如何获得不属于我的应用程序的活动窗口? [英] How to get active window that is not part of my application?

问题描述

如何获取用户当前关注的窗口标题? 我正在制作一个与另一个Window一起运行的程序，如果用户没有将注意力集中在该窗口上，则我的程序没有理由继续更新.

How can I get the Window Title that the user currently have focus on? I'm making a program that runs with another Window, and if the user does not have focus on that window I find no reason for my program to keep updating.

那么如何确定用户关注的窗口?

So how can I determine what window the user have focus on?

我确实尝试研究了

[DllImport("user32.dll")]
static extern IntPtr GetActiveWindow();

但是我似乎只能在Window是我的应用程序的一部分的情况下使用它，而事实并非如此.

but I seems I can only use that if the Window is part of my application which is it not.

推荐答案

检查此代码:

[DllImport("user32.dll")]
static extern IntPtr GetForegroundWindow();


[DllImport("user32.dll")]
static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);

private string GetActiveWindowTitle()
{
    const int nChars = 256;
    StringBuilder Buff = new StringBuilder(nChars);
    IntPtr handle = GetForegroundWindow();

    if (GetWindowText(handle, Buff, nChars) > 0)
    {
     return Buff.ToString();
    }
  return null;
}

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