cscの作法 その276

概要

cscの作法、調べてみた。
練習問題やってみた。

練習問題

RegisterRawInputDevices使ってください。

方針

• マウスとキーボードやる。

サンプルコード

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace App
{
	public partial class Form1 : Form {
		[DllImport("user32.dll")]
		private static extern int RegisterRawInputDevices(RawInputDevice[] devices, int number, int size);
		[DllImport("user32.dll")]
		private static extern int GetRawInputData(IntPtr rawInput, int command, out RawInput data, ref int size, int headerSize);
		private struct RawInputDevice {
			public short UsagePage;
			public short Usage;
			public int Flags;
			public IntPtr Target;
		}
		private struct RawInputHeader {
			public int Type;
			public int Size;
			public IntPtr Device;
			public IntPtr WParam;
		}
		private struct RawInput {
			public RawInputHeader Header;
			public short a;
			public short b;
			public short c;
			public ushort d;
			public ushort e;
			public int f;
			public int g;
			public int h;
		}
		private TextBox textBox1;
		public Form1() {
			textBox1 = new TextBox();
			textBox1.Location = new System.Drawing.Point(30, 30);
			textBox1.Multiline = true;
			textBox1.Size = new System.Drawing.Size(200, 40);
			textBox1.TabIndex = 2;
			Controls.AddRange(new Control[] {
				textBox1
			});
			const int RIDEV_INPUTSINK = 0x00000100;
			int size = Marshal.SizeOf(typeof(RawInputDevice));
			RawInputDevice[] devices = new RawInputDevice[2];
			devices[0].UsagePage = 1;
			devices[0].Usage = 2;
			devices[0].Target = this.Handle;
			devices[0].Flags = RIDEV_INPUTSINK;
			devices[1].UsagePage = 1;
			devices[1].Usage = 6;
			devices[1].Target = this.Handle;
			devices[1].Flags = RIDEV_INPUTSINK;
			RegisterRawInputDevices(devices, 2, size);
		}
		private void log(string msg) {
			Console.WriteLine(msg);
			textBox1.Text = msg;
		}
		protected override void WndProc(ref Message m) {
			const int WmInput = 0xFF;
			if (m.Msg == WmInput)
			{
				const int RidInput = 0x10000003;
				int headerSize = Marshal.SizeOf(typeof(RawInputHeader));
				int size = Marshal.SizeOf(typeof(RawInput));
				RawInput input;
				GetRawInputData(m.LParam, RidInput, out input, ref size, headerSize);
				string str = "";
				if (input.Header.Type == 0)
				{
					short ButtonData = input.c;
					sbyte delta = (sbyte) (input.d);
					int LastX = input.f;
					int LastY = input.g;
					str = string.Format("{0},{1},{2},{3},{4},{5}\r\n", "Mouse", input.Header.Device, LastX, LastY, ButtonData, delta);
					log(str);
				}
				else if (input.Header.Type == 1)
				{
					string message = "";
					ushort VKey = input.d;
					if (input.e == 256)
					{
						message = "KeyDown";
					}
					else if (input.e == 257)
					{
						message = "KeyUp";
					}
					str = string.Format("{0},{1},{2}\r\n", message, input.Header.Device, VKey);
					log(str);
				}
			}
			base.WndProc(ref m);
		}
		[STAThread]
		public static void Main() {
			Application.Run(new Form1());
		}
	}
}

以上。