控制C#Win32的句柄 [英] Handle To Control c# win32

问题描述

嗨

我正在一个项目中尝试在另一个应用程序中获取控件的句柄.但是我不太了解 System.Windows.Forms.Control.FromChildHandle(handle)函数.我正在做的是获取主窗体的句柄，并希望将所有子句柄放入控件中.

我一直在网上寻找示例，但没有找到任何示例，msdn也未提供示例.

我的代码实际上可以编译，但是 System.Windows.Forms.Control.FromChildHandle 函数不会返回控件.

谢谢您.

Hi

I am working on a project in which I am trying to get the handle of a control in another application. However I don''t understand too well the System.Windows.Forms.Control.FromChildHandle(handle) function. What I''m doing is getting the handle of the main form and want to get all the childhandles into controls.

I have been looking online for examples but haven''t found any and the msdn doesn''t provide examples.

My code actually compiles, but the System.Windows.Forms.Control.FromChildHandle function does not return a control.

thank you

推荐答案

^ ]
根据文档Control.FromChildHandle在父链上移动 up 并返回具有给定句柄的控件，如果找不到，则为null.

我正在尝试在另一个应用程序中获取控件的句柄
你必须研究
EnumWindows [ FindWindow [ FindWindowEx [ UIAutomation [

Control.FromChildHandle Method - MSDN entry[^]
According to the documentation Control.FromChildHandle walks up the parent chain and returns the control with the given handle, null if not found.

I am trying to get the handle of a control in another application
you have to look into
EnumWindows[^]
FindWindow[^]
FindWindowEx[^]
Or
UIAutomation[^]

In short you won''t be able to get a Form and any kind of Control object which represents a form/control in another application. Thus Control.FromChildHandle returns null when you give it a handle that doesn''t belong to the current application.

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