenBelowWindow, CGWindowID(self.view.window!.windowNumber), CGWindowImageOption.Default)
let image = NSImage(CGImage: imageRef!, size: self.view.frame.size)
self.imageView.image = image
这对我有用.
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