虛擬鍵盤一般用在觸控螢幕上，也就是觸控電視和手機平板等，當需要讓使用者輸入的時候就很方便，因此在這記錄一下呼叫虛擬鍵盤的做法，之前在網路上找到並在專案中拿來使用的。
首先是創造一個C#的Script，裡面內容直接如下，可以直接複製貼上：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
public class VirtualKeyboardController : MonoBehaviour {
void Start ()
{
}
void Update ()
{
}
public class VirtualKeyboard
{
[DllImport("user32")]
static extern IntPtr FindWindow(String sClassName, String sAppName);
[DllImport("user32")]
static extern bool PostMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);
private static Process _onScreenKeyboardProcess = null;
//Show the touch keyboard (tabtip.exe).
public void ShowTouchKeyboard()
{
ExternalCall("C:\\Program Files\\Common Files\\Microsoft Shared\\ink\\tabtip.exe", null, false);
//ExternalCall("TABTIP", null, false);
}
//Hide the touch keyboard (tabtip.exe).
public void HideTouchKeyboard()
{
uint WM_SYSCOMMAND = 274;
int SC_CLOSE = 61536;
IntPtr ptr = FindWindow("IPTip_Main_Window", null);
PostMessage(ptr, WM_SYSCOMMAND, SC_CLOSE, 0);
}
//Show the on screen keyboard (osk.exe).
public void ShowOnScreenKeyboard()
{
//ExternalCall("C:\\Windows\\system32\\osk.exe", null, false);
if (_onScreenKeyboardProcess == null || _onScreenKeyboardProcess.HasExited)
_onScreenKeyboardProcess = ExternalCall("OSK", null, false);
}
// Hide the on screen keyboard (osk.exe).
public void HideOnScreenKeyboard()
{
if (_onScreenKeyboardProcess != null && !_onScreenKeyboardProcess.HasExited)
_onScreenKeyboardProcess.Kill();
}
/// <summary>
/// Set size and location of the OSK.exe keyboard, via registry changes. Messy, but only known method.
/// </summary>
/// <param name='rect'>
/// Rect.
/// </param>
public void RepositionOnScreenKeyboard(Rect rect)
{
ExternalCall("REG", @"ADD HKCU\Software\Microsoft\Osk /v WindowLeft /t REG_DWORD /d " + (int)rect.x + " /f", true);
ExternalCall("REG", @"ADD HKCU\Software\Microsoft\Osk /v WindowTop /t REG_DWORD /d " + (int)rect.y + " /f", true);
ExternalCall("REG", @"ADD HKCU\Software\Microsoft\Osk /v WindowWidth /t REG_DWORD /d " + (int)rect.width + " /f", true);
ExternalCall("REG", @"ADD HKCU\Software\Microsoft\Osk /v WindowHeight /t REG_DWORD /d " + (int)rect.height + " /f", true);
}
private static Process ExternalCall(string filename, string arguments, bool hideWindow)
{
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.FileName = filename;
startInfo.Arguments = arguments;
// if just command, we do not want to see the console displayed
if (hideWindow)
{
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardError = true;
startInfo.UseShellExecute = false;
startInfo.CreateNoWindow = true;
}
Process process = new Process();
process.StartInfo = startInfo;
process.Start();
return process;
}
}
}
然後在其他地方來做呼叫或關閉，當然虛擬鍵盤呼叫出來後，也可以直接按鍵盤右上角的X來關閉：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class XXX : MonoBehaviour {
void Start ()
{
VirtualKeyboardController.VirtualKeyboard keyboard = new VirtualKeyboardController.VirtualKeyboard();
keyboard.ShowOnScreenKeyboard();
keyboard.HideOnScreenKeyboard();
}
void Update ()
{
}
}
這樣就可以呼叫和關閉螢幕虛擬鍵盤了，網路上有人說這招在Win 10後就沒辦法叫了，因為Microsoft不再放出虛擬鍵盤的控制權，我自己在Win 10使用是無礙啦......
