Delphi OS X子类NSWindow无边框与鼠标事件

问题描述

如何在delphi firemonkey中创建一个派生类的NSWindow？
我成功地创建了一个只包含一个webview的Cocoa窗口。 （使用NSWindow.Wrap，setContentView，orderFront等）
我使它无边界，但问题是它不接受鼠标移动事件，如下所示：

是否可以在delphi中子类化NSWindow并覆盖canBecomeKeyWindow？

它不工作（编译，但方法不调用） p>

  type 
 TMYNSWindow = class（TNSWindow）
 function canBecomeKeyWindow：Boolean; cdecl; 
 end; 
 function TMYNSWindow.canBecomeKeyWindow：Boolean; 
 begin 
结果：= true; 
 end; 
  

`

/ p>

TMYNSWindow = class（TOCGenericImport< NSWindowClass，NSWindow>）
function canBecomeKeyWindow：Boolean; cdecl;
end;


那么，我如何继承NSWindow并覆盖它的一个方法？

编辑

使用Sebastian的解决方案后，
实际上可以创建窗口，

 构造函数TMYNSWindow.Create（contentRect：NSRect; styleMask：NSUInteger; backing：NSBackingStoreType; defer：Boolean）; 
 var 
 V：Pointer; 
 begin 
 inherited创建; 
 V：= NSWindow（Super）.initWithContentRect（contentRect，styleMask，backing，defer）; 
 if GetObjectID<> V然后UpdateObjectID（V）; 
 end; 
 
 
 var 
 MyNSW：TMyNSWindow; 
 NSW：NSWindow; 
 
 ... 
 
 MyNSW：= TMyNSWindow.Create（
 MakeNSRect（0，0，600，400），
 NSBorderlessWindowMask 
 // NSClosableWindowMask或NSMiniaturizableWindowMask或NSResizableWindowMask 
，NSBackingStoreBuffered，false）; 
 
 MyNSW.Super.QueryInterface（StringToGUID（GUID_NSWINDOW），NSW）; // GUID_NSWINDOW ='{8CDBAC20-6E46-4618-A33F-229394B70A6D}'; 
 NSW.setFrame（R，true，true）; // R is NSRect，fill it before ... 
 NSW.orderFront（（TNSApplication.Wrap（TNSApplication.OCClass.sharedApplication）as ILocalObject）.GetObjectID）; 
  

解决方案

以下是从Cocoa类派生的一个简单示例。

 单位Unit2; 
 
接口
 
使用
 MacApi.AppKit，Macapi.ObjectiveC，System.TypInfo; 
 
 type 
 MyNSWindow = interface（NSWindow）
 //按Ctrl + Shift + G在这里插入一个唯一的引用
 function canBecomeKeyWindow：Boolean; cdecl; 
 end; 
 
 TMyNSWindow = class（TOCLocal）
 protected 
 function GetObjectiveCClass：PTypeInfo;覆盖; 
 public 
 function canBecomeKeyWindow：Boolean; cdecl; 
 constructor创建; 
 end; 
 
实现
 
 {TMyNSWindow} 
 
函数TMyNSWindow.canBecomeKeyWindow：Boolean; 
 begin 
结果：= True; 
 end; 
 
构造函数TMyNSWindow.Create; 
 var 
 V：Pointer; 
 begin 
 inherited创建; 
 V：= NSWindow（Super）.init; 
 if GetObjectID<> V then 
 UpdateObjectID（V）; 
 end; 
 
 function TMyNSWindow.GetObjectiveCClass：PTypeInfo; 
 begin 
结果：= TypeInfo（MyNSWindow）; 
 end; 
 
 
 end。 
  

How to create a derived class of NSWindow in delphi firemonkey?I've succeeded in creating a Cocoa window that contains only a webview. (using NSWindow.Wrap, setContentView, orderFront etc)I made it borderless, but the problem is that it does not accept mouse moved events, as described here:Why NSWindow without styleMask:NSTitledWindowMask can not be keyWindow?

Is it possible to subclass NSWindow in delphi and override canBecomeKeyWindow?

It's not working (compiles, but method not called):

type
 TMYNSWindow = class(TNSWindow)
   function canBecomeKeyWindow: Boolean; cdecl;
 end;
 function TMYNSWindow.canBecomeKeyWindow: Boolean;
 begin
   Result := true;
end;

`

This also ineffective:

TMYNSWindow = class(TOCGenericImport<NSWindowClass, NSWindow>) function canBecomeKeyWindow: Boolean; cdecl; end;

So, how can I subclass NSWindow and override one of its method?

EDIT

After using Sebastian's solution,to create the window actually, you can use something like this:

  constructor TMYNSWindow.Create( contentRect: NSRect; styleMask: NSUInteger; backing: NSBackingStoreType; defer: Boolean );
  var
    V : Pointer;
  begin
    inherited Create;
    V := NSWindow(Super).initWithContentRect( contentRect, styleMask, backing, defer );
    if GetObjectID <> V then UpdateObjectID(V);
  end;


var
  MyNSW : TMyNSWindow;
  NSW : NSWindow;

...

  MyNSW := TMyNSWindow.Create(
    MakeNSRect(0, 0, 600, 400),
    NSBorderlessWindowMask
    //NSClosableWindowMask or NSMiniaturizableWindowMask or NSResizableWindowMask
    ,NSBackingStoreBuffered, false );

  MyNSW.Super.QueryInterface( StringToGUID(GUID_NSWINDOW), NSW );   //GUID_NSWINDOW = '{8CDBAC20-6E46-4618-A33F-229394B70A6D}';
  NSW.setFrame( R, true, true );  // R is NSRect, fill it before...
  NSW.orderFront((TNSApplication.Wrap(TNSApplication.OCClass.sharedApplication) as ILocalObject).GetObjectID );

解决方案

Here's a quick example for deriving from a Cocoa class.

unit Unit2;

interface

uses
  MacApi.AppKit, Macapi.ObjectiveC, System.TypInfo;

type
  MyNSWindow = interface(NSWindow)
    // Press Ctrl+Shift+G to insert a unique guid here
    function canBecomeKeyWindow: Boolean; cdecl;
  end;

  TMyNSWindow = class(TOCLocal)
  protected
    function GetObjectiveCClass: PTypeInfo; override;
  public
    function canBecomeKeyWindow: Boolean; cdecl;
    constructor Create;
  end;

implementation

{ TMyNSWindow }

function TMyNSWindow.canBecomeKeyWindow: Boolean;
begin
  Result := True;
end;

constructor TMyNSWindow.Create;
var
  V: Pointer;
begin
  inherited Create;
  V := NSWindow(Super).init;
  if GetObjectID <> V then
    UpdateObjectID(V);
end;

function TMyNSWindow.GetObjectiveCClass: PTypeInfo;
begin
  Result := TypeInfo(MyNSWindow);
end;


end.

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