在 C# 中获取窗口句柄
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Getting the handle of window in C#
提问by Adi
I have the following class declared:
我声明了以下课程：
public partial class MainWindow : Window
And I need to get the actual handle of the window once the window has one. How can I do that and where should I put the query function.
一旦窗口有一个，我需要获得窗口的实际句柄。我该怎么做，我应该把查询功能放在哪里。
What I tried so far was:
到目前为止我尝试过的是：
IntPtr hwnd = new WindowInteropHelper(this).Handle;
But the handle I get back is 0, which might be because it was planted in OnInitialized - maybe the window is not ready yet at that stage. And, yes - it is connected via WPF, thank you for pointing it out!
但是我返回的句柄是 0，这可能是因为它是在 OnInitialized 中植入的——也许在那个阶段窗口还没有准备好。而且，是的 - 它是通过 WPF 连接的，感谢您指出！
Thanks
谢谢
采纳答案by Stephen Martin
In the OnInitializedmethod the handlehas not yet been created. But you are on the right track. If you put your call in the Loadedevent the handlewill have been created and it should return the correct handle.
在该OnInitialized方法中，尚未创建句柄。但你走在正确的轨道上。如果你把你的调用放在Loaded事件中，句柄将被创建，它应该返回正确的句柄。
回答by Mez
[DllImport("user32.dll", EntryPoint = "FindWindowEx")]
public static extern int FindWindowEx(int hwndParent, int hwndEnfant, int lpClasse, string lpTitre);
int hwnd = FindWindowEx(0, 0, 0, title);//where title is the windowtitle
//verification of the window
if (hwnd == 0)
{
throw new Exception("Window not found");
}
回答by Nir
The earliest place you can get the handle is OnSourceInitialized
最早可以拿到句柄的地方是 OnSourceInitialized
