首先，我必须通知您，我是Objective-C和Cocoa的新手。
我已经阅读了一些关于这方面的书籍，现在我能够构建非常简单的程序。
我已经停留了15天，我正在尝试构建一个程序而且我真的不知道在哪里看...
我想构建一个程序，可以使用DDC / CI更改我的显示器的亮度，我想显示/隐藏一个窗口（它写入亮度级别），就像Leopard或Snow的Apple亮度边框一样豹纹与完全相同的风格。
使用RegisterEventHotKey和各种IO服务功能，当我按下F2时，我已经能够增加亮度，并且当按下F1时，我可以减少亮度。
使用自定义NSWindow（TransparentWindow）和自定义NSView（RoundedView），我已经能够获得一个与Apple亮度边框完全相同的窗口。我已将它放在awakeFromNib上，它显示正确并保持在那里。
我无法实现的目标（而且我真的变得疯狂）是仅在按F1或F2时显示窗口。 （为了隐藏它我已经实现了NSTimer，但现在这已经是offtopic了）
我尝试了不同的方法：
1）在我实现RegisterEventHotKey的NSobject类中，我创建了一个TransparentWindow实例，然后我将orderOut发送给该实例。
2）我使用NSNotificationCenter直接向TransparentWindow类发送通知，并从那里调用orderOut。
3）以及其他许多我现在都不记得了。
我现在要做的是通过在awakeFromNib内创建窗口来显示窗口（这样可行），然后用orderOut隐藏它（这永远不会起作用）。< / p>
这些是涉及的课程：
TransparentWindow.h：
#import <Cocoa/Cocoa.h>
@interface TransparentWindow : NSWindow
{
IBOutlet NSWindow *window;
}
@property (retain) IBOutlet NSWindow *window;
@end
TransparentWindow.m：
#import "TransparentWindow.h"
@implementation TransparentWindow
@synthesize window;
- (id)initWithContentRect:(NSRect)contentRect
styleMask:(unsigned int)aStyle
backing:(NSBackingStoreType)bufferingType
defer:(BOOL)flag {
window = [super initWithContentRect:contentRect
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO];
if (window != nil) {
[window setLevel: NSStatusWindowLevel];
[window setBackgroundColor: [NSColor clearColor]];
[window setAlphaValue:1.0];
[window setOpaque:NO];
[window setHasShadow:NO];
[window setIgnoresMouseEvents: YES];
NSLog(@"%p", window);
}
return window;
}
- (BOOL) canBecomeKeyWindow
{
return YES;
}
- (void)notify {
[[NSNotificationCenter defaultCenter] postNotificationName:@"MyNotification" object:self];
}
- (void)handleNotification:(NSNotification*)note {
[window orderOut:self];
}
@end
RoundedView.h：
#import <Cocoa/Cocoa.h>
@interface RoundedView : NSView
{
}
@end
RoundedView.m：
#import "RoundedView.h"
@implementation RoundedView
- (void)drawRect:(NSRect)rect
{
NSColor *bgColor = [NSColor colorWithCalibratedWhite:0.0 alpha:0.25];
NSRect bgRect = rect;
int minX = NSMinX(bgRect);
int midX = NSMidX(bgRect);
int maxX = NSMaxX(bgRect);
int minY = NSMinY(bgRect);
int midY = NSMidY(bgRect);
int maxY = NSMaxY(bgRect);
float radius = 20.0; // correct value to duplicate Panther's App Switcher
NSBezierPath *bgPath = [NSBezierPath bezierPath];
// Bottom edge and bottom-right curve
[bgPath moveToPoint:NSMakePoint(midX, minY)];
[bgPath appendBezierPathWithArcFromPoint:NSMakePoint(maxX, minY)
toPoint:NSMakePoint(maxX, midY)
radius:radius];
// Right edge and top-right curve
[bgPath appendBezierPathWithArcFromPoint:NSMakePoint(maxX, maxY)
toPoint:NSMakePoint(midX, maxY)
radius:radius];
// Top edge and top-left curve
[bgPath appendBezierPathWithArcFromPoint:NSMakePoint(minX, maxY)
toPoint:NSMakePoint(minX, midY)
radius:radius];
// Left edge and bottom-left curve
[bgPath appendBezierPathWithArcFromPoint:bgRect.origin
toPoint:NSMakePoint(midX, minY)
radius:radius];
[bgPath closePath];
[bgColor set];
[bgPath fill];
}
MainProgram.h：
#import <Cocoa/Cocoa.h>
#import <carbon/carbon.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <IOKit/IOKitLib.h>
#include <ApplicationServices/ApplicationServices.h>
#include <IOKit/i2c/IOI2CInterface.h>
@interface MainProgram : NSObject {
}
@end
MainProgram.m：
#import "MainProgram.h"
#import <Carbon/Carbon.h>
#import "TransparentWindow.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <IOKit/IOKitLib.h>
#include <ApplicationServices/ApplicationServices.h>
#include <IOKit/i2c/IOI2CInterface.h>
static OSStatus OnHotKeyEvent(EventHandlerCallRef nextHandler,EventRef theEvent,void *userData);
extern int level;
@implementation MainProgram
- (void)awakeFromNib
{
EventHotKeyRef gMyHotKeyRef;
EventHotKeyID gMyHotKeyID;
EventTypeSpec eventType;
eventType.eventClass=kEventClassKeyboard;
eventType.eventKind=kEventHotKeyPressed;
InstallApplicationEventHandler(&OnHotKeyEvent, 1, &eventType, NULL, NULL);
gMyHotKeyID.signature='htk1';
gMyHotKeyID.id=1;
//RegisterEventHotKey(122, controlKey, gMyHotKeyID, GetApplicationEventTarget(), 0, &gMyHotKeyRef);
RegisterEventHotKey(122, NULL, gMyHotKeyID, GetApplicationEventTarget(), 0, &gMyHotKeyRef);
gMyHotKeyID.signature='htk2';
gMyHotKeyID.id=2;
RegisterEventHotKey(120, NULL, gMyHotKeyID, GetApplicationEventTarget(), 0, &gMyHotKeyRef);
}
OSStatus OnHotKeyEvent(EventHandlerCallRef nextHandler,EventRef theEvent,
void *userData)
{
EventHotKeyID hkCom;
GetEventParameter(theEvent,kEventParamDirectObject,typeEventHotKeyID,NULL,
sizeof(hkCom),NULL,&hkCom);
int l = hkCom.id;
switch (l) {
case 1:
//NSLog(@"Hotkey 1");
level = level - 5;
if (level<0) {
level = 0;
}
else {
BrightnessMain(level);
}
break;
case 2:
//NSLog(@"Hotkey 2");
level = level + 5;
if (level>100) {
level = 100;
}
else {
BrightnessMain(level);
TransparentWindow *object3 = [[TransparentWindow alloc] init];
//[object3 orderOut:nil];
[[NSNotificationCenter defaultCenter] addObserver:object3 selector:@selector(handleNotification:) name:@"MyNotification" object:nil];
[object3 notify];
}
break;
}
return noErr;
}
@end
错误在哪里？ 我不是专家程序员，但我认为这可能是一个愚蠢的简单错误，但我无法弄清楚..
更新MainProgram.m：
我已经取代了这个
TransparentWindow *object3 = [[TransparentWindow alloc] init];
用这个：
NSRect contentRect;
NSSize contentSize;
contentSize.width = 210;
contentSize.height = 205;
contentRect.origin = NSMakePoint(855, 140);
contentRect.size = contentSize;
TransparentWindow *object3 = [[TransparentWindow alloc] initWithContentRect:contentRect
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO];
我不确定这是不是你的意思..
更正了TransparentWindow.h：
#import <Cocoa/Cocoa.h>
@interface TransparentWindow : NSWindow
{
}
@end
更正了TransparentWindow.m：
#import "TransparentWindow.h"
@implementation TransparentWindow
- (id)initWithContentRect:(NSRect)contentRect
styleMask:(unsigned int)aStyle
backing:(NSBackingStoreType)bufferingType
defer:(BOOL)flag {
self = [super initWithContentRect:contentRect
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO];
if (self != nil) {
[self setLevel: NSStatusWindowLevel];
[self setBackgroundColor: [NSColor clearColor]];
[self setAlphaValue:1.0];
[self setOpaque:NO];
[self setHasShadow:NO];
[self setIgnoresMouseEvents: YES];
NSLog(@"%p", self);
}
return self;
}
- (BOOL) canBecomeKeyWindow
{
return YES;
}
- (void)notify {
[[NSNotificationCenter defaultCenter] postNotificationName:@"MyNotification" object:self];
}
- (void)handleNotification:(NSNotification*)note {
[self orderOut:self];
}
@end
更新2：
如果我使用makeKeyAndOrderFront而不是orderFront，则会发生一个非常奇怪的事实。
在按下F1或F2按钮的前3或4后，没有任何反应，但是当我再次按F1或F2时，仍然没有窗口出现，但我在控制台中收到这些奇怪的错误：
RoundedFloatingPanel[2346] <Warning>: CGSResolveShmemReference : window.RO.dirtyRegion : Reference offset (38464) exceeds bounds (32768) on shmem obj 0x229
RoundedFloatingPanel[2346] <Warning>: CGSResolveShmemReference : window.RO : Reference offset (38144) exceeds bounds (32768) on shmem obj 0x229
RoundedFloatingPanel[2346] <Error>: kCGErrorFailure: CGSNewWindowWithOpaqueShape: Cannot map window information shmem
RoundedFloatingPanel[2346] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
2011-02-17 16:01:42.895 RoundedFloatingPanel[2346:a0f] HIToolbox: ignoring exception 'Error (1000) creating CGSWindow' that raised inside Carbon event dispatch
(
0 CoreFoundation 0x91f186ba __raiseError + 410
1 libobjc.A.dylib 0x999e3509 objc_exception_throw + 56
2 CoreFoundation 0x91f183e8 +[NSException raise:format:arguments:] + 136
3 CoreFoundation 0x91f1835a +[NSException raise:format:] + 58
4 AppKit 0x93408915 _NXCreateWindow + 316
5 AppKit 0x93408720 _NSCreateWindow + 59
6 AppKit 0x93407946 -[NSWindow _commonAwake] + 1784
7 AppKit 0x9340456e -[NSWindow _commonInitFrame:styleMask:backing:defer:] + 1524
8 AppKit 0x934031c1 -[NSWindow _initContent:styleMask:backing:defer:contentView:] + 1568
9 AppKit 0x93402b9b -[NSWindow initWithContentRect:styleMask:backing:defer:] + 71
10 RoundedFloatingPanel 0x000029a6 -[TransparentWindow initWithContentRect:styleMask:backing:defer:] + 119
11 RoundedFloatingPanel 0x000031ec OnHotKeyEvent + 447
12 HIToolbox 0x95ff0ecf _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 1567
13 HIToolbox 0x95ff0196 _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec + 411
14 HIToolbox 0x95fefff5 SendEventToEventTargetWithOptions + 58
15 HIToolbox 0x96024c18 _ZL29ToolboxEventDispatcherHandlerP25OpaqueEventHandlerCallRefP14OpaqueEventRefPv + 3006
16 HIToolbox 0x95ff1320 _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 2672
17 HIToolbox 0x95ff0196 _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec + 411
18 HIToolbox 0x96012a07 SendEventToEventTarget + 52
19 AppKit 0x93460c3e -[NSApplication sendEvent:] + 7494
20 AppKit 0x933f42a7 -[NSApplication run] + 917
21 AppKit 0x933ec2d9 NSApplicationMain + 574
22 RoundedFloatingPanel 0x00002368 main + 30
23 RoundedFloatingPanel 0x0000231e start + 54
24 ??? 0x00000001 0x0 + 1
答案 0 :(得分：2)
首先，
TransparentWindow *object3 = [[TransparentWindow alloc] init];
未调用您在
中定义的初始值设定项 @implementation TransparentWindow
- (id)initWithContentRect:(NSRect)contentRect
styleMask:(unsigned int)aStyle
backing:(NSBackingStoreType)
defer:(BOOL)flag { ...
相反，请致电
TransparentWindow *object3 = [[TransparentWindow alloc] initWithContentRect: ...
styleMask: ...
backing: ... defer: ...];
使用适当的参数，以便您调用您定义的内容！
接下来，不要合成属性window。您的TransparentWindow 是NSWindow，因为它是一个子类，因此您无需在其中创建NSWindow*window。您似乎在window内混合self和TransparentWindow，这非常糟糕。
删除属性和ivar window，并将window内的所有TransparentWindow替换为self。
例如，init...方法应该看起来像
self = [super initWithContentRect:contentRect
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO];
if (self != nil) { ...
现在，请告诉我这些变化之后的情况如何！我不确定它们是否足够，但这些都是最明显的问题。