获取顶部窗口句柄（按Z索引排序窗口）

Question

我想写一个方法，它需要窗口句柄列表并返回具有最高z指数的窗口的句柄等。但徒劳无益。有人可以给我一个建议如何做到这一点？

Answer 1

我会帮你出：

[DllImport("user32.dll", SetLastError = true)] 
static extern IntPtr GetWindow(IntPtr hWnd, GetWindow_Cmd uCmd); 

enum GetWindow_Cmd : uint 
{ 
    GW_HWNDFIRST = 0, 
    GW_HWNDLAST = 1, 
    GW_HWNDNEXT = 2, 
    GW_HWNDPREV = 3, 
    GW_OWNER = 4, 
    GW_CHILD = 5, 
    GW_ENABLEDPOPUP = 6 
} 

private IntPtr GetTopmostHwnd(List<IntPtr> hwnds) 
{ 
    var topmostHwnd = IntPtr.Zero; 

    if (hwnds != null && hwnds.Count > 0) 
    { 
     var hwnd = hwnds[0]; 

     while (hwnd != IntPtr.Zero) 
     { 
      if (hwnds.Contains(hwnd)) 
      { 
       topmostHwnd = hwnd; 
      } 

      hwnd = GetWindow(hwnd, GetWindow_Cmd.GW_HWNDPREV); 
     } 
    } 

    return topmostHwnd; 
}