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  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9. using System.Runtime.InteropServices;
  10.  
  11. namespace test
  12. {
  13.     public partial class Form1 : Form
  14.     {
  15.         public Form1()
  16.         {
  17.             InitializeComponent();
  18.         }
  19.  
  20.         [DllImport("dwmapi.dll", PreserveSig = false)]
  21.         public static extern bool DwmIsCompositionEnabled();
  22.         [DllImport("dwmapi.dll", PreserveSig = false)]
  23.         public static extern void DwmExtendFrameIntoClientArea(IntPtr hWnd, ref MARGINS pMargins);
  24.         [StructLayout(LayoutKind.Sequential)]
  25.         public struct MARGINS
  26.         {
  27.             public int Left;
  28.             public int Right;
  29.             public int Top;
  30.             public int Bottom;
  31.         }        
  32.  
  33.         private void Form1_Load(object sender, EventArgs e)
  34.         {
  35.             // Form上にはlabelやtextboxを適当に配置して
  36.             this.BackColor = Color.Black;
  37.             if (DwmIsCompositionEnabled())
  38.             {
  39.                 MARGINS margin = new MARGINS();
  40.                 margin.Top = -1;
  41.                 margin.Right = 0;
  42.                 margin.Left = 0;
  43.                 margin.Bottom = 0;
  44.                 DwmExtendFrameIntoClientArea(this.Handle, ref margin);
  45.             }
  46.         }
  47.     }
  48. }
  49.  
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https://ideone.com/p1Dxt
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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