我试图让系统所选文本的范围,我发现这个方法在这里:为什么不从其他类或子类工作?
+ (void) getPosition{
AXUIElementRef systemWideElement = AXUIElementCreateSystemWide();
AXUIElementRef focussedElement = NULL;
AXError error = AXUIElementCopyAttributeValue(systemWideElement, kAXFocusedUIElementAttribute, (CFTypeRef *)&focussedElement);
if (error != kAXErrorSuccess) {
NSLog(@"Could not get focussed element");
} else {
AXValueRef selectedRangeValue = NULL;
AXError getSelectedRangeError = AXUIElementCopyAttributeValue(focussedElement, kAXSelectedTextRangeAttribute, (CFTypeRef *)&selectedRangeValue);
if (getSelectedRangeError == kAXErrorSuccess) {
CFRange selectedRange;
AXValueGetValue(selectedRangeValue, kAXValueCFRangeType, &selectedRange);
AXValueRef selectionBoundsValue = NULL;
AXError getSelectionBoundsError = AXUIElementCopyParameterizedAttributeValue(focussedElement, kAXBoundsForRangeParameterizedAttribute, selectedRangeValue, (CFTypeRef *)&selectionBoundsValue);
CFRelease(selectedRangeValue);
if (getSelectionBoundsError == kAXErrorSuccess) {
CGRect selectionBounds;
AXValueGetValue(selectionBoundsValue, kAXValueCGRectType, &selectionBounds);
NSLog(@"Selection bounds: %@", NSStringFromRect(NSRectFromCGRect(selectionBounds)));
} else {
NSLog(@"Could not get bounds for selected range");
}
if (selectionBoundsValue != NULL) CFRelease(selectionBoundsValue);
} else {
NSLog(@"Could not get selected range");
}
}
if (focussedElement != NULL) CFRelease(focussedElement);
CFRelease(systemWideElement);
}
但是,如果我从别的比appDelegate.m级呼叫如果它总是返回:
Could not get focussed element
我错过了什么设置?
或者是否有其他人知道如何让系统选定文本位置?
我试了你的答案,没有运气,我想检查错误类型,但它重新运行一个负数,如-2356例如 – 2014-09-11 17:40:31
比我试图检查其他变量有什么,但他们都是空的,没有任何信息,如果我检查这里的任何变量:AXUIElementRef systemWideElement = AXUIElementCreateSystemWide(); AXUIElementRef focussedElement = NULL; AXError error = AXUIElementCopyAttributeValue(systemWideElement,kAXFocusedUIElementAttribute,(CFTypeRef *)&focussedElement); – 2014-09-11 17:41:19