[C#] 獲取視窗資訊

whitefox

1. public static WindowInfo GetWindowDetail(IntPtr hWnd)
   
2. {
   
3.     // 視窗類別名
   
4.     var lpString = new StringBuilder(512);
   
5.     User32.GetClassName(hWnd, lpString, lpString.Capacity);
   
6.     var className = lpString.ToString();
   
7. 
   
8.     // 視窗標題
   
9.     var lptrString = new StringBuilder(512);
   
10.     User32.GetWindowText(hWnd, lptrString, lptrString.Capacity);
    
11.     var title = lptrString.ToString().Trim();
    
12. 
    
13.     // 視窗可視性
    
14.     var isVisible = User32.IsWindowVisible(hWnd);
    
15. 
    
16.     // 視窗位置與大小
    
17.     User32.LPRECT rect = default;
    
18.     User32.GetWindowRect(hWnd, ref rect);
    
19.     var bounds = new Rect(rect.Left, rect.Top, rect.Right - rect.Left, rect.Bottom - rect.Top);
    
20. 
    
21.     // 視窗所在進程資訊
    
22.     var processInfo = ProcessInfosByHwnd.GetInfo(hWnd);
    
23.     return new WindowInfo(hWnd, className, title, isVisible, bounds, processInfo);
    
24. }

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User32函數

1. public static class User32
   
2. {
   
3.     [DllImport("user32.dll", SetLastError = true)]
   
4.     public static extern IntPtr GetWindow(IntPtr hwnd, uint windowType);
   
5. 
   
6.     public delegate bool WndEnumProc(IntPtr hWnd, int lParam);
   
7.     [DllImport("user32")]
   
8.     public static extern bool Enumwindows(WndEnumProc lpEnumFunc, int lParam);
   
9. 
   
10.     [DllImport("user32")]
    
11.     public static extern IntPtr GetParent(IntPtr hWnd);
    
12. 
    
13.     [DllImport("user32")]
    
14.     public static extern bool IsWindowVisible(IntPtr hWnd);
    
15. 
    
16.     [DllImport("user32")]
    
17.     public static extern int GetWindowText(IntPtr hWnd, StringBuilder lptrString, int nMaxCount);
    
18. 
    
19.     [DllImport("user32")]
    
20.     public static extern int GetClassName(IntPtr hWnd, StringBuilder lpString, int nMaxCount);
    
21. 
    
22.     [DllImport("user32")]
    
23.     public static extern void SwitchToThisWindow(IntPtr hWnd, bool fAltTab);
    
24. 
    
25.     [DllImport("user32")]
    
26.     public static extern bool GetWindowRect(IntPtr hWnd, ref LPRECT rect);
    
27. 
    
28. 
    
29.     [StructLayout(LayoutKind.Sequential)]
    
30.     public readonly struct LPRECT
    
31.     {
    
32.         public readonly int Left;
    
33.         public readonly int Top;
    
34.         public readonly int Right;
    
35.         public readonly int Bottom;
    
36.     }
    
37. }

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