TextBox/PasswordBox控件在获取焦点时无法显示虚拟键盘。
有没有好的方法在WPF中实现这个功能？
最终我们想要实现的是：
如果用户在PC上运行应用程序，我们不关心这个功能，也就是说无论用户是否有物理键盘，我们像在PC上运行普通的WPF应用程序一样。
如果用户在Surface Pro上运行，当他点击TextBox时，内置的虚拟键盘会出现，并且应该更加用户友好，例如键盘永远不会覆盖输入元素。
所以，WPF不能轻松设置某些属性来实现此功能吗？在我看来，这个功能应该是WPF内置的，我不明白为什么我找不到实现这个功能的简单方法。
试试这个：
首先检查是否有物理键盘存在：
KeyboardCapabilities keyboardCapabilities = new Windows.Devices.Input.KeyboardCapabilities();
return keyboardCapabilities.KeyboardPresent != 0 ? true : false;
Process.Start(Environment.GetFolderPath(Environment.SpecialFolder.System) + Path.DirectorySeparatorChar + "osk.exe");
osk.exe相关的问题（https://dev59.com/knfZa4cB1Zd3GeqPRGr9），总的来说，我们认为这不是一个好的解决方案，因为我们必须控制很多东西来满足用户友好的设计。 - user1031200InkInputHelper.DisableWPFTabletSupport(); from MainWindow constructor or similarusing System.Windows.Interop;Add to MainWindow_Loaded or similar:
System.Windows.Automation.AutomationElement asForm =
System.Windows.Automation.AutomationElement.FromHandle(new WindowInteropHelper(this).Handle);
InputPanelConfigurationLib.InputPanelConfiguration inputPanelConfig = new InputPanelConfigurationLib.InputPanelConfiguration();
inputPanelConfig.EnableFocusTracking();
using System;
using System.Reflection;
using System.Windows.Input;
namespace ModernWPF.Win8TouchKeyboard.Desktop
{
public static class InkInputHelper
{
public static void DisableWPFTabletSupport()
{
// Get a collection of the tablet devices for this window.
TabletDeviceCollection devices = System.Windows.Input.Tablet.TabletDevices;
if (devices.Count > 0)
{
// Get the Type of InputManager.
Type inputManagerType = typeof(System.Windows.Input.InputManager);
// Call the StylusLogic method on the InputManager.Current instance.
object stylusLogic = inputManagerType.InvokeMember("StylusLogic",
BindingFlags.GetProperty | BindingFlags.Instance | BindingFlags.NonPublic,
null, InputManager.Current, null);
if (stylusLogic != null)
{
// Get the type of the stylusLogic returned from the call to StylusLogic.
Type stylusLogicType = stylusLogic.GetType();
// Loop until there are no more devices to remove.
while (devices.Count > 0)
{
// Remove the first tablet device in the devices collection.
stylusLogicType.InvokeMember("OnTabletRemoved",
BindingFlags.InvokeMethod | BindingFlags.Instance | BindingFlags.NonPublic,
null, stylusLogic, new object[] { (uint)0 });
}
}
}
}
}
}
这应该可以工作。在链接中有更好的信息和可下载的示例。我只是为了档案目的复制粘贴了基础知识。
当针对.Net 4.6.2+时，您不需要做任何事情：
https://riptutorial.com/wpf/example/23104/showing-touch-keyboard-on-windows-8-and-windows-10
TextBox 和 PasswordBox 都表现正常。出于好奇：你试过我提供的上面的示例吗？ - itsho public static class InkInputHelper
{
public static void DisableWPFTabletSupport()
{
// Get a collection of the tablet devices for this window.
TabletDeviceCollection devices = System.Windows.Input.Tablet.TabletDevices;
if (devices.Count > 0)
{
// Get the Type of InputManager.
Type inputManagerType = typeof(System.Windows.Input.InputManager);
// Call the StylusLogic method on the InputManager.Current instance.
object stylusLogic = inputManagerType.InvokeMember("StylusLogic",
BindingFlags.GetProperty | BindingFlags.Instance | BindingFlags.NonPublic,
null, InputManager.Current, null);
if (stylusLogic != null)
{
// Get the type of the stylusLogic returned from the call to StylusLogic.
Type stylusLogicType = stylusLogic.GetType();
// Loop until there are no more devices to remove.
while (devices.Count > 0)
{
// Remove the first tablet device in the devices collection.
stylusLogicType.InvokeMember("OnTabletRemoved",
BindingFlags.InvokeMethod | BindingFlags.Instance | BindingFlags.NonPublic,
null, stylusLogic, new object[] { (uint)0 });
}
}
}
}
}
使用该类来确定是否存在物理键盘，或者有其他更适合您需求的方式。
我使用这个类在任何我想要的地方打开和关闭键盘。
class KeyboardManager
{
public static void LaunchOnScreenKeyboard()
{
var processes = Process.GetProcessesByName("osk").ToArray();
if (processes.Any())
return;
string keyboardManagerPath = "KeyboardExecuter.exe";
Process.Start(keyboardManagerPath);
}
public static void KillOnScreenKeyboard()
{
var processes = Process.GetProcessesByName("osk").ToArray();
foreach (var proc in processes)
{
proc.Kill();
}
}
public static void killTabTip()
{
var processes = Process.GetProcessesByName("TabTip").ToArray();
foreach (var proc in processes)
{
proc.Kill();
}
}
public static void LaunchTabTip()
{
Process.Start("TabTip.exe");
}
}
public int selectedTableNum;
public MainWindow()
{
InitializeComponent();
Loaded += MainWindow_Loaded;
// Disables inking in the WPF application and enables us to track touch events to properly trigger the touch keyboard
InkInputHelper.DisableWPFTabletSupport();
//remove navigationbar
Dispatcher.BeginInvoke(DispatcherPriority.Loaded, new Action(() =>
{
var navWindow = Window.GetWindow(this) as NavigationWindow;
if (navWindow != null) navWindow.ShowsNavigationUI = false;
}));
KeyboardManager.LaunchTabTip();
}
void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
//Windows 8 API to enable touch keyboard to monitor for focus tracking in this WPF application
InputPanelConfiguration cp = new InputPanelConfiguration();
IInputPanelConfiguration icp = cp as IInputPanelConfiguration;
if (icp != null)
icp.EnableFocusTracking();
mainFrame.Content = new LoginPage();
}
//public bool HasTouchInput()
//{
// foreach (TabletDevice tabletDevice in Tablet.TabletDevices)
// {
// //Only detect if it is a touch Screen not how many touches (i.e. Single touch or Multi-touch)
// if (tabletDevice.Type == TabletDeviceType.Touch)
// return true;
// }
// return false;
//}
我包含了注释，因为如果有错误的话，它可能对某些人有用。
输入面板配置：
[Guid("41C81592-514C-48BD-A22E-E6AF638521A6")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IInputPanelConfiguration
{
/// <summary>
/// Enables a client process to opt-in to the focus tracking mechanism for Windows Store apps that controls the invoking and dismissing semantics of the touch keyboard.
/// </summary>
/// <returns>If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.</returns>
int EnableFocusTracking();
}
[ComImport, Guid("2853ADD3-F096-4C63-A78F-7FA3EA837FB7")]
class InputPanelConfiguration
{
}
我希望这能帮助到未来访问此问题的访客。
TextBox时，内置的虚拟键盘可以显示出来，并且应该是用户友好的，例如键盘永远不会覆盖输入元素。 - user1031200