C#代码实现windows触摸屏禁用和启用
时间: 2024-09-07 22:02:18 浏览: 16
在Windows上,C#可以利用System.Windows.Forms命名空间下的Control类来间接控制触摸屏功能,但请注意,这需要管理员权限,并且不是所有应用都允许直接操作底层硬件。以下是禁用和启用触摸屏的基本步骤示例:
```csharp
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
// 获取设备ID列表
[DllImport("user32.dll", SetLastError = true)]
private static extern uint GetTouchInputDeviceCount();
[DllImport("user32.dll")]
private static extern bool GetTouchInputInfo(IntPtr hDevice, ref TOUCHINPUT touchInput, uint cbSize);
[StructLayout(LayoutKind.Sequential)]
private struct TOUCHINPUT
{
public uint Size;
public uint Flags;
public IntPtr Hwnd;
public uint X;
public uint Y;
public uint Pressure;
public int ContactId;
}
public void DisableTouchscreen()
{
if (Environment.OSVersion.Version.Major >= 6) // Windows Vista or later
{
uint deviceCount = GetTouchInputDeviceCount();
if (deviceCount > 0)
{
IntPtr deviceData = Marshal.AllocHGlobal((deviceCount * sizeof(TOUCHINPUT)).ToString());
try
{
for (int i = 0; i < deviceCount; i++)
{
var input = new TOUCHINPUT { Size = (uint)Marshal.SizeOf<TOUCHINPUT>() };
GetTouchInputInfo(IntPtr.Zero, ref input, (uint)Marshal.SizeOf<TOUCHINPUT>());
input.Flags = 0x00000002; // disable touch input
Marshal.StructureToPtr(input, deviceData, false);
GetTouchInputInfo(deviceData, ref input, (uint)Marshal.SizeOf<TOUCHINPUT>());
}
}
finally
{
Marshal.FreeHGlobal(deviceData);
}
}
}
}
public void EnableTouchscreen()
{
if (Environment.OSVersion.Version.Major >= 6)
{
uint deviceCount = GetTouchInputDeviceCount();
if (deviceCount > 0)
{
IntPtr deviceData = Marshal.AllocHGlobal((deviceCount * sizeof(TOUCHINPUT)).ToString());
try
{
for (int i = 0; i < deviceCount; i++)
{
var input = new TOUCHINPUT { Size = (uint)Marshal.SizeOf<TOUCHINPUT>() };
GetTouchInputInfo(IntPtr.Zero, ref input, (uint)Marshal.SizeOf<TOUCHINPUT>());
input.Flags = 0x80000000; // enable touch input
Marshal.StructureToPtr(input, deviceData, false);
GetTouchInputInfo(deviceData, ref input, (uint)Marshal.SizeOf<TOUCHINPUT>());
}
}
finally
{
Marshal.FreeHGlobal(deviceData);
}
}
}
}
```
请注意,这些代码片段仅作为演示如何通过API间接操作,实际生产环境中应该谨慎使用,并确保遵守用户隐私和设备管理策略。