Instead of using IntPtr, we use HandleRef....SafeHandles encapsulate a handle in the form of an IntPtr, but by exposing it as a subclass of the SafeHandle...A sample implementation is: // for IntPtr, IDisposable using System; // for HandleRef, DllImport...UnmanagedResource () { IntPtr h = CreateResource (); _handle = new HandleRef (this...想想Charset:它们允许Ansi和Unicode(根据平台的不同自动表示Ansi和Unicode两种编码格式),但是世界上也会使用其他的编码。
(严格来说,如果有一个以上的WPF高速公路,将会有一个以上的WPF空域,但是为了解释这个概念,假设在本主题给出的例子中只有一个)。...popup弹不出来(未找到原因) 4.某视频软件sdk提供的demo,用window弹出界面show到指定位置,然后实时计算位置,这个方法可以实现,但是因为视频界面最多有十一个视频画面,每个画面有标题和控制面板两个部分...Height, int flags); private IntPtr ChildHandle = IntPtr.Zero; private IntPtr ParentHandle...BuildWindowCore(HandleRef hwndParent) { HandleRef href = new HandleRef(); ... { _window = null; this.Dispose(); } } 主要重写方法BuildWindowCore 和方法
CPU密集型操作:编码解码、图形计算、正则表达式等 IO密集型操作:和硬件打交道,和DB打交道等 线程太多的烦恼/代价: 新开Thread是有开销的(时间、空间) GC回收会冻结所有线程寻找引用根(gcroot...Thread会和网络驱动程序打交道(外网络地址) ThreadPool中的WorkQueue任务(4000+)得不到处理 异步:async/await (3)C#如何使用异步?...SafeHandle:文件句柄、网络句柄......创建IO完成端口 var safehandle = IOCP.CreateIoCompletionPort(new IntPtr(-1), IntPtr.Zero, IntPtr.Zero, 1);...)GCHandle.Alloc("hello world"); IOCP.PostQueuedCompletionStatus(safehandle, 4096, IntPtr.Zero, data)
= CharSet.Auto)] public static extern IntPtr SetParent(HandleRef hWnd, HandleRef hWndParent);...public ViewHost(IntPtr handle) => _handle = handle; protected override HandleRef BuildWindowCore...(HandleRef hwndParent) { SetParent(new HandleRef(null, _handle), hwndParent); return...writer.WriteLine(handle.ToInt32()); } } Dispatcher.Run(); } 5 效果 参考资料和备注...示例源码 win32 和 WPF 混合开发,不可避免会涉及空域问题。
hProcess, uint processId, SafeHandle hFile, uint dumpType, ref MiniDumpExceptionInformation expParam..., IntPtr userStreamParam, IntPtr callbackParam); // Overload supporting MiniDumpExceptionInformation...hProcess, uint processId, SafeHandle hFile, uint dumpType, IntPtr expParam, IntPtr userStreamParam,...= true)] static extern uint GetCurrentThreadId(); static bool Write(SafeHandle fileHandle...ref exp, IntPtr.Zero, IntPtr.Zero); } static bool Write(SafeHandle fileHandle, Option
FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string className, string windowName);...[DllImport("user32.dll")] static extern bool GetWindowRect(HandleRef hwnd, out WindowRect...SetParent(IntPtr hWndChild, IntPtr hWndNewParent); public MainWindow() {..., "TrayNotifyWnd", null); IntPtr trayclock = FindWindowEx(tray, IntPtr.Zero, "TrayClockWClass...", null); WindowRect rect; GetWindowRect(new HandleRef(Application.Current.MainWindow
IntPtr pBitmapBits = IntPtr.Zero; _hBitmap = UnsafeNativeMethods.CreateDIBSection(new HandleRef...WS_EX_TOOLWINDOW 样式 HandleRef nullHandle = new HandleRef(null, IntPtr.Zero);...window IntPtr hScreenDC = UnsafeNativeMethods.GetDC(new HandleRef()); IntPtr...memDC = UnsafeNativeMethods.CreateCompatibleDC(new HandleRef(null, hScreenDC)); IntPtr hOldBitmap...(null, memDC), hOldBitmap); UnsafeNativeMethods.ReleaseDC(new HandleRef(), new HandleRef(
[ResourceExposure(ResourceScope.None)] public static extern bool EnumDisplayMonitors(HandleRef...(IntPtr monitor, IntPtr hdc, IntPtr lprcMonitor, IntPtr lParam); [StructLayout(LayoutKind.Sequential...public int right; public int bottom; } public static readonly HandleRef...NullHandleRef = new HandleRef(null, IntPtr.Zero); /// /// 获取缩放比例...ScalingRatio}%"); colorWin.Top = point.Y / ScalingRatio+4; colorWin.Left = point.X / ScalingRatio+4; 这种作用和下面是一样的
AMSI 为您的最终用户及其数据、应用程序和工作负载提供增强的恶意软件保护。AMSI 与反恶意软件供应商无关;它旨在支持当今可以集成到应用程序中的反恶意软件产品提供的最常见的恶意软件扫描和保护技术。...它支持允许文件和内存或流扫描、内容源 URL/IP 信誉检查和其他技术的调用结构。AMSI 还支持会话的概念,以便反恶意软件供应商可以关联不同的扫描请求。...)•Windows 脚本宿主(wscript.exe 和 cscript.exe)•JavaScript 和 VBScript•Office VBA 宏 既然本质上是一个dll,那么就可以看下他的导出函数...while ($true) { [IntPtr]$address = [IntPtr]::Add($address, 1) If ([System.Runtime.InteropServices.Marshal...$HandleRef = New-Object System.Runtime.InteropServices.HandleRef($tmpPtr, $Kern32Handle) # Return
在我所研究过的图像格式中,只有JPG和PSD两种格式可能内嵌了图像自身的缩略图信息。 在.net中,图像处理方面的内容主要是借助于GDI+的平板化API函数实现的。...callbackData) { IntPtr zero = IntPtr.Zero; int status = SafeNativeMethods.Gdip.GdipGetImageThumbnail...(new HandleRef(this, this.nativeImage), thumbWidth, thumbHeight, out zero, callback, callbackData);...下面我们主要通过实验说说这个函数的实质和其可应用的场合以及不应该应用的场合。 ...为了进一步验证这一点,我生成了一副缩略图和原图完全不配套的JPG图像,来验证这一点,可从此处下载: 处理结果如下图: ?
System.Runtime.InteropServices.HandleRef((New-Object IntPtr), ($var_unsafe_native_methods.GetMethod('...]) ([Void]))) $var_runme.Invoke([IntPtr]::Zero) '@ If ([IntPtr]::size -eq 8) { start-job { param($a...System.Runtime.InteropServices.HandleRef((New-Object IntPtr), ($var_unsafe_native_methods.GetMethod('...]) ([Void]))) $var_runme.Invoke([IntPtr]::Zero) '@ If ([IntPtr]::size -eq 8) { start-job { param($a...', 'string')) return $agpa.Invoke($null, @([System.Runtime.InteropServices.HandleRef](New-Object System.Runtime.InteropServices.HandleRef
也就是下面这段代码中 return new HandleRef(this, IntPtr.Zero) 这句,第二个参数是 0。...1 2 3 4 5 6 7 8 9 10 11 12 13 14 protected override HandleRef BuildWindowCore(HandleRef hwndParent) {...; var source = new HwndSource(parameters); source.RootVisual = new Button(); return new HandleRef
前言 在之前发布的一篇 渗透技巧之Powershell实战思路中,学习了powershell在对抗Anti-Virus的方便和强大。...var_unsafe_native_methods_news.GetMethod('GetProcAddress', [Type[]] @('System.Runtime.InteropServices.HandleRef...', 'string')) return $var_gpa.Invoke($null, @([System.Runtime.InteropServices.HandleRef](New-Object...System.Runtime.InteropServices.HandleRef((New-Object IntPtr), ($var_unsafe_native_methods_news.GetMethod...], [UInt32], [UInt32], [UInt32]) ([IntPtr]))) $var_buffer = $var_va.Invoke([IntPtr]::Zero, $acode.Length
System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle...System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle...System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle...System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle...System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle
之前的调用方法我们一般称为托管 调用 非托管,关于一些名词的解释请自行百度,这里不再过多解释。除了之前的方法还有一种就是调用UnmanagedFunctionPointer以获得自定义调用约定。...hProcess, uint ProcessId, SafeHandle hFile, int DumpType, IntPtr ExceptionParam, IntPtr UserStreamParam...(AddressOfFunction, typeof(DMyUserCallFunction)); 那我们这里便是: IntPtr createPtr = GetProcAddress(LoadLibrary...import Win32API [DllImport("kernel32.dll", SetLastError = true)] public static extern IntPtr...string dll); [DllImport("kernel32.dll", SetLastError = true)] public static extern IntPtr
默认 .NET Core 版本的 WPF 会带一个文本框和一个按钮。我们现在就用这两个按钮来显示 Mouse.GetPosition 获取到的值。...1 2 [DllImport("user32.dll")] static extern bool ClientToScreen(IntPtr hWnd, ref Point lpPoint); 此方法需要使用到一个窗口句柄参数...presentationSource as HwndSource; if(inputSource == null) { return pointClient; } HandleRef...handleRef = new HandleRef(inputSource, inputSource.CriticalHandle); NativeMethods.POINT ptClient...FromPoint(pointClient); NativeMethods.POINT ptClientRTLAdjusted = AdjustForRightToLeft(ptClient, handleRef
窗口过程里面当然是程序员提供的窗体数据更新代码和其它代码。...在调用者对象和UI对象同属一个线程的时候这个属性返回false。在后面的代码分析中我们可以看到,Control类对这一属性的实现就是在判断调用者和控件是否属于同一个线程的。...); } else { //终于找到你了,PostMessage UnsafeNativeMethods.PostMessage(new HandleRef...(this, this.Handle), threadCallbackMessage, IntPtr.Zero, IntPtr.Zero); } if (!...关于其它的代码这里不作进一步解释。
SendMessage internal IntPtr SendMessage(int msg, int wparam, int lparam) { return UnsafeNativeMethods.SendMessage...(new HandleRef((object) this, this.Handle), msg, wparam, lparam); } 调了一个静态方法继续进去 [DllImport("...user32.dll", CharSet = CharSet.Auto)] public static IntPtr SendMessage(HandleRef hWnd, int msg, int...CancelEventArgs) e1); this.OnFormClosing(e1); } if (m.Msg == 17) m.Result = (IntPtr...: 1); if (this.Modal) return; } else e1.Cancel = m.WParam == IntPtr.Zero
_hIcon = IntPtr.Zero; private ImageSource _icon; private IntPtr _iconHandle; private..., IntPtr.Zero, IntPtr.Zero, IntPtr.Zero); return true; } /// ...) { var processPath = Kernel32Interop.GetModuleFileName(new HandleRef...bmiHeader_biCompression = 0 }; colorBitmap = Gdi32Interop.CreateDIBSection(new HandleRef... WndProc_CallBack(IntPtr hwnd, WM msg, IntPtr wParam, IntPtr lParam) { //这是窗口相关的消息
和托管中间封装,包括提供了 UI Element 和 Visual 这些类,在显示模块包含视觉树和显示指令,也就是刚才说的 OnRender 重写方法。...UnsafeNativeMethods.GetWindowLongPtr(new HandleRef((object) this, hwnd), -4); this.HookWindowProc...; _hwndHandleRef = new HandleRef(null,_hwndAttached); _bond = Bond.Attached;...CriticalSetWindowLong(HandleRef hWnd, int nIndex, NativeMethods.WndProc dwNewLong) {...internal IntPtr SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) {